* [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
@ 2022-02-10 12:14 ` kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2022-02-10 12:14 UTC (permalink / raw)
To: David Howells; +Cc: llvm, kbuild-all, ceph-devel, Ilya Dryomov, Jeff Layton
tree: https://github.com/ceph/ceph-client.git testing
head: 6dc7235ee916b768b31afa12ab507874bd278573
commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
git remote add ceph-client https://github.com/ceph/ceph-client.git
git fetch --no-tags ceph-client testing
git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
static int ceph_writepages_start(struct address_space
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r6
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $2
or $1, $0, $3
scd $1, $2
beqzc $1, 1b
.set pop
'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
#0 0x000055a535e1f68f Signals.cpp:0:0
#1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
#2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
#3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
#4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
#5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
#6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
#7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
#8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
#9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
#11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
#12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
#13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
#14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
#15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
#16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
#17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
#18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
#19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
#20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
#21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
#23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
#24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
#25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
#26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
#27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
#28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
#29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
#30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
Target: mips64-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-aa845d7a24/bin
clang-15: note: diagnostic msg:
Makefile arch fs include kernel nr_bisected scripts source usr
--
>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
static int ceph_writepages_start(struct address_space
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r6
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $2
or $1, $0, $3
scd $1, $2
beqzc $1, 1b
.set pop
'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
#0 0x0000562358d5368f Signals.cpp:0:0
#1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
#2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
#3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
#4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
#5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
#6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
#7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
#8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
#9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
#11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
#12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
#13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
#14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
#15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
#16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
#17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
#18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
#19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
#20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
#21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
#23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
#24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
#25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
#26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
#27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
#28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
#29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
#30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
Target: mips64-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-aa845d7a24/bin
clang-15: note: diagnostic msg:
Makefile arch fs include kernel nr_bisected scripts source usr
vim +/ceph_writepages_start +788 fs/ceph/addr.c
1d3576fd10f0d7 Sage Weil 2009-10-06 784
1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
1d3576fd10f0d7 Sage Weil 2009-10-06 805
3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
1d3576fd10f0d7 Sage Weil 2009-10-06 809
5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
1d3576fd10f0d7 Sage Weil 2009-10-06 821
8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 823
590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
1d3576fd10f0d7 Sage Weil 2009-10-06 826
1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
fc2744aa12da71 Yan, Zheng 2013-05-31 838
2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
2a2d927e35dd8d Yan, Zheng 2017-09-01 864
2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
1d3576fd10f0d7 Sage Weil 2009-10-06 867
af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
1d3576fd10f0d7 Sage Weil 2009-10-06 876
0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
1d3576fd10f0d7 Sage Weil 2009-10-06 878
1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 892
1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
1d3576fd10f0d7 Sage Weil 2009-10-06 938
1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
1d3576fd10f0d7 Sage Weil 2009-10-06 944
e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
5b64640cf65be4 Yan, Zheng 2016-01-07 955
1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
8c71897be2ddfd Henry C Chang 2011-05-03 963
3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
88486957f9fbf5 Alex Elder 2013-03-14 967
5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
88486957f9fbf5 Alex Elder 2013-03-14 977 }
5b64640cf65be4 Yan, Zheng 2016-01-07 978
5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
5b64640cf65be4 Yan, Zheng 2016-01-07 988
5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
1d3576fd10f0d7 Sage Weil 2009-10-06 993
1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
2baba25019ec56 Yehuda Sadeh 2009-12-18 997
5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
0713e5f24b7deb Yan, Zheng 2017-08-31 1005
0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
0713e5f24b7deb Yan, Zheng 2017-08-31 1008
8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1011
1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
1d3576fd10f0d7 Sage Weil 2009-10-06 1026
1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1034
5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
5b64640cf65be4 Yan, Zheng 2016-01-07 1038
5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1059
5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
5b64640cf65be4 Yan, Zheng 2016-01-07 1062
5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
1702e79734104d Jeff Layton 2021-12-07 1069 /*
1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
1702e79734104d Jeff Layton 2021-12-07 1072 */
5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
1702e79734104d Jeff Layton 2021-12-07 1077
1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
1702e79734104d Jeff Layton 2021-12-07 1080
1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
5b64640cf65be4 Yan, Zheng 2016-01-07 1090
5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1096
5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
5b64640cf65be4 Yan, Zheng 2016-01-07 1103
1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
1d3576fd10f0d7 Sage Weil 2009-10-06 1116
5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
e5975c7c8eb6ae Alex Elder 2013-03-14 1120
5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
e5975c7c8eb6ae Alex Elder 2013-03-14 1122
a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1128
5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
e5975c7c8eb6ae Alex Elder 2013-03-14 1148
fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
1d3576fd10f0d7 Sage Weil 2009-10-06 1153
5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
5b64640cf65be4 Yan, Zheng 2016-01-07 1157
2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
1d3576fd10f0d7 Sage Weil 2009-10-06 1166
1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1172
1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
f275635ee0b664 Yan, Zheng 2017-09-01 1177
f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
f275635ee0b664 Yan, Zheng 2017-09-01 1199
2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1204
1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
1d3576fd10f0d7 Sage Weil 2009-10-06 1207
1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1214
:::::: The code at line 788 was first introduced by commit
:::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
:::::: TO: Sage Weil <sage@newdream.net>
:::::: CC: Sage Weil <sage@newdream.net>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
@ 2022-02-10 12:14 ` kernel test robot
0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2022-02-10 12:14 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 52499 bytes --]
tree: https://github.com/ceph/ceph-client.git testing
head: 6dc7235ee916b768b31afa12ab507874bd278573
commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
git remote add ceph-client https://github.com/ceph/ceph-client.git
git fetch --no-tags ceph-client testing
git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
static int ceph_writepages_start(struct address_space
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r6
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $2
or $1, $0, $3
scd $1, $2
beqzc $1, 1b
.set pop
'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
#0 0x000055a535e1f68f Signals.cpp:0:0
#1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
#2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
#3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
#4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
#5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
#6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
#7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
#8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
#9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
#11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
#12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
#13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
#14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
#15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
#16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
#17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
#18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
#19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
#20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
#21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
#23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
#24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
#25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
#26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
#27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
#28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
#29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
#30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
Target: mips64-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-aa845d7a24/bin
clang-15: note: diagnostic msg:
Makefile arch fs include kernel nr_bisected scripts source usr
--
>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
static int ceph_writepages_start(struct address_space
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r6
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $2
or $1, $0, $3
scd $1, $2
beqzc $1, 1b
.set pop
'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
#0 0x0000562358d5368f Signals.cpp:0:0
#1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
#2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
#3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
#4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
#5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
#6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
#7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
#8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
#9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
#10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
#11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
#12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
#13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
#14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
#15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
#16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
#17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
#18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
#19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
#20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
#21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
#22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
#23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
#24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
#25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
#26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
#27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
#28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
#29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
#30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
Target: mips64-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-aa845d7a24/bin
clang-15: note: diagnostic msg:
Makefile arch fs include kernel nr_bisected scripts source usr
vim +/ceph_writepages_start +788 fs/ceph/addr.c
1d3576fd10f0d7 Sage Weil 2009-10-06 784
1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
1d3576fd10f0d7 Sage Weil 2009-10-06 805
3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
1d3576fd10f0d7 Sage Weil 2009-10-06 809
5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
1d3576fd10f0d7 Sage Weil 2009-10-06 821
8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 823
590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
1d3576fd10f0d7 Sage Weil 2009-10-06 826
1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
fc2744aa12da71 Yan, Zheng 2013-05-31 838
2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
2a2d927e35dd8d Yan, Zheng 2017-09-01 864
2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
1d3576fd10f0d7 Sage Weil 2009-10-06 867
af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
1d3576fd10f0d7 Sage Weil 2009-10-06 876
0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
1d3576fd10f0d7 Sage Weil 2009-10-06 878
1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 892
1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
1d3576fd10f0d7 Sage Weil 2009-10-06 938
1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
1d3576fd10f0d7 Sage Weil 2009-10-06 944
e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
5b64640cf65be4 Yan, Zheng 2016-01-07 955
1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
8c71897be2ddfd Henry C Chang 2011-05-03 963
3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
88486957f9fbf5 Alex Elder 2013-03-14 967
5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
88486957f9fbf5 Alex Elder 2013-03-14 977 }
5b64640cf65be4 Yan, Zheng 2016-01-07 978
5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
5b64640cf65be4 Yan, Zheng 2016-01-07 988
5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
1d3576fd10f0d7 Sage Weil 2009-10-06 993
1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
2baba25019ec56 Yehuda Sadeh 2009-12-18 997
5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
0713e5f24b7deb Yan, Zheng 2017-08-31 1005
0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
0713e5f24b7deb Yan, Zheng 2017-08-31 1008
8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1011
1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
1d3576fd10f0d7 Sage Weil 2009-10-06 1026
1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1034
5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
5b64640cf65be4 Yan, Zheng 2016-01-07 1038
5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1059
5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
5b64640cf65be4 Yan, Zheng 2016-01-07 1062
5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
1702e79734104d Jeff Layton 2021-12-07 1069 /*
1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
1702e79734104d Jeff Layton 2021-12-07 1072 */
5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
1702e79734104d Jeff Layton 2021-12-07 1077
1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
1702e79734104d Jeff Layton 2021-12-07 1080
1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
5b64640cf65be4 Yan, Zheng 2016-01-07 1090
5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1096
5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
5b64640cf65be4 Yan, Zheng 2016-01-07 1103
1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
1d3576fd10f0d7 Sage Weil 2009-10-06 1116
5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
e5975c7c8eb6ae Alex Elder 2013-03-14 1120
5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
e5975c7c8eb6ae Alex Elder 2013-03-14 1122
a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1128
5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
e5975c7c8eb6ae Alex Elder 2013-03-14 1148
fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
1d3576fd10f0d7 Sage Weil 2009-10-06 1153
5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
5b64640cf65be4 Yan, Zheng 2016-01-07 1157
2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
1d3576fd10f0d7 Sage Weil 2009-10-06 1166
1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1172
1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
f275635ee0b664 Yan, Zheng 2017-09-01 1177
f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
f275635ee0b664 Yan, Zheng 2017-09-01 1199
2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1204
1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
1d3576fd10f0d7 Sage Weil 2009-10-06 1207
1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
1d3576fd10f0d7 Sage Weil 2009-10-06 1214
:::::: The code at line 788 was first introduced by commit
:::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
:::::: TO: Sage Weil <sage@newdream.net>
:::::: CC: Sage Weil <sage@newdream.net>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
2022-02-10 12:14 ` kernel test robot
@ 2022-02-10 13:01 ` Jeff Layton
-1 siblings, 0 replies; 6+ messages in thread
From: Jeff Layton @ 2022-02-10 13:01 UTC (permalink / raw)
To: kernel test robot, David Howells
Cc: llvm, kbuild-all, ceph-devel, Ilya Dryomov
On Thu, 2022-02-10 at 20:14 +0800, kernel test robot wrote:
> tree: https://github.com/ceph/ceph-client.git testing
> head: 6dc7235ee916b768b31afa12ab507874bd278573
> commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
> config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp@intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install mips cross compiling tool for clang build
> # apt-get install binutils-mips-linux-gnu
> # https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
> git remote add ceph-client https://github.com/ceph/ceph-client.git
> git fetch --no-tags ceph-client testing
> git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> > > fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
ceph_writepages_start is a major stack hog, but the commit mentioned
above doesn't affect that function, AFAICT. I don't think this is a new
problem from that patch.
This looks more like llvm on mips blew up?
> static int ceph_writepages_start(struct address_space
> ^
> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
> .set mips64r6
> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
> 1: lld $0, $2
> or $1, $0, $3
> scd $1, $2
> beqzc $1, 1b
> .set pop
> '
> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
> Stack dump:
> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
> #0 0x000055a535e1f68f Signals.cpp:0:0
> #1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
> #2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
> #3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
> #4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
> #5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
> #6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
> #7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
> #8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
> #9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
> #10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
> #11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
> #12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
> #13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
> #14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
> #15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
> #16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
> #17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
> #18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
> #19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
> #20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
> #21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
> #22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
> #23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
> #24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
> #25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
> #26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
> #27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
> #28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
> #29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
> #30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> Target: mips64-unknown-linux
> Thread model: posix
> InstalledDir: /opt/cross/clang-aa845d7a24/bin
> clang-15: note: diagnostic msg:
> Makefile arch fs include kernel nr_bisected scripts source usr
> --
> > > fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
> static int ceph_writepages_start(struct address_space
> ^
> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
> .set mips64r6
> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
> 1: lld $0, $2
> or $1, $0, $3
> scd $1, $2
> beqzc $1, 1b
> .set pop
> '
> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
> Stack dump:
> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
> #0 0x0000562358d5368f Signals.cpp:0:0
> #1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
> #2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
> #3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
> #4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
> #5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
> #6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
> #7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
> #8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
> #9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
> #10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
> #11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
> #12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
> #13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
> #14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
> #15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
> #16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
> #17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
> #18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
> #19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
> #20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
> #21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
> #22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
> #23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
> #24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
> #25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
> #26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
> #27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
> #28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
> #29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
> #30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> Target: mips64-unknown-linux
> Thread model: posix
> InstalledDir: /opt/cross/clang-aa845d7a24/bin
> clang-15: note: diagnostic msg:
> Makefile arch fs include kernel nr_bisected scripts source usr
>
>
> vim +/ceph_writepages_start +788 fs/ceph/addr.c
>
> 1d3576fd10f0d7 Sage Weil 2009-10-06 784
> 1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
> 1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
> 1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
> fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
> fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
> 80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
> 93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
> 1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
> af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
> 1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 805
> 3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
> 1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
> 1d3576fd10f0d7 Sage Weil 2009-10-06 809
> 5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
> 6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
> 6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
> 6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
> 6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
> 6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
> a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
> 95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 821
> 8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 823
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 826
> 1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
> 05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
> 1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
> 1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
> 1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
> fc2744aa12da71 Yan, Zheng 2013-05-31 838
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
> 1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
> 1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 864
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 867
> af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
> 0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
> 0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
> a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 876
> 0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 878
> 1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
> 2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
> 2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
> 0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
> 1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
> 1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 892
> 1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
> 1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
> af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
> af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
> af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
> af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
> 1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
> 1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
> 1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
> 1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
> 1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
> 1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
> 1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
> c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
> c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
> c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
> af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
> af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
> af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
> af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
> af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
> 1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
> 0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
> 1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 938
> 1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 944
> e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
> e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
> e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
> 5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
> e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
> dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 955
> 1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
> 6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
> dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
> dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
> dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
> dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
> 8c71897be2ddfd Henry C Chang 2011-05-03 963
> 3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
> 88486957f9fbf5 Alex Elder 2013-03-14 967
> 5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
> 88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
> 6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
> 6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
> fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
> 88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
> a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
> a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
> e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
> 88486957f9fbf5 Alex Elder 2013-03-14 977 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 978
> 5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
> a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
> 5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 988
> 5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 993
> 1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
> 1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 997
> 5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
> 5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
> 09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
> 213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1005
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1008
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1011
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1026
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1034
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
> e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1038
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
> 54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1059
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1062
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
> 1702e79734104d Jeff Layton 2021-12-07 1069 /*
> 1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
> 1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
> 1702e79734104d Jeff Layton 2021-12-07 1072 */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
> 1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
> 3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
> 1702e79734104d Jeff Layton 2021-12-07 1077
> 1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
> 1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
> 1702e79734104d Jeff Layton 2021-12-07 1080
> 1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
> a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1090
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1096
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
> 1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
> 1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
> 1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1103
> 1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
> 1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
> e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
> e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
> e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
> 1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
> 1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
> e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1116
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
> a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
> e5975c7c8eb6ae Alex Elder 2013-03-14 1120
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
> e5975c7c8eb6ae Alex Elder 2013-03-14 1122
> a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1128
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
> 6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
> a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
> a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
> e5975c7c8eb6ae Alex Elder 2013-03-14 1148
> fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
> 9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
> 9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1153
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1157
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
> af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1166
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1172
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
> f275635ee0b664 Yan, Zheng 2017-09-01 1177
> f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
> f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
> f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
> f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
> f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
> f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
> f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
> f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
> f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
> 67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
> f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
> f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
> f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
> f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
> f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
> f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1199
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1204
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1207
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1214
>
> :::::: The code at line 788 was first introduced by commit
> :::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
>
> :::::: TO: Sage Weil <sage@newdream.net>
> :::::: CC: Sage Weil <sage@newdream.net>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
--
Jeff Layton <jlayton@kernel.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
@ 2022-02-10 13:01 ` Jeff Layton
0 siblings, 0 replies; 6+ messages in thread
From: Jeff Layton @ 2022-02-10 13:01 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 53990 bytes --]
On Thu, 2022-02-10 at 20:14 +0800, kernel test robot wrote:
> tree: https://github.com/ceph/ceph-client.git testing
> head: 6dc7235ee916b768b31afa12ab507874bd278573
> commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
> config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp(a)intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install mips cross compiling tool for clang build
> # apt-get install binutils-mips-linux-gnu
> # https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
> git remote add ceph-client https://github.com/ceph/ceph-client.git
> git fetch --no-tags ceph-client testing
> git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> > > fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
ceph_writepages_start is a major stack hog, but the commit mentioned
above doesn't affect that function, AFAICT. I don't think this is a new
problem from that patch.
This looks more like llvm on mips blew up?
> static int ceph_writepages_start(struct address_space
> ^
> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
> .set mips64r6
> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
> 1: lld $0, $2
> or $1, $0, $3
> scd $1, $2
> beqzc $1, 1b
> .set pop
> '
> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
> Stack dump:
> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
> #0 0x000055a535e1f68f Signals.cpp:0:0
> #1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
> #2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
> #3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
> #4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
> #5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
> #6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
> #7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
> #8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
> #9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
> #10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
> #11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
> #12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
> #13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
> #14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
> #15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
> #16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
> #17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
> #18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
> #19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
> #20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
> #21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
> #22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
> #23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
> #24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
> #25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
> #26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
> #27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
> #28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
> #29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
> #30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> Target: mips64-unknown-linux
> Thread model: posix
> InstalledDir: /opt/cross/clang-aa845d7a24/bin
> clang-15: note: diagnostic msg:
> Makefile arch fs include kernel nr_bisected scripts source usr
> --
> > > fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
> static int ceph_writepages_start(struct address_space
> ^
> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
> .set mips64r6
> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
> 1: lld $0, $2
> or $1, $0, $3
> scd $1, $2
> beqzc $1, 1b
> .set pop
> '
> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
> Stack dump:
> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
> #0 0x0000562358d5368f Signals.cpp:0:0
> #1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
> #2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
> #3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
> #4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
> #5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
> #6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
> #7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
> #8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
> #9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
> #10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
> #11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
> #12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
> #13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
> #14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
> #15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
> #16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
> #17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
> #18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
> #19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
> #20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
> #21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
> #22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
> #23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
> #24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
> #25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
> #26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
> #27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
> #28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
> #29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
> #30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
> Target: mips64-unknown-linux
> Thread model: posix
> InstalledDir: /opt/cross/clang-aa845d7a24/bin
> clang-15: note: diagnostic msg:
> Makefile arch fs include kernel nr_bisected scripts source usr
>
>
> vim +/ceph_writepages_start +788 fs/ceph/addr.c
>
> 1d3576fd10f0d7 Sage Weil 2009-10-06 784
> 1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
> 1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
> 1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
> fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
> fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
> 80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
> 93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
> 1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
> af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
> 1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 805
> 3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
> 1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
> 1d3576fd10f0d7 Sage Weil 2009-10-06 809
> 5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
> 6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
> 6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
> 6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
> 6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
> 6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
> a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
> 95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 821
> 8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 823
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
> 590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 826
> 1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
> 05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
> 1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
> 1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
> 1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
> fc2744aa12da71 Yan, Zheng 2013-05-31 838
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
> 1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
> 1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 864
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 867
> af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
> 0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
> 0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
> a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 876
> 0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 878
> 1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
> 2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
> 2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
> 0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
> 1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
> 1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 892
> 1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
> 1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
> af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
> af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
> af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
> af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
> 1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
> 1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
> 1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
> 1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
> 1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
> 1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
> 1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
> c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
> c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
> c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
> af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
> af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
> af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
> af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
> af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
> af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
> 1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
> 0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
> 1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 938
> 1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
> 0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 944
> e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
> e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
> e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
> 5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
> e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
> dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 955
> 1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
> 6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
> dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
> dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
> dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
> dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
> 8c71897be2ddfd Henry C Chang 2011-05-03 963
> 3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
> 88486957f9fbf5 Alex Elder 2013-03-14 967
> 5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
> 88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
> 6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
> 6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
> fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
> 88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
> a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
> a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
> e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
> 88486957f9fbf5 Alex Elder 2013-03-14 977 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 978
> 5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
> a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
> 5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 988
> 5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 993
> 1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
> 1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 997
> 5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
> 5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
> 09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
> 213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1005
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1008
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1011
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1026
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
> 0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1034
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
> e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1038
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
> 54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
> 1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1059
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1062
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
> 1702e79734104d Jeff Layton 2021-12-07 1069 /*
> 1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
> 1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
> 1702e79734104d Jeff Layton 2021-12-07 1072 */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
> 1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
> 3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
> 1702e79734104d Jeff Layton 2021-12-07 1077
> 1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
> 1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
> 1702e79734104d Jeff Layton 2021-12-07 1080
> 1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
> a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1090
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1096
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
> 1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
> 1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
> 1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1103
> 1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
> 1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
> e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
> e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
> e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
> 1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
> 1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
> e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1116
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
> a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
> e5975c7c8eb6ae Alex Elder 2013-03-14 1120
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
> e5975c7c8eb6ae Alex Elder 2013-03-14 1122
> a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1128
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
> 6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
> a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
> a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
> e5975c7c8eb6ae Alex Elder 2013-03-14 1148
> fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
> 9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
> 9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1153
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
> 5b64640cf65be4 Yan, Zheng 2016-01-07 1157
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
> af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1166
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1172
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
> f275635ee0b664 Yan, Zheng 2017-09-01 1177
> f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
> f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
> f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
> f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
> f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
> f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
> f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
> f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
> f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
> 67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
> f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
> f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
> f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
> f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
> f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
> f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
> f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
> f275635ee0b664 Yan, Zheng 2017-09-01 1199
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1204
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1207
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
> 1d3576fd10f0d7 Sage Weil 2009-10-06 1214
>
> :::::: The code at line 788 was first introduced by commit
> :::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
>
> :::::: TO: Sage Weil <sage@newdream.net>
> :::::: CC: Sage Weil <sage@newdream.net>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
--
Jeff Layton <jlayton@kernel.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
2022-02-10 13:01 ` Jeff Layton
@ 2022-02-10 13:28 ` Xiubo Li
-1 siblings, 0 replies; 6+ messages in thread
From: Xiubo Li @ 2022-02-10 13:28 UTC (permalink / raw)
To: Jeff Layton, kernel test robot, David Howells
Cc: llvm, kbuild-all, ceph-devel, Ilya Dryomov
On 2/10/22 9:01 PM, Jeff Layton wrote:
> On Thu, 2022-02-10 at 20:14 +0800, kernel test robot wrote:
>> tree: https://github.com/ceph/ceph-client.git testing
>> head: 6dc7235ee916b768b31afa12ab507874bd278573
>> commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
>> config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp@intel.com/config)
>> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # install mips cross compiling tool for clang build
>> # apt-get install binutils-mips-linux-gnu
>> # https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
>> git remote add ceph-client https://github.com/ceph/ceph-client.git
>> git fetch --no-tags ceph-client testing
>> git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
>> # save the config file to linux build tree
>> mkdir build_dir
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> All warnings (new ones prefixed by >>):
>>
>>>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
>
> ceph_writepages_start is a major stack hog, but the commit mentioned
> above doesn't affect that function, AFAICT. I don't think this is a new
> problem from that patch.
>
> This looks more like llvm on mips blew up?
Yeah, it seems. The 'ceph_writepages_start()' will consume around 350
bytes in the stack frame.
And before calling it the stack frame already reaches full.
>
>> static int ceph_writepages_start(struct address_space
>> ^
>> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
>> .set mips64r6
>> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
>> 1: lld $0, $2
>> or $1, $0, $3
>> scd $1, $2
>> beqzc $1, 1b
>> .set pop
>> '
>> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
>> Stack dump:
>> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
>> 1. <eof> parser at end of file
>> 2. Code generation
>> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
>> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
>> #0 0x000055a535e1f68f Signals.cpp:0:0
>> #1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
>> #2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
>> #3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
>> #4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
>> #5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
>> #6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
>> #7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
>> #8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
>> #9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
>> #10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
>> #11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
>> #12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
>> #13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
>> #14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
>> #15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
>> #16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
>> #17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
>> #18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
>> #19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
>> #20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
>> #21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
>> #22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
>> #23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
>> #24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
>> #25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
>> #26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
>> #27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
>> #28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
>> #29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
>> #30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
>> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
>> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> Target: mips64-unknown-linux
>> Thread model: posix
>> InstalledDir: /opt/cross/clang-aa845d7a24/bin
>> clang-15: note: diagnostic msg:
>> Makefile arch fs include kernel nr_bisected scripts source usr
>> --
>>>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
>> static int ceph_writepages_start(struct address_space
>> ^
>> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
>> .set mips64r6
>> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
>> 1: lld $0, $2
>> or $1, $0, $3
>> scd $1, $2
>> beqzc $1, 1b
>> .set pop
>> '
>> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
>> Stack dump:
>> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
>> 1. <eof> parser at end of file
>> 2. Code generation
>> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
>> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
>> #0 0x0000562358d5368f Signals.cpp:0:0
>> #1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
>> #2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
>> #3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
>> #4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
>> #5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
>> #6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
>> #7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
>> #8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
>> #9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
>> #10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
>> #11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
>> #12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
>> #13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
>> #14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
>> #15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
>> #16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
>> #17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
>> #18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
>> #19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
>> #20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
>> #21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
>> #22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
>> #23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
>> #24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
>> #25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
>> #26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
>> #27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
>> #28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
>> #29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
>> #30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
>> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
>> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> Target: mips64-unknown-linux
>> Thread model: posix
>> InstalledDir: /opt/cross/clang-aa845d7a24/bin
>> clang-15: note: diagnostic msg:
>> Makefile arch fs include kernel nr_bisected scripts source usr
>>
>>
>> vim +/ceph_writepages_start +788 fs/ceph/addr.c
>>
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 784
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
>> 80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
>> 93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
>> 1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
>> af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
>> 1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 805
>> 3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 809
>> 5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
>> a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
>> 95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
>> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 821
>> 8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 823
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 826
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
>> 05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 838
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 864
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 867
>> af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
>> a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 876
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 878
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
>> 2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
>> 2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
>> 0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 892
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
>> af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
>> af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
>> af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
>> af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
>> 1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
>> 1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
>> 1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
>> c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
>> c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
>> c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
>> af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
>> af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
>> af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
>> af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
>> af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
>> 1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
>> 1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 938
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 944
>> e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
>> e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
>> e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
>> e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
>> dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 955
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
>> 6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
>> dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
>> dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
>> dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
>> dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
>> 8c71897be2ddfd Henry C Chang 2011-05-03 963
>> 3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
>> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
>> 88486957f9fbf5 Alex Elder 2013-03-14 967
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
>> 88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
>> 6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
>> 6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
>> fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
>> 88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
>> a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
>> 88486957f9fbf5 Alex Elder 2013-03-14 977 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 978
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
>> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 988
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 993
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 997
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
>> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
>> 09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
>> 213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1005
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1008
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1011
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1026
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1034
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1038
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
>> 54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1059
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1062
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
>> 1702e79734104d Jeff Layton 2021-12-07 1069 /*
>> 1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
>> 1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
>> 1702e79734104d Jeff Layton 2021-12-07 1072 */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
>> 1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
>> 3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
>> 1702e79734104d Jeff Layton 2021-12-07 1077
>> 1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
>> 1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
>> 1702e79734104d Jeff Layton 2021-12-07 1080
>> 1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
>> a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1090
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1096
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
>> 1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
>> 1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
>> 1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1103
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
>> e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
>> e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
>> e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
>> e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1116
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
>> a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1120
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1122
>> a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1128
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
>> 6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
>> a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1148
>> fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
>> 9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
>> 9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1153
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1157
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
>> af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1166
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1172
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1177
>> f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
>> f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
>> f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
>> f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
>> 67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
>> f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
>> f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
>> f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
>> f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
>> f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1199
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1204
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1207
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1214
>>
>> :::::: The code at line 788 was first introduced by commit
>> :::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
>>
>> :::::: TO: Sage Weil <sage@newdream.net>
>> :::::: CC: Sage Weil <sage@newdream.net>
>>
>> ---
>> 0-DAY CI Kernel Test Service, Intel Corporation
>> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
@ 2022-02-10 13:28 ` Xiubo Li
0 siblings, 0 replies; 6+ messages in thread
From: Xiubo Li @ 2022-02-10 13:28 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 54765 bytes --]
On 2/10/22 9:01 PM, Jeff Layton wrote:
> On Thu, 2022-02-10 at 20:14 +0800, kernel test robot wrote:
>> tree: https://github.com/ceph/ceph-client.git testing
>> head: 6dc7235ee916b768b31afa12ab507874bd278573
>> commit: 85fc162016ac8d19e28877a15f55c0fa4b47713b [6/8] ceph: Make ceph_netfs_issue_op() handle inlined data
>> config: mips-randconfig-r014-20220209 (https://download.01.org/0day-ci/archive/20220210/202202102053.7C17duIV-lkp(a)intel.com/config)
>> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> reproduce (this is a W=1 build):
>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>> chmod +x ~/bin/make.cross
>> # install mips cross compiling tool for clang build
>> # apt-get install binutils-mips-linux-gnu
>> # https://github.com/ceph/ceph-client/commit/85fc162016ac8d19e28877a15f55c0fa4b47713b
>> git remote add ceph-client https://github.com/ceph/ceph-client.git
>> git fetch --no-tags ceph-client testing
>> git checkout 85fc162016ac8d19e28877a15f55c0fa4b47713b
>> # save the config file to linux build tree
>> mkdir build_dir
>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ceph/
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> All warnings (new ones prefixed by >>):
>>
>>>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
>
> ceph_writepages_start is a major stack hog, but the commit mentioned
> above doesn't affect that function, AFAICT. I don't think this is a new
> problem from that patch.
>
> This looks more like llvm on mips blew up?
Yeah, it seems. The 'ceph_writepages_start()' will consume around 350
bytes in the stack frame.
And before calling it the stack frame already reaches full.
>
>> static int ceph_writepages_start(struct address_space
>> ^
>> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
>> .set mips64r6
>> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
>> 1: lld $0, $2
>> or $1, $0, $3
>> scd $1, $2
>> beqzc $1, 1b
>> .set pop
>> '
>> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
>> Stack dump:
>> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -I fs/ceph -I ./fs/ceph -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
>> 1. <eof> parser at end of file
>> 2. Code generation
>> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
>> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
>> #0 0x000055a535e1f68f Signals.cpp:0:0
>> #1 0x000055a535e1d56c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
>> #2 0x000055a535d5d9e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
>> #3 0x000055a535e15c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
>> #4 0x000055a533a508bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
>> #5 0x000055a535d6449c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
>> #6 0x000055a536a56000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
>> #7 0x000055a536a51f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
>> #8 0x000055a5344bb1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
>> #9 0x000055a535170a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
>> #10 0x000055a5355b1757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
>> #11 0x000055a5355b18d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
>> #12 0x000055a5355b244f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
>> #13 0x000055a536137917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
>> #14 0x000055a536d6f063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
>> #15 0x000055a537845629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
>> #16 0x000055a536d6de9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
>> #17 0x000055a53676ac81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
>> #18 0x000055a536701b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
>> #19 0x000055a53682f59b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
>> #20 0x000055a533a51e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
>> #21 0x000055a533a4eb3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
>> #22 0x000055a536599765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
>> #23 0x000055a535d5d8a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
>> #24 0x000055a53659a05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
>> #25 0x000055a53656ec57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
>> #26 0x000055a53656f637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
>> #27 0x000055a536578cc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
>> #28 0x000055a53397738f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
>> #29 0x00007fe35f12cd0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
>> #30 0x000055a533a4e65a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
>> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
>> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> Target: mips64-unknown-linux
>> Thread model: posix
>> InstalledDir: /opt/cross/clang-aa845d7a24/bin
>> clang-15: note: diagnostic msg:
>> Makefile arch fs include kernel nr_bisected scripts source usr
>> --
>>>> fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start'
>> static int ceph_writepages_start(struct address_space
>> ^
>> fatal error: error in backend: Nested variants found in inline asm string: ' .set push
>> .set mips64r6
>> .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 190, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r6; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
>> 1: lld $0, $2
>> or $1, $0, $3
>> scd $1, $2
>> beqzc $1, 1b
>> .set pop
>> '
>> PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
>> Stack dump:
>> 0. Program arguments: clang -Wp,-MMD,fs/ceph/.addr.o.d -nostdinc -Iarch/mips/include -I./arch/mips/include/generated -Iinclude -I./include -Iarch/mips/include/uapi -I./arch/mips/include/generated/uapi -Iinclude/uapi -I./include/generated/uapi -include include/linux/compiler-version.h -include include/linux/kconfig.h -include include/linux/compiler_types.h -D__KERNEL__ -DVMLINUX_LOAD_ADDRESS=0xffffffff84000000 -DLINKER_LOAD_ADDRESS=0xffffffff84000000 -DDATAOFFSET=0 -Qunused-arguments -fmacro-prefix-map== -DKBUILD_EXTRA_WARN1 -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Wno-format-security -std=gnu89 --target=mips64-linux -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -mabi=64 -G 0 -mno-abicalls -fno-pic -pipe -msoft-float -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float -ffreestanding -EB -fno-stack-check -march=mips64r6 -Wa,--trap -DTOOLCHAIN_SUPPORTS_VIRT -Iarch/mips/include/asm/mach-generic -Iarch/mips/include/asm/mach-generic -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks -Wno-frame-address -Wno-address-of-packed-member -O2 -Wframe-larger-than=2048 -fno-stack-protector -Wimplicit-fallthrough -Wno-gnu -mno-global-merge -Wno-unused-but-set-variable -Wno-unused-const-variable -ftrivial-auto-var-init=pattern -fno-stack-clash-protection -pg -Wdeclaration-after-statement -Wvla -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -fno-strict-overflow -fno-stack-check -Werror=date-time -Werror=incompatible-pointer-types -Wextra -Wunused -Wno-unused-parameter -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wmissing-include-dirs -Wunused-but-set-variable -Wunused-const-variable -Wno-missing-field-initializers -Wno-sign-compare -Wno-type-limits -fsanitize=unreachable -fsanitize=enum -DMODULE -mlong-calls -DKBUILD_BASENAME="addr" -DKBUILD_MODNAME="ceph" -D__KBUILD_MODNAME=kmod_ceph -c -o fs/ceph/addr.o fs/ceph/addr.c
>> 1. <eof> parser at end of file
>> 2. Code generation
>> 3. Running pass 'Function Pass Manager' on module 'fs/ceph/addr.c'.
>> 4. Running pass 'Mips Assembly Printer' on function '@ceph_writepages_start'
>> #0 0x0000562358d5368f Signals.cpp:0:0
>> #1 0x0000562358d5156c llvm::sys::CleanupOnSignal(unsigned long) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x347456c)
>> #2 0x0000562358c919e7 llvm::CrashRecoveryContext::HandleExit(int) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b49e7)
>> #3 0x0000562358d49c1e llvm::sys::Process::Exit(int, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x346cc1e)
>> #4 0x00005623569848bb (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a78bb)
>> #5 0x0000562358c9849c llvm::report_fatal_error(llvm::Twine const&, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33bb49c)
>> #6 0x000056235998a000 llvm::AsmPrinter::emitInlineAsm(llvm::MachineInstr const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40ad000)
>> #7 0x0000562359985f34 llvm::AsmPrinter::emitFunctionBody() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x40a8f34)
>> #8 0x00005623573ef1e7 llvm::MipsAsmPrinter::runOnMachineFunction(llvm::MachineFunction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x1b121e7)
>> #9 0x00005623580a4a3d llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.53) MachineFunctionPass.cpp:0:0
>> #10 0x00005623584e5757 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c08757)
>> #11 0x00005623584e58d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c088d1)
>> #12 0x00005623584e644f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x2c0944f)
>> #13 0x000056235906b917 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x378e917)
>> #14 0x0000562359ca3063 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c6063)
>> #15 0x000056235a779629 clang::ParseAST(clang::Sema&, bool, bool) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x4e9c629)
>> #16 0x0000562359ca1e9f clang::CodeGenAction::ExecuteAction() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x43c4e9f)
>> #17 0x000056235969ec81 clang::FrontendAction::Execute() (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3dc1c81)
>> #18 0x0000562359635b0a clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3d58b0a)
>> #19 0x000056235976359b (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3e8659b)
>> #20 0x0000562356985e6c cc1_main(llvm::ArrayRef<char char (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a8e6c)
>> #21 0x0000562356982b3b ExecuteCC1Tool(llvm::SmallVectorImpl<char driver.cpp:0:0
>> #22 0x00005623594cd765 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const::'lambda'()>(long) Job.cpp:0:0
>> #23 0x0000562358c918a3 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x33b48a3)
>> #24 0x00005623594ce05e clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> const (.part.216) Job.cpp:0:0
>> #25 0x00005623594a2c57 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc5c57)
>> #26 0x00005623594a3637 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) const (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bc6637)
>> #27 0x00005623594accc9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command >&) (/opt/cross/clang-aa845d7a24/bin/clang-15+0x3bcfcc9)
>> #28 0x00005623568ab38f main (/opt/cross/clang-aa845d7a24/bin/clang-15+0xfce38f)
>> #29 0x00007f845ced9d0a __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26d0a)
>> #30 0x000056235698265a _start (/opt/cross/clang-aa845d7a24/bin/clang-15+0x10a565a)
>> clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
>> clang version 15.0.0 (git://gitmirror/llvm_project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d)
>> Target: mips64-unknown-linux
>> Thread model: posix
>> InstalledDir: /opt/cross/clang-aa845d7a24/bin
>> clang-15: note: diagnostic msg:
>> Makefile arch fs include kernel nr_bisected scripts source usr
>>
>>
>> vim +/ceph_writepages_start +788 fs/ceph/addr.c
>>
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 784
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 785 /*
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 786 * initiate async writeback
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 787 */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 @788 static int ceph_writepages_start(struct address_space *mapping,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 789 struct writeback_control *wbc)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 790 {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 791 struct inode *inode = mapping->host;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 792 struct ceph_inode_info *ci = ceph_inode(inode);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 793 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 794 struct ceph_vino vino = ceph_vino(inode);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 795 pgoff_t index, start_index, end = -1;
>> 80e755fedebc8d Sage Weil 2010-03-31 796 struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 797 struct pagevec pvec;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 798 int rc = 0;
>> 93407472a21b82 Fabian Frederick 2017-02-27 799 unsigned int wsize = i_blocksize(inode);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 800 struct ceph_osd_request *req = NULL;
>> 1f934b00e90752 Yan, Zheng 2017-08-30 801 struct ceph_writeback_ctl ceph_wbc;
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 802 bool should_loop, range_whole = false;
>> af9cc401ce7452 Yan, Zheng 2018-03-04 803 bool done = false;
>> 1702e79734104d Jeff Layton 2021-12-07 804 bool caching = ceph_is_cache_enabled(inode);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 805
>> 3fb99d483e614b Yanhu Cao 2017-07-21 806 dout("writepages_start %p (mode=%s)\n", inode,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 807 wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 808 (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 809
>> 5d6451b1489ad1 Jeff Layton 2021-08-31 810 if (ceph_inode_is_shutdown(inode)) {
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 811 if (ci->i_wrbuffer_ref > 0) {
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 812 pr_warn_ratelimited(
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 813 "writepage_start %p %lld forced umount\n",
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 814 inode, ceph_ino(inode));
>> 6c93df5db628e7 Yan, Zheng 2016-04-15 815 }
>> a341d4df87487a Yan, Zheng 2015-07-01 816 mapping_set_error(mapping, -EIO);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 817 return -EIO; /* we're in a forced umount, don't write! */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 818 }
>> 95cca2b44e54b0 Yan, Zheng 2017-07-11 819 if (fsc->mount_options->wsize < wsize)
>> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 820 wsize = fsc->mount_options->wsize;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 821
>> 8667982014d604 Mel Gorman 2017-11-15 822 pagevec_init(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 823
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 824 start_index = wbc->range_cyclic ? mapping->writeback_index : 0;
>> 590e9d9861f5f2 Yan, Zheng 2017-09-03 825 index = start_index;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 826
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 827 retry:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 828 /* find oldest snap context with dirty data */
>> 05455e1177f768 Yan, Zheng 2017-09-02 829 snapc = get_oldest_context(inode, &ceph_wbc, NULL);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 830 if (!snapc) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 831 /* hmm, why does writepages get called when there
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 832 is no dirty data? */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 833 dout(" no snap context with dirty data?\n");
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 834 goto out;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 835 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 836 dout(" oldest snapc is %p seq %lld (%d snaps)\n",
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 837 snapc, snapc->seq, snapc->num_snaps);
>> fc2744aa12da71 Yan, Zheng 2013-05-31 838
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 839 should_loop = false;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 840 if (ceph_wbc.head_snapc && snapc != last_snapc) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 841 /* where to start/end? */
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 842 if (wbc->range_cyclic) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 843 index = start_index;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 844 end = -1;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 845 if (index > 0)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 846 should_loop = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 847 dout(" cyclic, start at %lu\n", index);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 848 } else {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 849 index = wbc->range_start >> PAGE_SHIFT;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 850 end = wbc->range_end >> PAGE_SHIFT;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 851 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 852 range_whole = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 853 dout(" not cyclic, %lu to %lu\n", index, end);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 854 }
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 855 } else if (!ceph_wbc.head_snapc) {
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 856 /* Do not respect wbc->range_{start,end}. Dirty pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 857 * in that range can be associated with newer snapc.
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 858 * They are not writeable until we write all dirty pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 859 * associated with 'snapc' get written */
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 860 if (index > 0)
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 861 should_loop = true;
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 862 dout(" non-head snapc, range whole\n");
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 863 }
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 864
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 865 ceph_put_snap_context(last_snapc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 866 last_snapc = snapc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 867
>> af9cc401ce7452 Yan, Zheng 2018-03-04 868 while (!done && index <= end) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 869 int num_ops = 0, op_idx;
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 870 unsigned i, pvec_pages, max_pages, locked_pages = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 871 struct page **pages = NULL, **data_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 872 struct page *page;
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 873 pgoff_t strip_unit_end = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 874 u64 offset = 0, len = 0;
>> a0102bda5bc099 Jeff Layton 2020-07-30 875 bool from_pool = false;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 876
>> 0e5ecac7168366 Yan, Zheng 2017-08-31 877 max_pages = wsize >> PAGE_SHIFT;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 878
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 879 get_more_pages:
>> 2e169296603470 Jeff Layton 2020-09-14 880 pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index,
>> 2e169296603470 Jeff Layton 2020-09-14 881 end, PAGECACHE_TAG_DIRTY);
>> 0ed75fc8d288f4 Jan Kara 2017-11-15 882 dout("pagevec_lookup_range_tag got %d\n", pvec_pages);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 883 if (!pvec_pages && !locked_pages)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 884 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 885 for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 886 page = pvec.pages[i];
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 887 dout("? %p idx %lu\n", page, page->index);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 888 if (locked_pages == 0)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 889 lock_page(page); /* first page */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 890 else if (!trylock_page(page))
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 891 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 892
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 893 /* only dirty pages, or our accounting breaks */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 894 if (unlikely(!PageDirty(page)) ||
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 895 unlikely(page->mapping != mapping)) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 896 dout("!dirty or !mapping %p\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 897 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 898 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 899 }
>> af9cc401ce7452 Yan, Zheng 2018-03-04 900 /* only if matching snap context */
>> af9cc401ce7452 Yan, Zheng 2018-03-04 901 pgsnapc = page_snap_context(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 902 if (pgsnapc != snapc) {
>> af9cc401ce7452 Yan, Zheng 2018-03-04 903 dout("page snapc %p %lld != oldest %p %lld\n",
>> af9cc401ce7452 Yan, Zheng 2018-03-04 904 pgsnapc, pgsnapc->seq, snapc, snapc->seq);
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 905 if (!should_loop &&
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 906 !ceph_wbc.head_snapc &&
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 907 wbc->sync_mode != WB_SYNC_NONE)
>> 1582af2eaaf17c Yan, Zheng 2018-03-06 908 should_loop = true;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 909 unlock_page(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 910 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 911 }
>> 1f934b00e90752 Yan, Zheng 2017-08-30 912 if (page_offset(page) >= ceph_wbc.i_size) {
>> 1f934b00e90752 Yan, Zheng 2017-08-30 913 dout("%p page eof %llu\n",
>> 1f934b00e90752 Yan, Zheng 2017-08-30 914 page, ceph_wbc.i_size);
>> c95f1c5f436bad Erqi Chen 2019-07-24 915 if ((ceph_wbc.size_stable ||
>> c95f1c5f436bad Erqi Chen 2019-07-24 916 page_offset(page) >= i_size_read(inode)) &&
>> c95f1c5f436bad Erqi Chen 2019-07-24 917 clear_page_dirty_for_io(page))
>> af9cc401ce7452 Yan, Zheng 2018-03-04 918 mapping->a_ops->invalidatepage(page,
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 919 0, thp_size(page));
>> af9cc401ce7452 Yan, Zheng 2018-03-04 920 unlock_page(page);
>> af9cc401ce7452 Yan, Zheng 2018-03-04 921 continue;
>> af9cc401ce7452 Yan, Zheng 2018-03-04 922 }
>> af9cc401ce7452 Yan, Zheng 2018-03-04 923 if (strip_unit_end && (page->index > strip_unit_end)) {
>> af9cc401ce7452 Yan, Zheng 2018-03-04 924 dout("end of strip unit %p\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 925 unlock_page(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 926 break;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 927 }
>> 1702e79734104d Jeff Layton 2021-12-07 928 if (PageWriteback(page) || PageFsCache(page)) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 929 if (wbc->sync_mode == WB_SYNC_NONE) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 930 dout("%p under writeback\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 931 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 932 continue;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 933 }
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 934 dout("waiting on writeback %p\n", page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 935 wait_on_page_writeback(page);
>> 1702e79734104d Jeff Layton 2021-12-07 936 wait_on_page_fscache(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 937 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 938
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 939 if (!clear_page_dirty_for_io(page)) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 940 dout("%p !clear_page_dirty_for_io\n", page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 941 unlock_page(page);
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 942 continue;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 943 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 944
>> e5975c7c8eb6ae Alex Elder 2013-03-14 945 /*
>> e5975c7c8eb6ae Alex Elder 2013-03-14 946 * We have something to write. If this is
>> e5975c7c8eb6ae Alex Elder 2013-03-14 947 * the first locked page this time through,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 948 * calculate max possinle write size and
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 949 * allocate a page array
>> e5975c7c8eb6ae Alex Elder 2013-03-14 950 */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 951 if (locked_pages == 0) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 952 u64 objnum;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 953 u64 objoff;
>> dccbf08005df80 Ilya Dryomov 2018-02-17 954 u32 xlen;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 955
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 956 /* prepare async write request */
>> 6285bc23127741 Alex Elder 2012-10-02 957 offset = (u64)page_offset(page);
>> dccbf08005df80 Ilya Dryomov 2018-02-17 958 ceph_calc_file_object_mapping(&ci->i_layout,
>> dccbf08005df80 Ilya Dryomov 2018-02-17 959 offset, wsize,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 960 &objnum, &objoff,
>> dccbf08005df80 Ilya Dryomov 2018-02-17 961 &xlen);
>> dccbf08005df80 Ilya Dryomov 2018-02-17 962 len = xlen;
>> 8c71897be2ddfd Henry C Chang 2011-05-03 963
>> 3fb99d483e614b Yanhu Cao 2017-07-21 964 num_ops = 1;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 965 strip_unit_end = page->index +
>> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 966 ((len - 1) >> PAGE_SHIFT);
>> 88486957f9fbf5 Alex Elder 2013-03-14 967
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 968 BUG_ON(pages);
>> 88486957f9fbf5 Alex Elder 2013-03-14 969 max_pages = calc_pages_for(0, (u64)len);
>> 6da2ec56059c3c Kees Cook 2018-06-12 970 pages = kmalloc_array(max_pages,
>> 6da2ec56059c3c Kees Cook 2018-06-12 971 sizeof(*pages),
>> fc2744aa12da71 Yan, Zheng 2013-05-31 972 GFP_NOFS);
>> 88486957f9fbf5 Alex Elder 2013-03-14 973 if (!pages) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 974 from_pool = true;
>> a0102bda5bc099 Jeff Layton 2020-07-30 975 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 976 BUG_ON(!pages);
>> 88486957f9fbf5 Alex Elder 2013-03-14 977 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 978
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 979 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 980 } else if (page->index !=
>> 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 981 (offset + len) >> PAGE_SHIFT) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 982 if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 983 CEPH_OSD_MAX_OPS)) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 984 redirty_page_for_writepage(wbc, page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 985 unlock_page(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 986 break;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 987 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 988
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 989 num_ops++;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 990 offset = (u64)page_offset(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 991 len = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 992 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 993
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 994 /* note position of first page in pvec */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 995 dout("%p will write page %p idx %lu\n",
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 996 inode, page, page->index);
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 997
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 998 if (atomic_long_inc_return(&fsc->writeback_count) >
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 999 CONGESTION_ON_THRESH(
>> 3d14c5d2b6e15c Yehuda Sadeh 2010-04-06 1000 fsc->mount_options->congestion_kb)) {
>> 09dc9fc24ba714 Jan Kara 2017-04-12 1001 set_bdi_congested(inode_to_bdi(inode),
>> 213c99ee0cf17f Sage Weil 2010-08-03 1002 BLK_RW_ASYNC);
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1003 }
>> 2baba25019ec56 Yehuda Sadeh 2009-12-18 1004
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1005
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1006 pages[locked_pages++] = page;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1007 pvec.pages[i] = NULL;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1008
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1009 len += thp_size(page);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1010 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1011
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1012 /* did we get anything? */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1013 if (!locked_pages)
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1014 goto release_pvec_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1015 if (i) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1016 unsigned j, n = 0;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1017 /* shift unused page to beginning of pvec */
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1018 for (j = 0; j < pvec_pages; j++) {
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1019 if (!pvec.pages[j])
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1020 continue;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1021 if (n < j)
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1022 pvec.pages[n] = pvec.pages[j];
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1023 n++;
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1024 }
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1025 pvec.nr = n;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1026
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1027 if (pvec_pages && i == pvec_pages &&
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1028 locked_pages < max_pages) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1029 dout("reached end pvec, trying for more\n");
>> 0713e5f24b7deb Yan, Zheng 2017-08-31 1030 pagevec_release(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1031 goto get_more_pages;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1032 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1033 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1034
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1035 new_request:
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1036 offset = page_offset(pages[0]);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1037 len = wsize;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1038
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1039 req = ceph_osdc_new_request(&fsc->client->osdc,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1040 &ci->i_layout, vino,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1041 offset, &len, 0, num_ops,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1042 CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1043 snapc, ceph_wbc.truncate_seq,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1044 ceph_wbc.truncate_size, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1045 if (IS_ERR(req)) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1046 req = ceph_osdc_new_request(&fsc->client->osdc,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1047 &ci->i_layout, vino,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1048 offset, &len, 0,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1049 min(num_ops,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1050 CEPH_OSD_SLAB_OPS),
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1051 CEPH_OSD_OP_WRITE,
>> 54ea0046b6fe36 Ilya Dryomov 2017-02-11 1052 CEPH_OSD_FLAG_WRITE,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1053 snapc, ceph_wbc.truncate_seq,
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1054 ceph_wbc.truncate_size, true);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1055 BUG_ON(IS_ERR(req));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1056 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1057 BUG_ON(len < page_offset(pages[locked_pages - 1]) +
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1058 thp_size(page) - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1059
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1060 req->r_callback = writepages_finish;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1061 req->r_inode = inode;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1062
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1063 /* Format the osd request message and submit the write */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1064 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1065 data_pages = pages;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1066 op_idx = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1067 for (i = 0; i < locked_pages; i++) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1068 u64 cur_offset = page_offset(pages[i]);
>> 1702e79734104d Jeff Layton 2021-12-07 1069 /*
>> 1702e79734104d Jeff Layton 2021-12-07 1070 * Discontinuity in page range? Ceph can handle that by just passing
>> 1702e79734104d Jeff Layton 2021-12-07 1071 * multiple extents in the write op.
>> 1702e79734104d Jeff Layton 2021-12-07 1072 */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1073 if (offset + len != cur_offset) {
>> 1702e79734104d Jeff Layton 2021-12-07 1074 /* If it's full, stop here */
>> 3fb99d483e614b Yanhu Cao 2017-07-21 1075 if (op_idx + 1 == req->r_num_ops)
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1076 break;
>> 1702e79734104d Jeff Layton 2021-12-07 1077
>> 1702e79734104d Jeff Layton 2021-12-07 1078 /* Kick off an fscache write with what we have so far. */
>> 1702e79734104d Jeff Layton 2021-12-07 1079 ceph_fscache_write_to_cache(inode, offset, len, caching);
>> 1702e79734104d Jeff Layton 2021-12-07 1080
>> 1702e79734104d Jeff Layton 2021-12-07 1081 /* Start a new extent */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1082 osd_req_op_extent_dup_last(req, op_idx,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1083 cur_offset - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1084 dout("writepages got pages at %llu~%llu\n",
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1085 offset, len);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1086 osd_req_op_extent_osd_data_pages(req, op_idx,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1087 data_pages, len, 0,
>> a0102bda5bc099 Jeff Layton 2020-07-30 1088 from_pool, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1089 osd_req_op_extent_update(req, op_idx, len);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1090
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1091 len = 0;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1092 offset = cur_offset;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1093 data_pages = pages + i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1094 op_idx++;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1095 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1096
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1097 set_page_writeback(pages[i]);
>> 1702e79734104d Jeff Layton 2021-12-07 1098 if (caching)
>> 1702e79734104d Jeff Layton 2021-12-07 1099 ceph_set_page_fscache(pages[i]);
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1100 len += thp_size(page);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1101 }
>> 1702e79734104d Jeff Layton 2021-12-07 1102 ceph_fscache_write_to_cache(inode, offset, len, caching);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1103
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1104 if (ceph_wbc.size_stable) {
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1105 len = min(len, ceph_wbc.i_size - offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1106 } else if (i == locked_pages) {
>> e1966b49446a43 Yan, Zheng 2015-06-18 1107 /* writepages_finish() clears writeback pages
>> e1966b49446a43 Yan, Zheng 2015-06-18 1108 * according to the data length, so make sure
>> e1966b49446a43 Yan, Zheng 2015-06-18 1109 * data length covers all locked pages */
>> 8ff2d290c8ce77 Jeff Layton 2021-04-05 1110 u64 min_len = len + 1 - thp_size(page);
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1111 len = get_writepages_data_length(inode, pages[i - 1],
>> 1f934b00e90752 Yan, Zheng 2017-08-30 1112 offset);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1113 len = max(len, min_len);
>> e1966b49446a43 Yan, Zheng 2015-06-18 1114 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1115 dout("writepages got pages at %llu~%llu\n", offset, len);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1116
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1117 osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
>> a0102bda5bc099 Jeff Layton 2020-07-30 1118 0, from_pool, false);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1119 osd_req_op_extent_update(req, op_idx, len);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1120
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1121 BUG_ON(op_idx + 1 != req->r_num_ops);
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1122
>> a0102bda5bc099 Jeff Layton 2020-07-30 1123 from_pool = false;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1124 if (i < locked_pages) {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1125 BUG_ON(num_ops <= req->r_num_ops);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1126 num_ops -= req->r_num_ops;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1127 locked_pages -= i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1128
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1129 /* allocate new pages array for next request */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1130 data_pages = pages;
>> 6da2ec56059c3c Kees Cook 2018-06-12 1131 pages = kmalloc_array(locked_pages, sizeof(*pages),
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1132 GFP_NOFS);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1133 if (!pages) {
>> a0102bda5bc099 Jeff Layton 2020-07-30 1134 from_pool = true;
>> a0102bda5bc099 Jeff Layton 2020-07-30 1135 pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1136 BUG_ON(!pages);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1137 }
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1138 memcpy(pages, data_pages + i,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1139 locked_pages * sizeof(*pages));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1140 memset(data_pages + i, 0,
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1141 locked_pages * sizeof(*pages));
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1142 } else {
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1143 BUG_ON(num_ops != req->r_num_ops);
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1144 index = pages[i - 1]->index + 1;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1145 /* request message now owns the pages array */
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1146 pages = NULL;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1147 }
>> e5975c7c8eb6ae Alex Elder 2013-03-14 1148
>> fac02ddf910814 Arnd Bergmann 2018-07-13 1149 req->r_mtime = inode->i_mtime;
>> 9d6fcb081a4770 Sage Weil 2011-05-12 1150 rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
>> 9d6fcb081a4770 Sage Weil 2011-05-12 1151 BUG_ON(rc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1152 req = NULL;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1153
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1154 wbc->nr_to_write -= i;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1155 if (pages)
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1156 goto new_request;
>> 5b64640cf65be4 Yan, Zheng 2016-01-07 1157
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1158 /*
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1159 * We stop writing back only if we are not doing
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1160 * integrity sync. In case of integrity sync we have to
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1161 * keep going until we have written all the pages
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1162 * we tagged for writeback prior to entering this loop.
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1163 */
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1164 if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE)
>> af9cc401ce7452 Yan, Zheng 2018-03-04 1165 done = true;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1166
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1167 release_pvec_pages:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1168 dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr,
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1169 pvec.nr ? pvec.pages[0] : NULL);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1170 pagevec_release(&pvec);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1171 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1172
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1173 if (should_loop && !done) {
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1174 /* more to do; loop back to beginning of file */
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1175 dout("writepages looping back to beginning of file\n");
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1176 end = start_index - 1; /* OK even when start_index == 0 */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1177
>> f275635ee0b664 Yan, Zheng 2017-09-01 1178 /* to write dirty pages associated with next snapc,
>> f275635ee0b664 Yan, Zheng 2017-09-01 1179 * we need to wait until current writes complete */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1180 if (wbc->sync_mode != WB_SYNC_NONE &&
>> f275635ee0b664 Yan, Zheng 2017-09-01 1181 start_index == 0 && /* all dirty pages were checked */
>> f275635ee0b664 Yan, Zheng 2017-09-01 1182 !ceph_wbc.head_snapc) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1183 struct page *page;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1184 unsigned i, nr;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1185 index = 0;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1186 while ((index <= end) &&
>> f275635ee0b664 Yan, Zheng 2017-09-01 1187 (nr = pagevec_lookup_tag(&pvec, mapping, &index,
>> 67fd707f468142 Jan Kara 2017-11-15 1188 PAGECACHE_TAG_WRITEBACK))) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1189 for (i = 0; i < nr; i++) {
>> f275635ee0b664 Yan, Zheng 2017-09-01 1190 page = pvec.pages[i];
>> f275635ee0b664 Yan, Zheng 2017-09-01 1191 if (page_snap_context(page) != snapc)
>> f275635ee0b664 Yan, Zheng 2017-09-01 1192 continue;
>> f275635ee0b664 Yan, Zheng 2017-09-01 1193 wait_on_page_writeback(page);
>> f275635ee0b664 Yan, Zheng 2017-09-01 1194 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1195 pagevec_release(&pvec);
>> f275635ee0b664 Yan, Zheng 2017-09-01 1196 cond_resched();
>> f275635ee0b664 Yan, Zheng 2017-09-01 1197 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1198 }
>> f275635ee0b664 Yan, Zheng 2017-09-01 1199
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1200 start_index = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1201 index = 0;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1202 goto retry;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1203 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1204
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1205 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1206 mapping->writeback_index = index;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1207
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1208 out:
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1209 ceph_osdc_put_request(req);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1210 ceph_put_snap_context(last_snapc);
>> 2a2d927e35dd8d Yan, Zheng 2017-09-01 1211 dout("writepages dend - startone, rc = %d\n", rc);
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1212 return rc;
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1213 }
>> 1d3576fd10f0d7 Sage Weil 2009-10-06 1214
>>
>> :::::: The code at line 788 was first introduced by commit
>> :::::: 1d3576fd10f0d7a104204267b81cf84a07028dad ceph: address space operations
>>
>> :::::: TO: Sage Weil <sage@newdream.net>
>> :::::: CC: Sage Weil <sage@newdream.net>
>>
>> ---
>> 0-DAY CI Kernel Test Service, Intel Corporation
>> https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-02-10 13:28 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-02-10 12:14 [ceph-client:testing 6/8] fs/ceph/addr.c:788:12: warning: stack frame size (2352) exceeds limit (2048) in 'ceph_writepages_start' kernel test robot
2022-02-10 12:14 ` kernel test robot
2022-02-10 13:01 ` Jeff Layton
2022-02-10 13:01 ` Jeff Layton
2022-02-10 13:28 ` Xiubo Li
2022-02-10 13:28 ` Xiubo Li
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