From: Mike Rapoport <rppt@linux.vnet.ibm.com> To: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Alexander Viro <viro@zeniv.linux.org.uk>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>, lkml <linux-kernel@vger.kernel.org>, Linux API <linux-api@vger.kernel.org>, criu@openvz.org, Arnd Bergmann <arnd@arndb.de>, Pavel Emelyanov <xemul@virtuozzo.com>, Thomas Gleixner <tglx@linutronix.de>, Josh Triplett <josh@joshtriplett.org>, Jann Horn <jannh@google.com>, Yossi Kuperman <yossiku@il.ibm.com> Subject: Re: [PATCH v3 0/4] vm: add a syscall to map a process memory into a pipe Date: Thu, 23 Nov 2017 08:29:10 +0200 [thread overview] Message-ID: <20171123062909.GB2303@rapoport-lnx> (raw) In-Reply-To: <CAKgNAkhtm0JqxeKXovoXPbApogMsGtMR=1td_NhT3AMv_Ot1Ng@mail.gmail.com> On Wed, Nov 22, 2017 at 09:43:31PM +0100, Michael Kerrisk (man-pages) wrote: > Hi Mike, > > On 22 November 2017 at 20:36, Mike Rapoport <rppt@linux.vnet.ibm.com> wrote: > > Hi, > > > > This patches introduces new process_vmsplice system call that combines > > functionality of process_vm_read and vmsplice. > > > > It allows to map the memory of another process into a pipe, similarly to > > what vmsplice does for its own address space. > > > > The patch 2/4 ("vm: add a syscall to map a process memory into a pipe") > > actually adds the new system call and provides its elaborate description. > > Where is the man page for this new syscall? It's still WIP, I'll send it out soon. > Cheers, > > Michael > > > The patchset is against -mm tree. > > > > v3: minor refactoring to reduce code duplication > > v2: move this syscall under CONFIG_CROSS_MEMORY_ATTACH > > give correct flags to get_user_pages_remote() > > > > Andrei Vagin (3): > > vm: add a syscall to map a process memory into a pipe > > x86: wire up the process_vmsplice syscall > > test: add a test for the process_vmsplice syscall > > > > Mike Rapoport (1): > > fs/splice: introduce pages_to_pipe helper > > > > arch/x86/entry/syscalls/syscall_32.tbl | 1 + > > arch/x86/entry/syscalls/syscall_64.tbl | 2 + > > fs/splice.c | 262 +++++++++++++++++++-- > > include/linux/compat.h | 3 + > > include/linux/syscalls.h | 4 + > > include/uapi/asm-generic/unistd.h | 5 +- > > kernel/sys_ni.c | 2 + > > tools/testing/selftests/process_vmsplice/Makefile | 5 + > > .../process_vmsplice/process_vmsplice_test.c | 188 +++++++++++++++ > > 9 files changed, 450 insertions(+), 22 deletions(-) > > create mode 100644 tools/testing/selftests/process_vmsplice/Makefile > > create mode 100644 tools/testing/selftests/process_vmsplice/process_vmsplice_test.c > > > > -- > > 2.7.4 > > > > -- > Michael Kerrisk > Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ > Linux/UNIX System Programming Training: http://man7.org/training/ > -- Sincerely yours, Mike.
WARNING: multiple messages have this Message-ID (diff)
From: Mike Rapoport <rppt@linux.vnet.ibm.com> To: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Alexander Viro <viro@zeniv.linux.org.uk>, "linux-mm@kvack.org" <linux-mm@kvack.org>, "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>, lkml <linux-kernel@vger.kernel.org>, Linux API <linux-api@vger.kernel.org>, criu@openvz.org, Arnd Bergmann <arnd@arndb.de>, Pavel Emelyanov <xemul@virtuozzo.com>, Thomas Gleixner <tglx@linutronix.de>, Josh Triplett <josh@joshtriplett.org>, Jann Horn <jannh@google.com>, Yossi Kuperman <yossiku@il.ibm.com> Subject: Re: [PATCH v3 0/4] vm: add a syscall to map a process memory into a pipe Date: Thu, 23 Nov 2017 08:29:10 +0200 [thread overview] Message-ID: <20171123062909.GB2303@rapoport-lnx> (raw) In-Reply-To: <CAKgNAkhtm0JqxeKXovoXPbApogMsGtMR=1td_NhT3AMv_Ot1Ng@mail.gmail.com> On Wed, Nov 22, 2017 at 09:43:31PM +0100, Michael Kerrisk (man-pages) wrote: > Hi Mike, > > On 22 November 2017 at 20:36, Mike Rapoport <rppt@linux.vnet.ibm.com> wrote: > > Hi, > > > > This patches introduces new process_vmsplice system call that combines > > functionality of process_vm_read and vmsplice. > > > > It allows to map the memory of another process into a pipe, similarly to > > what vmsplice does for its own address space. > > > > The patch 2/4 ("vm: add a syscall to map a process memory into a pipe") > > actually adds the new system call and provides its elaborate description. > > Where is the man page for this new syscall? It's still WIP, I'll send it out soon. > Cheers, > > Michael > > > The patchset is against -mm tree. > > > > v3: minor refactoring to reduce code duplication > > v2: move this syscall under CONFIG_CROSS_MEMORY_ATTACH > > give correct flags to get_user_pages_remote() > > > > Andrei Vagin (3): > > vm: add a syscall to map a process memory into a pipe > > x86: wire up the process_vmsplice syscall > > test: add a test for the process_vmsplice syscall > > > > Mike Rapoport (1): > > fs/splice: introduce pages_to_pipe helper > > > > arch/x86/entry/syscalls/syscall_32.tbl | 1 + > > arch/x86/entry/syscalls/syscall_64.tbl | 2 + > > fs/splice.c | 262 +++++++++++++++++++-- > > include/linux/compat.h | 3 + > > include/linux/syscalls.h | 4 + > > include/uapi/asm-generic/unistd.h | 5 +- > > kernel/sys_ni.c | 2 + > > tools/testing/selftests/process_vmsplice/Makefile | 5 + > > .../process_vmsplice/process_vmsplice_test.c | 188 +++++++++++++++ > > 9 files changed, 450 insertions(+), 22 deletions(-) > > create mode 100644 tools/testing/selftests/process_vmsplice/Makefile > > create mode 100644 tools/testing/selftests/process_vmsplice/process_vmsplice_test.c > > > > -- > > 2.7.4 > > > > -- > Michael Kerrisk > Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ > Linux/UNIX System Programming Training: http://man7.org/training/ > -- Sincerely yours, Mike. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-11-23 6:29 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-11-22 19:36 [PATCH v3 0/4] vm: add a syscall to map a process memory into a pipe Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-22 19:36 ` [PATCH v3 1/4] fs/splice: introduce pages_to_pipe helper Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-22 19:36 ` [PATCH v3 2/4] vm: add a syscall to map a process memory into a pipe Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-22 19:36 ` [PATCH v3 3/4] x86: wire up the process_vmsplice syscall Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-22 19:36 ` [PATCH v3 4/4] test: add a test for " Mike Rapoport 2017-11-22 19:36 ` Mike Rapoport 2017-11-23 8:01 ` Greg KH 2017-11-23 8:01 ` Greg KH 2017-11-23 8:01 ` Greg KH 2017-11-23 14:07 ` Mike Rapoport 2017-11-23 14:07 ` Mike Rapoport 2017-11-22 20:43 ` [PATCH v3 0/4] vm: add a syscall to map a process memory into a pipe Michael Kerrisk (man-pages) 2017-11-22 20:43 ` Michael Kerrisk (man-pages) 2017-11-23 6:29 ` Mike Rapoport [this message] 2017-11-23 6:29 ` Mike Rapoport
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