From: Topi Miettinen <toiwoton@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Topi Miettinen <toiwoton@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
Alexander Viro <viro@zeniv.linux.org.uk>,
Michal Hocko <mhocko@suse.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Cyrill Gorcunov <gorcunov@openvz.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Mateusz Guzik <mguzik@redhat.com>,
John Stultz <john.stultz@linaro.org>,
Ben Segall <bsegall@google.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Oleg Nesterov <oleg@redhat.com>,
Chen Gang <gang.chen.5i5j@gmail.com>,
Konstantin Khlebnikov <koct9i@gmail.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
linux-fsdevel@vger.kernel.org (open list:FILESYSTEMS (VFS and
infrastructure)),
linux-mm@kvack.org (open list:MEMORY MANAGEMENT)
Subject: [RFC 08/18] limits: track RLIMIT_DATA actual max
Date: Mon, 13 Jun 2016 22:44:15 +0300 [thread overview]
Message-ID: <1465847065-3577-9-git-send-email-toiwoton@gmail.com> (raw)
In-Reply-To: <1465847065-3577-1-git-send-email-toiwoton@gmail.com>
Track maximum size of data VM, presented in /proc/self/limits.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
---
arch/x86/ia32/ia32_aout.c | 1 +
fs/binfmt_aout.c | 1 +
fs/binfmt_flat.c | 1 +
kernel/sys.c | 2 ++
mm/mmap.c | 6 +++++-
5 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index cb26f18..8a7d502 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -398,6 +398,7 @@ beyond_if:
regs->r8 = regs->r9 = regs->r10 = regs->r11 =
regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
set_fs(USER_DS);
+ bump_limit(RLIMIT_DATA, ex.a_data + ex.a_bss);
return 0;
}
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index ae1b540..86c6548 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -330,6 +330,7 @@ beyond_if:
regs->gp = ex.a_gpvalue;
#endif
start_thread(regs, ex.a_entry, current->mm->start_stack);
+ bump_limit(RLIMIT_DATA, ex.a_data + ex.a_bss);
return 0;
}
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index caf9e39..e309dad 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -792,6 +792,7 @@ static int load_flat_file(struct linux_binprm * bprm,
libinfo->lib_list[id].start_brk) + /* start brk */
stack_len);
+ bump_limit(RLIMIT_DATA, data_len + bss_len);
return 0;
err:
return ret;
diff --git a/kernel/sys.c b/kernel/sys.c
index 89d5be4..6629f6f 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1896,6 +1896,8 @@ static int prctl_set_mm_map(int opt, const void __user *addr, unsigned long data
if (prctl_map.auxv_size)
memcpy(mm->saved_auxv, user_auxv, sizeof(user_auxv));
+ bump_limit(RLIMIT_DATA, mm->end_data - mm->start_data);
+
up_write(&mm->mmap_sem);
return 0;
}
diff --git a/mm/mmap.c b/mm/mmap.c
index de2c176..61867de 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -228,6 +228,8 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
goto out;
set_brk:
+ bump_rlimit(RLIMIT_DATA, (brk - mm->start_brk) +
+ (mm->end_data - mm->start_data));
mm->brk = brk;
populate = newbrk > oldbrk && (mm->def_flags & VM_LOCKED) != 0;
up_write(&mm->mmap_sem);
@@ -2924,8 +2926,10 @@ void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages)
mm->exec_vm += npages;
else if (is_stack_mapping(flags))
mm->stack_vm += npages;
- else if (is_data_mapping(flags))
+ else if (is_data_mapping(flags)) {
mm->data_vm += npages;
+ bump_rlimit(RLIMIT_DATA, mm->data_vm << PAGE_SHIFT);
+ }
}
static int special_mapping_fault(struct vm_area_struct *vma,
--
2.8.1
next prev parent reply other threads:[~2016-06-13 19:47 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 19:44 [RFC 00/18] Present useful limits to user Topi Miettinen
2016-06-13 19:44 ` [RFC 01/18] capabilities: track actually used capabilities Topi Miettinen
2016-06-13 20:32 ` Andy Lutomirski
2016-06-13 20:45 ` Topi Miettinen
2016-06-13 21:12 ` Andy Lutomirski
2016-06-13 21:48 ` Topi Miettinen
2016-06-13 19:44 ` [RFC 02/18] cgroup_pids: track maximum pids Topi Miettinen
2016-06-13 21:12 ` Tejun Heo
2016-06-13 21:29 ` Topi Miettinen
2016-06-13 21:33 ` Tejun Heo
2016-06-13 21:59 ` Topi Miettinen
2016-06-13 22:09 ` Tejun Heo
2016-07-17 20:11 ` Topi Miettinen
2016-07-19 1:09 ` Tejun Heo
2016-07-19 16:59 ` Topi Miettinen
2016-07-19 18:13 ` Tejun Heo
2016-06-13 19:44 ` [RFC 03/18] memcontrol: present maximum used memory also for cgroup-v2 Topi Miettinen
2016-06-14 7:01 ` Michal Hocko
2016-06-14 15:47 ` Topi Miettinen
2016-06-14 16:04 ` Johannes Weiner
2016-06-14 17:15 ` Topi Miettinen
2016-06-16 10:27 ` Michal Hocko
2016-06-13 19:44 ` [RFC 04/18] device_cgroup: track and present accessed devices Topi Miettinen
2016-06-17 15:22 ` Serge E. Hallyn
2016-06-13 19:44 ` [RFC 05/18] limits: track and present RLIMIT_NOFILE actual max Topi Miettinen
2016-06-13 20:40 ` Andy Lutomirski
2016-06-13 21:13 ` Topi Miettinen
2016-06-13 21:16 ` Andy Lutomirski
2016-06-14 15:21 ` Topi Miettinen
2016-06-13 19:44 ` [RFC 06/18] limits: present RLIMIT_CPU and RLIMIT_RTTIMER current status Topi Miettinen
2016-06-14 9:14 ` Alexey Dobriyan
2016-06-13 19:44 ` [RFC 07/18] limits: track RLIMIT_FSIZE actual max Topi Miettinen
2016-06-13 19:44 ` Topi Miettinen [this message]
2016-06-13 19:44 ` [RFC 09/18] limits: track RLIMIT_CORE " Topi Miettinen
2016-06-13 19:44 ` [RFC 10/18] limits: track RLIMIT_STACK " Topi Miettinen
2016-06-13 19:44 ` [RFC 11/18] limits: track and present RLIMIT_NPROC " Topi Miettinen
2016-06-13 22:27 ` Jann Horn
2016-06-14 15:40 ` Topi Miettinen
2016-06-14 23:15 ` Jann Horn
2016-06-13 19:44 ` [RFC 13/18] limits: track RLIMIT_AS " Topi Miettinen
2016-06-13 19:44 ` [RFC 14/18] limits: track RLIMIT_SIGPENDING " Topi Miettinen
2016-06-14 14:50 ` Oleg Nesterov
2016-06-14 15:51 ` Topi Miettinen
2016-06-13 19:44 ` [RFC 15/18] limits: track RLIMIT_MSGQUEUE " Topi Miettinen
2016-06-17 19:52 ` Doug Ledford
2016-06-13 19:44 ` [RFC 16/18] limits: track RLIMIT_NICE " Topi Miettinen
2016-06-13 19:44 ` [RFC 17/18] limits: track RLIMIT_RTPRIO " Topi Miettinen
2016-06-13 19:44 ` [RFC 18/18] proc: present VM_LOCKED memory in /proc/self/maps Topi Miettinen
2016-06-13 20:43 ` Kees Cook
2016-06-13 20:52 ` Topi Miettinen
2016-06-14 19:03 ` [RFC 00/18] Present useful limits to user Konstantin Khlebnikov
2016-06-14 19:46 ` Topi Miettinen
2016-06-15 14:47 ` Austin S. Hemmelgarn
2016-06-18 14:45 ` Konstantin Khlebnikov
2016-06-19 6:38 ` Topi Miettinen
2016-06-20 17:37 ` Austin S. Hemmelgarn
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