diff options
| author | Vladimir Davydov | 2016-07-27 00:24:30 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2016-07-27 01:19:19 +0200 |
| commit | 3e79ec7ddc33e5c69c20ce7f768d0e5c8b824f69 (patch) | |
| tree | a53369a4d3b1cdc06be5b2e54ec7b47a4498ad86 /fs/pipe.c | |
| parent | mm: memcontrol: teach uncharge_list to deal with kmem pages (diff) | |
| download | kernel-qcow2-linux-3e79ec7ddc33e5c69c20ce7f768d0e5c8b824f69.tar.gz kernel-qcow2-linux-3e79ec7ddc33e5c69c20ce7f768d0e5c8b824f69.tar.xz kernel-qcow2-linux-3e79ec7ddc33e5c69c20ce7f768d0e5c8b824f69.zip | |
arch: x86: charge page tables to kmemcg
Page tables can bite a relatively big chunk off system memory and their
allocations are easy to trigger from userspace, so they should be
accounted to kmemcg.
This patch marks page table allocations as __GFP_ACCOUNT for x86. Note
we must not charge allocations of kernel page tables, because they can
be shared among processes from different cgroups so accounting them to a
particular one can pin other cgroups for indefinitely long. So we clear
__GFP_ACCOUNT flag if a page table is allocated for the kernel.
Link: http://lkml.kernel.org/r/7d5c54f6a2bcbe76f03171689440003d87e6c742.1464079538.git.vdavydov@virtuozzo.com
Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/pipe.c')
0 files changed, 0 insertions, 0 deletions