diff options
author | Johannes Weiner | 2014-08-06 16:05:44 -0700 |
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committer | Linus Torvalds | 2014-08-06 18:01:17 -0700 |
commit | 06b078fc065fe1fe7097675c8ee416aa2ef94fb3 (patch) | |
tree | 749a33193bae4b45994df23e67f4656d70eceeb9 /mm/huge_memory.c | |
parent | 6539cc053869bd32a2db731b215b7c73b11f68d3 (diff) |
mm: memcontrol: rearrange charging fast path
The charging path currently starts out with OOM condition checks when
OOM is the rarest possible case.
Rearrange this code to run OOM/task dying checks only after trying the
percpu charge and the res_counter charge and bail out before entering
reclaim. Attempting a charge does not hurt an (oom-)killed task as much
as every charge attempt having to check OOM conditions. Also, only
check __GFP_NOFAIL when the charge would actually fail.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
0 files changed, 0 insertions, 0 deletions