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| author | Mel Gorman <mgorman@suse.de> | 2012-01-13 02:19:33 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-13 05:13:09 +0100 |
| commit | 7335084d446b83cbcb15da80497d03f0c1dc9e21 (patch) | |
| tree | 1bc34f3cc12a4f6fce19b8eeaed52dc3e4202b5b /mm/migrate.c | |
| parent | mm: vmscan: check if we isolated a compound page during lumpy scan (diff) | |
| download | linux-7335084d446b83cbcb15da80497d03f0c1dc9e21.tar.xz linux-7335084d446b83cbcb15da80497d03f0c1dc9e21.zip | |
mm: vmscan: do not OOM if aborting reclaim to start compaction
During direct reclaim it is possible that reclaim will be aborted so that
compaction can be attempted to satisfy a high-order allocation. If this
decision is made before any pages are reclaimed, it is possible that 0 is
returned to the page allocator potentially triggering an OOM. This has
not been observed but it is a possibility so this patch addresses it.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Andy Isaacson <adi@hexapodia.org>
Cc: Nai Xia <nai.xia@gmail.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
0 files changed, 0 insertions, 0 deletions