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| author | Mel Gorman <mel@csn.ul.ie> | 2009-11-12 01:26:17 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-11-12 18:25:56 +0300 |
| commit | 9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210 (patch) | |
| tree | 71ecabae46aa132545ca39dd0da62c483d69c20b /mm/vmscan.c | |
| parent | cc4a6851466039a8a688c843962a05689059ff3b (diff) | |
| download | linux-9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210.tar.xz | |
page allocator: Do not allow interrupts to use ALLOC_HARDER
Commit 341ce06f69abfafa31b9468410a13dbd60e2b237 ("page allocator:
calculate the alloc_flags for allocation only once") altered watermark
logic slightly by allowing rt_tasks that are handling an interrupt to set
ALLOC_HARDER. This patch brings the watermark logic more in line with
2.6.30.
This change results in a reduction of the number high-order GFP_ATOMIC
allocation failures reported. See
http://www.gossamer-threads.com/lists/linux/kernel/1144153
[rientjes@google.com: Spotted the problem]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
0 files changed, 0 insertions, 0 deletions