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| author | Mel Gorman <mel@csn.ul.ie> | 2009-11-11 14:26:17 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-08 10:21:22 -0800 |
| commit | 88b117ce4ae1a68c5be558c182b1bea1967cac73 (patch) | |
| tree | 129b9514a149a61eb574b1ba90979b158e208264 /Documentation/crypto | |
| parent | 280292d5ed25f6799d4f301dea43d1c0a3c6ad68 (diff) | |
page allocator: Do not allow interrupts to use ALLOC_HARDER
commit 9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/crypto')
0 files changed, 0 insertions, 0 deletions