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authorMel Gorman <mel@csn.ul.ie>2009-11-11 14:26:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-11-12 07:25:56 -0800
commit9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210 (patch)
tree71ecabae46aa132545ca39dd0da62c483d69c20b /mm/init-mm.c
parentcc4a6851466039a8a688c843962a05689059ff3b (diff)
downloadlinux-9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210.tar.bz2
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/init-mm.c')
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