| commit | e2c55dc87f4a398b9c4dcc702dbc23a07fe14e23 | |
| author | Mel Gorman <mel@csn.ul.ie> | |
| Tue, 16 Oct 2007 08:25:50 +0000 (16 01:25 -0700) | ||
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | |
| Tue, 16 Oct 2007 16:42:59 +0000 (16 09:42 -0700) | ||
| tree | b3811de298d4c98c4765db4af3838428553b5382 | treesnapshot (tar.gz zip) |
| parent | b92a6edd4b77a8794adb497280beea5df5e59a14 | commitdiff |
Drain per-cpu lists when high-order allocations fail
Per-cpu pages can accidentally cause fragmentation because they are free, but
pinned pages in an otherwise contiguous block. When this patch is applied,
the per-cpu caches are drained after the direct-reclaim is entered if the
requested order is greater than 0. It simply reuses the code used by suspend
and hotplug.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Per-cpu pages can accidentally cause fragmentation because they are free, but
pinned pages in an otherwise contiguous block. When this patch is applied,
the per-cpu caches are drained after the direct-reclaim is entered if the
requested order is greater than 0. It simply reuses the code used by suspend
and hotplug.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| mm/page_alloc.c | diffblobblamehistory |