Be more agressive about stealing when MIGRATE_RECLAIMABLE allocations fallback

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MIGRATE_RECLAIMABLE allocations tend to be very bursty in nature like when
updatedb starts.  It is likely this will occur in situations where MAX_ORDER
blocks of pages are not free.  This means that updatedb can scatter
MIGRATE_RECLAIMABLE pages throughout the address space.  This patch is more
agressive about stealing blocks of pages for MIGRATE_RECLAIMABLE.

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>

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Mel Gorman 2007-10-16 01:25:55 -07:00 • committed by Linus Torvalds

parent 5adc5be7cd

commit 46dafbca2b

1 changed files with 15 additions and 3 deletions

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18

mm/page_alloc.c

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