tree cebd9474333db6965fe6af7cc3f652d3091b658b
parent cd38b115d5ad79b0100ac6daa103c4fe2c50a913
author Mel Gorman <mgorman@suse.de> 1311639150 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1311652630 -0700

mm: page allocator: reconsider zones for allocation after direct reclaim

With zone_reclaim_mode enabled, it's possible for zones to be considered
full in the zonelist_cache so they are skipped in the future.  If the
process enters direct reclaim, the ZLC may still consider zones to be full
even after reclaiming pages.  Reconsider all zones for allocation if
direct reclaim returns successfully.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>