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authorMel Gorman <mgorman@suse.de>2014-06-05 03:10:06 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-05 03:54:08 +0400
commit800a1e750c7b04c2aa2459afca77e936e01c0029 (patch)
tree98324d1708bfe2e7730a061b75e9fcfe12dab3ec
parent65bb371984d6a2c909244eb749e482bb40b72e36 (diff)
downloadlinux-800a1e750c7b04c2aa2459afca77e936e01c0029.tar.xz
mm: page_alloc: do not treat a zone that cannot be used for dirty pages as "full"
If a zone cannot be used for a dirty page then it gets marked "full" which is cached in the zlc and later potentially skipped by allocation requests that have nothing to do with dirty zones. Signed-off-by: Mel Gorman <mgorman@suse.de> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/page_alloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8e766241cf56..b4381eaee715 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1967,7 +1967,7 @@ zonelist_scan:
*/
if ((alloc_flags & ALLOC_WMARK_LOW) &&
(gfp_mask & __GFP_WRITE) && !zone_dirty_ok(zone))
- goto this_zone_full;
+ continue;
mark = zone->watermark[alloc_flags & ALLOC_WMARK_MASK];
if (!zone_watermark_ok(zone, order, mark,