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| author | Mel Gorman <mgorman@suse.de> | 2014-08-07 01:07:20 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-07 03:01:20 +0200 |
| commit | f7b5d647946aae1647bf5cd26c16b3a793c1ac49 (patch) | |
| tree | 6dc945631424f22b8044985d15fd949fc45e711a /mm | |
| parent | mm: vmscan: only update per-cpu thresholds for online CPU (diff) | |
| download | linux-f7b5d647946aae1647bf5cd26c16b3a793c1ac49.tar.xz linux-f7b5d647946aae1647bf5cd26c16b3a793c1ac49.zip | |
mm: page_alloc: abort fair zone allocation policy when remotes nodes are encountered
The purpose of numa_zonelist_order=zone is to preserve lower zones for
use with 32-bit devices. If locality is preferred then the
numa_zonelist_order=node policy should be used.
Unfortunately, the fair zone allocation policy overrides this by
skipping zones on remote nodes until the lower one is found. While this
makes sense from a page aging and performance perspective, it breaks the
expected zonelist policy. This patch restores the expected behaviour
for zone-list ordering.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index daa016063793..6e5e8f762532 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1965,7 +1965,7 @@ zonelist_scan: */ if (alloc_flags & ALLOC_FAIR) { if (!zone_local(preferred_zone, zone)) - continue; + break; if (zone_page_state(zone, NR_ALLOC_BATCH) <= 0) continue; } |