Eric Lee / smarc-ti-linux-kernel

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Commit b3b0bd3970bbe5c770a3f0764c4da9111605ad47

Authored by Vladimir Davydov
Committed by Jiri Slaby
1 parent 5a6ad555bd
Exists in ti-linux-3.12.y and in 2 other branches newt-ti-linux-3.12.y, smarc-ti-linux-3.12.y

mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim 

commit 99120b772b52853f9a2b829a21dd44d9b20558f1 upstream.

When direct reclaim is executed by a process bound to a set of NUMA
nodes, we should scan only those nodes when possible, but currently we
will scan kmem from all online nodes even if the kmem shrinker is NUMA
aware.  That said, binding a process to a particular NUMA node won't
prevent it from shrinking inode/dentry caches from other nodes, which is
not good.  Fix this.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Glauber Costa <glommer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff

... ... @@ -2424,8 +2424,8 @@
2424 2424 unsigned long lru_pages = 0;
2425 2425  
2426 2426 nodes_clear(shrink->nodes_to_scan);
2427   - for_each_zone_zonelist(zone, z, zonelist,
2428   - gfp_zone(sc->gfp_mask)) {
  2427 + for_each_zone_zonelist_nodemask(zone, z, zonelist,
  2428 + gfp_zone(sc->gfp_mask), sc->nodemask) {
2429 2429 if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
2430 2430 continue;
2431 2431