mm, vmscan: move lru_lock to the node
authorMel Gorman <mgorman@techsingularity.net>
Thu, 28 Jul 2016 22:45:28 +0000 (15:45 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 28 Jul 2016 23:07:41 +0000 (16:07 -0700)
commita52633d8e9c35832f1409dc5fa166019048a3f1f
tree489be85b88b8dc0749747d603448bb3669db0d14
parent75ef7184053989118d3814c558a9af62e7376a58
mm, vmscan: move lru_lock to the node

Node-based reclaim requires node-based LRUs and locking.  This is a
preparation patch that just moves the lru_lock to the node so later
patches are easier to review.  It is a mechanical change but note this
patch makes contention worse because the LRU lock is hotter and direct
reclaim and kswapd can contend on the same lock even when reclaiming
from different zones.

Link: http://lkml.kernel.org/r/1467970510-21195-3-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 files changed:
Documentation/cgroup-v1/memcg_test.txt
Documentation/cgroup-v1/memory.txt
include/linux/mm_types.h
include/linux/mmzone.h
mm/compaction.c
mm/filemap.c
mm/huge_memory.c
mm/memcontrol.c
mm/mlock.c
mm/page_alloc.c
mm/page_idle.c
mm/rmap.c
mm/swap.c
mm/vmscan.c