mm, lockdep: annotate reclaim context to zone reclaim too
authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Fri, 5 Mar 2010 21:41:47 +0000 (13:41 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 6 Mar 2010 19:26:24 +0000 (11:26 -0800)
commit76ca542d880ebe59a7a03c1597e73e1ded271857
treed5e1a5dc88150ccbfeba811769ac066021b3041b
parent84b18490d1f1bc7ed5095c929f78bc002eb70f26
mm, lockdep: annotate reclaim context to zone reclaim too

Commit cf40bd16fd ("lockdep: annotate reclaim context") introduced reclaim
context annotation.  But it didn't annotate zone reclaim.  This patch do
it.

The point is, commit cf40bd16fd annotate __alloc_pages_direct_reclaim but
zone-reclaim doesn't use __alloc_pages_direct_reclaim.

current call graph is

__alloc_pages_nodemask
   get_page_from_freelist
       zone_reclaim()
   __alloc_pages_slowpath
       __alloc_pages_direct_reclaim
           try_to_free_pages

Actually, if zone_reclaim_mode=1, VM never call
__alloc_pages_direct_reclaim in usual VM pressure.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/vmscan.c