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authorDavid Rientjes <rientjes@google.com>2017-04-07 16:05:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-04-08 00:47:49 -0700
commit460bcec84e11c75122ace5976214abbc596eb91b (patch)
treed73d64a305d28d8bf9a0389b021aa543f18e223b /mm/swap_cgroup.c
parente11f8b7b6c4ea13bf8af6b8f42b45e15b554a92b (diff)
downloadlinux-stericsson-460bcec84e11c75122ace5976214abbc596eb91b.tar.gz
mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()
We got need_resched() warnings in swap_cgroup_swapoff() because swap_cgroup_ctrl[type].length is particularly large. Reschedule when needed. Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1704061315270.80559@chino.kir.corp.google.com Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap_cgroup.c')
-rw-r--r--mm/swap_cgroup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
index 310ac0b8f974..ac6318a064d3 100644
--- a/mm/swap_cgroup.c
+++ b/mm/swap_cgroup.c
@@ -201,6 +201,8 @@ void swap_cgroup_swapoff(int type)
struct page *page = map[i];
if (page)
__free_page(page);
+ if (!(i % SWAP_CLUSTER_MAX))
+ cond_resched();
}
vfree(map);
}