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authorOleg Nesterov <oleg@redhat.com>2014-06-04 16:07:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:03 -0700
commitf87fb599ae4d2a152a93f9821b94f3158146d097 (patch)
tree8b64fc4a17246ab6988d7f09c18ee4f0af6b51e4 /init
parentf7e2f7e896d8b74e92b687f7333721fd7be0f4b5 (diff)
memcg: mm_update_next_owner() should skip kthreads
"Search through everything else" in mm_update_next_owner() can hit a kthread which adopted this "mm" via use_mm(), it should not be used as mm->owner. Add the PF_KTHREAD check. While at it, change this code to use for_each_process_thread() instead of deprecated do_each_thread/while_each_thread. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Peter Chiang <pchiang@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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