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| author | David Rientjes | 2013-07-04 00:01:23 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2013-07-04 01:07:26 +0200 |
| commit | ffbdccf5e1facd18b54429a749667fb185c10f20 (patch) | |
| tree | b3c8cf7399bb6493568d02bce307dce45b4ea9d7 /mm/page_io.c | |
| parent | pagemap: prepare to reuse constant bits with page-shift (diff) | |
| download | kernel-qcow2-linux-ffbdccf5e1facd18b54429a749667fb185c10f20.tar.gz kernel-qcow2-linux-ffbdccf5e1facd18b54429a749667fb185c10f20.tar.xz kernel-qcow2-linux-ffbdccf5e1facd18b54429a749667fb185c10f20.zip | |
mm, memcg: don't take task_lock in task_in_mem_cgroup
For processes that have detached their mm's, task_in_mem_cgroup()
unnecessarily takes task_lock() when rcu_read_lock() is all that is
necessary to call mem_cgroup_from_task().
While we're here, switch task_in_mem_cgroup() to return bool.
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_io.c')
0 files changed, 0 insertions, 0 deletions