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| author | Johannes Weiner | 2014-12-11 00:42:42 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2014-12-11 02:41:05 +0100 |
| commit | e8ea14cc6eadfe2ea63e9989e16e62625a2619f8 (patch) | |
| tree | 8109a731e199928c2fd87d3633a56a3251d85245 /mm/page_counter.c | |
| parent | mm: memcontrol: convert reclaim iterator to simple css refcounting (diff) | |
| download | kernel-qcow2-linux-e8ea14cc6eadfe2ea63e9989e16e62625a2619f8.tar.gz kernel-qcow2-linux-e8ea14cc6eadfe2ea63e9989e16e62625a2619f8.tar.xz kernel-qcow2-linux-e8ea14cc6eadfe2ea63e9989e16e62625a2619f8.zip | |
mm: memcontrol: take a css reference for each charged page
Charges currently pin the css indirectly by playing tricks during
css_offline(): user pages stall the offlining process until all of them
have been reparented, whereas kmemcg acquires a keep-alive reference if
outstanding kernel pages are detected at that point.
In preparation for removing all this complexity, make the pinning explicit
and acquire a css references for every charged page.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_counter.c')
0 files changed, 0 insertions, 0 deletions