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| author | Johannes Weiner <hannes@cmpxchg.org> | 2011-01-20 14:44:31 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-20 17:02:06 -0800 |
| commit | 713735b4233fad3ae35b5cad656baa41413887ca (patch) | |
| tree | bba0310f23fb911106e04d75eebe1c6ee7e8d423 /kernel/smp.c | |
| parent | 2550326ac7a062fdfc204f9a3b98bdb9179638fc (diff) | |
| download | op-kernel-dev-713735b4233fad3ae35b5cad656baa41413887ca.zip op-kernel-dev-713735b4233fad3ae35b5cad656baa41413887ca.tar.gz | |
memcg: correctly order reading PCG_USED and pc->mem_cgroup
The placement of the read-side barrier is confused: the writer first
sets pc->mem_cgroup, then PCG_USED. The read-side barrier has to be
between testing PCG_USED and reading pc->mem_cgroup.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/smp.c')
0 files changed, 0 insertions, 0 deletions
