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| author | Hong Zhiguo <zhiguohong@tencent.com> | 2013-11-20 10:35:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-11 22:36:27 -0800 |
| commit | 950cda7f8e2bc6f182a2640817970166c55240db (patch) | |
| tree | e770f6d656a19cb92fdb0e6ad0f9b669d03d3a97 /Documentation/sh | |
| parent | c52348079702c2fa0fcc74e2ac5ba81c70a47fbc (diff) | |
Update of blkg_stat and blkg_rwstat may happen in bh context. While u64_stats_fetch_retry is only preempt_disable on 32bit UP system. This is not enough to avoid preemption by bh and may read strange 64 bit value.
commit 2c575026fae6e63771bd2a4c1d407214a8096a89 upstream.
Signed-off-by: Hong Zhiguo <zhiguohong@tencent.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/sh')
0 files changed, 0 insertions, 0 deletions