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authorJiang Biao <jiang.biao2@zte.com.cn>2018-04-18 08:37:18 -0600
committerJens Axboe <axboe@kernel.dk>2018-04-18 08:37:18 -0600
commit946b81da114b8ba5c74bb01e57c0c6eca2bdc801 (patch)
tree5f4adb9a9a46eaee2c142dfc7f76d60abaea07da /lib/genalloc.c
parent0ce9144471de9ee09306ca0127e7cd27521ccc3f (diff)
downloadlinux-946b81da114b8ba5c74bb01e57c0c6eca2bdc801.tar.bz2
blkcg: don't hold blkcg lock when deactivating policy
As described in the comment of blkcg_activate_policy(), *Update of each blkg is protected by both queue and blkcg locks so that holding either lock and testing blkcg_policy_enabled() is always enough for dereferencing policy data.* with queue lock held, there is no need to hold blkcg lock in blkcg_deactivate_policy(). Similar case is in blkcg_activate_policy(), which has removed holding of blkcg lock in commit 4c55f4f9ad3001ac1fefdd8d8ca7641d18558e23. Signed-off-by: Jiang Biao <jiang.biao2@zte.com.cn> Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> CC: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/genalloc.c')
0 files changed, 0 insertions, 0 deletions