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| author | Tomoki Sekiyama <tomoki.sekiyama@hds.com> | 2013-10-15 16:42:19 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-11-08 09:00:13 -0700 |
| commit | 7c8a3679e3d8e9d92d58f282161760a0e247df97 (patch) | |
| tree | 220802e0b80df5b3191359cf09effcfae84718a5 /block/Makefile | |
| parent | eb1c160b22655fd4ec44be732d6594fd1b1e44f4 (diff) | |
| download | lwn-7c8a3679e3d8e9d92d58f282161760a0e247df97.tar.gz lwn-7c8a3679e3d8e9d92d58f282161760a0e247df97.zip | |
elevator: acquire q->sysfs_lock in elevator_change()
Add locking of q->sysfs_lock into elevator_change() (an exported function)
to ensure it is held to protect q->elevator from elevator_init(), even if
elevator_change() is called from non-sysfs paths.
sysfs path (elv_iosched_store) uses __elevator_change(), non-locking
version, as the lock is already taken by elv_iosched_store().
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/Makefile')
0 files changed, 0 insertions, 0 deletions