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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/blk-settings.c | |
| parent | elevator: Fix a race in elevator switching and md device initialization (diff) | |
| download | linux-7c8a3679e3d8e9d92d58f282161760a0e247df97.tar.gz linux-7c8a3679e3d8e9d92d58f282161760a0e247df97.tar.bz2 linux-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/blk-settings.c')
0 files changed, 0 insertions, 0 deletions