diff options
| author | Tomoki Sekiyama <tomoki.sekiyama@hds.com> | 2013-10-15 16:42:19 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 07:29:27 -0800 |
| commit | 72b9401c2f5ac465d97969ef7933753642bde8bf (patch) | |
| tree | 8cc1c1de6433edd93ca7bf744b84c4884e3a16e3 /lib/devres.c | |
| parent | 6d53d39270ccd29938dcbd611a44870c63032521 (diff) | |
| download | linux-3.10-72b9401c2f5ac465d97969ef7933753642bde8bf.tar.gz linux-3.10-72b9401c2f5ac465d97969ef7933753642bde8bf.tar.bz2 linux-3.10-72b9401c2f5ac465d97969ef7933753642bde8bf.zip | |
elevator: acquire q->sysfs_lock in elevator_change()
commit 7c8a3679e3d8e9d92d58f282161760a0e247df97 upstream.
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>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/devres.c')
0 files changed, 0 insertions, 0 deletions