| commit | 1ca69c4bc4b1ef889861db39f325901eadbf9497 | [log] [tgz] |
|---|---|---|
| author | NeilBrown <neilb@suse.de> | Thu Oct 11 13:37:33 2012 +1100 |
| committer | NeilBrown <neilb@suse.de> | Thu Oct 11 13:37:33 2012 +1100 |
| tree | a4c83843fc630c42853e1a5ecc51dff5ab3ef54f | |
| parent | 4ed8731d8e6bd2a88a30697fbf4f7e6e979a6c46 [diff] |
md: avoid taking the mutex on some ioctls. Some ioctls don't need to take the mutex and doing so can cause a delay as it is held during super-block update. So move those ioctls out of the mutex and rely on rcu locking to ensure we don't access stale data. Signed-off-by: NeilBrown <neilb@suse.de>