diff options
| author | GregorKopka <[email protected]> | 2013-09-19 16:42:17 +0200 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2013-09-25 15:29:45 -0700 |
| commit | f9f3f1ef983e987a2e09a49c3684405561fed634 (patch) | |
| tree | d7c90d355ed2cf4e6c5f7f1de5ce59669e7ca75e /module/zfs/spa_misc.c | |
| parent | 77831e17385ba822fe70436d862c0e14df5d67b2 (diff) | |
Removing unneeded mutex for reading vq_pending_tree size
Locking mutex &vq->vq_lock in vdev_mirror_pending is unneeded:
* no data is modified
* only vq_pending_tree is read
* in case garbage is returned (eg. vq_pending_tree being updated
while the read is made) the worst case would be that a single
read could be queued on a mirror side which more busy than thought
The benefit of this change is streamlining of the code path since
it is taken for *every* mirror member on *every* read.
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #1739
Diffstat (limited to 'module/zfs/spa_misc.c')
0 files changed, 0 insertions, 0 deletions