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| author | Hannes Reinecke <hare@suse.de> | 2014-02-28 15:33:49 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2014-03-27 16:56:25 -0400 |
| commit | 3a0175096423856d145e210527271c9eec188a5f (patch) | |
| tree | 01ef8a823a28a27f9c82e3b167e2963097fc47d6 /drivers/md | |
| parent | 9bf59a611a5eb479f321fae34adc9f948de0a42f (diff) | |
| download | linux-3a0175096423856d145e210527271c9eec188a5f.tar.gz | |
dm-mpath: do not activate failed paths
activate_path() is run without a lock, so the path might be set to failed before activate_path() had a chance to run. This patch add a check for ->active in activate_path() to avoid unnecessary overhead by calling functions which are known to be failing. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index e7d80baf8d69..b1fb01efd56c 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1195,8 +1195,11 @@ static void activate_path(struct work_struct *work) struct pgpath *pgpath = container_of(work, struct pgpath, activate_path.work); - scsi_dh_activate(bdev_get_queue(pgpath->path.dev->bdev), - pg_init_done, pgpath); + if (pgpath->is_active) + scsi_dh_activate(bdev_get_queue(pgpath->path.dev->bdev), + pg_init_done, pgpath); + else + pg_init_done(pgpath, SCSI_DH_DEV_OFFLINED); } static int noretry_error(int error) |