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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>
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@ -1195,8 +1195,11 @@ static void activate_path(struct work_struct *work)
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struct pgpath *pgpath =
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container_of(work, struct pgpath, activate_path.work);
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scsi_dh_activate(bdev_get_queue(pgpath->path.dev->bdev),
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pg_init_done, pgpath);
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if (pgpath->is_active)
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scsi_dh_activate(bdev_get_queue(pgpath->path.dev->bdev),
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pg_init_done, pgpath);
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else
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pg_init_done(pgpath, SCSI_DH_DEV_OFFLINED);
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}
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static int noretry_error(int error)
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