提交 c9a3f6d6 编写于 作者: J Jens Axboe 提交者: Linus Torvalds

dm: use unlocked variants of queue flag check/set

dm.c already provides mutual exclusion through ->map_lock.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 a217656c
......@@ -873,13 +873,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q)
q->max_hw_sectors = t->limits.max_hw_sectors;
q->seg_boundary_mask = t->limits.seg_boundary_mask;
q->bounce_pfn = t->limits.bounce_pfn;
/* XXX: the below will probably go bug. must ensure there can be no
* concurrency on queue_flags, and use the unlocked versions...
*/
if (t->limits.no_cluster)
queue_flag_clear(QUEUE_FLAG_CLUSTER, q);
queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
else
queue_flag_set(QUEUE_FLAG_CLUSTER, q);
queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q);
}
......
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