diff options
Diffstat (limited to 'drivers/block/ll_rw_blk.c')
| -rw-r--r-- | drivers/block/ll_rw_blk.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c index cd8cf302068c..808390c74200 100644 --- a/drivers/block/ll_rw_blk.c +++ b/drivers/block/ll_rw_blk.c @@ -968,8 +968,7 @@ EXPORT_SYMBOL(blk_queue_end_tag); int blk_queue_start_tag(request_queue_t *q, struct request *rq) { struct blk_queue_tag *bqt = q->queue_tags; - unsigned long *map = bqt->tag_map; - int tag = 0; + int tag; if (unlikely((rq->flags & REQ_QUEUED))) { printk(KERN_ERR @@ -978,14 +977,10 @@ int blk_queue_start_tag(request_queue_t *q, struct request *rq) BUG(); } - for (map = bqt->tag_map; *map == -1UL; map++) { - tag += BLK_TAGS_PER_LONG; - - if (tag >= bqt->max_depth) - return 1; - } + tag = find_first_zero_bit(bqt->tag_map, bqt->max_depth); + if (tag >= bqt->max_depth) + return 1; - tag += ffz(*map); __set_bit(tag, bqt->tag_map); rq->flags |= REQ_QUEUED; |