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| author | Nick Piggin <npiggin@suse.de> | 2008-04-29 14:48:33 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-04-29 14:48:33 +0200 |
| commit | 75ad23bc0fcb4f992a5d06982bf0857ab1738e9e (patch) | |
| tree | 8668ef63b1f420252ae41aed9e13737d49fd8054 /block/blk-tag.c | |
| parent | 68154e90c9d1492d570671ae181d9a8f8530da55 (diff) | |
| download | linux-75ad23bc0fcb4f992a5d06982bf0857ab1738e9e.tar.gz linux-75ad23bc0fcb4f992a5d06982bf0857ab1738e9e.tar.bz2 linux-75ad23bc0fcb4f992a5d06982bf0857ab1738e9e.zip | |
block: make queue flags non-atomic
We can save some atomic ops in the IO path, if we clearly define
the rules of how to modify the queue flags.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-tag.c')
| -rw-r--r-- | block/blk-tag.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/blk-tag.c b/block/blk-tag.c index 4780a46ce234..e176ddbe599e 100644 --- a/block/blk-tag.c +++ b/block/blk-tag.c @@ -70,7 +70,7 @@ void __blk_queue_free_tags(struct request_queue *q) __blk_free_tags(bqt); q->queue_tags = NULL; - q->queue_flags &= ~(1 << QUEUE_FLAG_QUEUED); + queue_flag_clear(QUEUE_FLAG_QUEUED, q); } /** @@ -98,7 +98,7 @@ EXPORT_SYMBOL(blk_free_tags); **/ void blk_queue_free_tags(struct request_queue *q) { - clear_bit(QUEUE_FLAG_QUEUED, &q->queue_flags); + queue_flag_clear(QUEUE_FLAG_QUEUED, q); } EXPORT_SYMBOL(blk_queue_free_tags); @@ -188,7 +188,7 @@ int blk_queue_init_tags(struct request_queue *q, int depth, rc = blk_queue_resize_tags(q, depth); if (rc) return rc; - set_bit(QUEUE_FLAG_QUEUED, &q->queue_flags); + queue_flag_set(QUEUE_FLAG_QUEUED, q); return 0; } else atomic_inc(&tags->refcnt); @@ -197,7 +197,7 @@ int blk_queue_init_tags(struct request_queue *q, int depth, * assign it, all done */ q->queue_tags = tags; - q->queue_flags |= (1 << QUEUE_FLAG_QUEUED); + queue_flag_set(QUEUE_FLAG_QUEUED, q); INIT_LIST_HEAD(&q->tag_busy_list); return 0; fail: |