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| author | Christoph Hellwig <hch@infradead.org> | 2013-10-04 06:49:11 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-10-25 11:55:59 +0100 |
| commit | 71fe07d040626de7b72244bf6de889c2e0f5aea3 (patch) | |
| tree | 6c4d6bed7e8510fb2c9a105dba62d2342e6fc897 /block/blk-core.c | |
| parent | 5953316dbf90067ebdeca626c34488bc166b73a8 (diff) | |
| download | lwn-71fe07d040626de7b72244bf6de889c2e0f5aea3.tar.gz lwn-71fe07d040626de7b72244bf6de889c2e0f5aea3.zip | |
block: remove request ref_count
This reference count has been around since before git history, but the only
place where it's used is in blk_execute_rq, and ther it is entirely useless
as it is incremented before submitting the request and decremented in the
end_io handler before waking up the submitter thread.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 213e9f01c627..18faa7e81d3b 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -145,7 +145,6 @@ void blk_rq_init(struct request_queue *q, struct request *rq) rq->cmd = rq->__cmd; rq->cmd_len = BLK_MAX_CDB; rq->tag = -1; - rq->ref_count = 1; rq->start_time = jiffies; set_start_time_ns(rq); rq->part = NULL; @@ -1272,8 +1271,6 @@ void __blk_put_request(struct request_queue *q, struct request *req) { if (unlikely(!q)) return; - if (unlikely(--req->ref_count)) - return; blk_pm_put_request(req); |