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authorChristoph Hellwig <hch@infradead.org>2013-10-04 06:49:11 -0700
committerJens Axboe <axboe@kernel.dk>2013-10-25 11:55:59 +0100
commit71fe07d040626de7b72244bf6de889c2e0f5aea3 (patch)
tree6c4d6bed7e8510fb2c9a105dba62d2342e6fc897 /block/blk-core.c
parent5953316dbf90067ebdeca626c34488bc166b73a8 (diff)
downloadlinux-linaro-stable-71fe07d040626de7b72244bf6de889c2e0f5aea3.tar.gz
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.c3
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);