diff options
| author | Tejun Heo <tj@kernel.org> | 2009-05-08 11:54:06 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-11 09:52:16 +0200 |
| commit | b12d4f82c1a3cdcb2441c803a3368a9426f2f47f (patch) | |
| tree | 043c804960c3192076737411c1a6854f2b49ded9 /drivers/block/paride/pd.c | |
| parent | 2d75ce084eec2a8154225c7e978191b364029003 (diff) | |
| download | lwn-b12d4f82c1a3cdcb2441c803a3368a9426f2f47f.tar.gz lwn-b12d4f82c1a3cdcb2441c803a3368a9426f2f47f.zip | |
paride: dequeue in-flight request
pd/pf/pcd have track in-flight request by pd/pf/pcd_req. They can be
converted to dequeueing model by updating fetching and completion
paths. Convert them.
Note that removal of elv_next_request() call from pf_next_buf()
doesn't make any functional difference. The path is traveled only
during partial completion of a request and elv_next_request() call
must return the same request anyway.
[ Impact: dequeue in-flight request ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Tim Waugh <tim@cyberelk.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/paride/pd.c')
| -rw-r--r-- | drivers/block/paride/pd.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c index 9ec5d4ac0b64..d2ca3f552061 100644 --- a/drivers/block/paride/pd.c +++ b/drivers/block/paride/pd.c @@ -410,11 +410,14 @@ static void run_fsm(void) pd_claimed = 0; phase = NULL; spin_lock_irqsave(&pd_lock, saved_flags); - __blk_end_request_cur(pd_req, - res == Ok ? 0 : -EIO); - pd_req = elv_next_request(pd_queue); - if (!pd_req) - stop = 1; + if (!__blk_end_request_cur(pd_req, + res == Ok ? 0 : -EIO)) { + pd_req = elv_next_request(pd_queue); + if (!pd_req) + stop = 1; + else + blkdev_dequeue_request(pd_req); + } spin_unlock_irqrestore(&pd_lock, saved_flags); if (stop) return; @@ -706,6 +709,7 @@ static void do_pd_request(struct request_queue * q) pd_req = elv_next_request(q); if (!pd_req) return; + blkdev_dequeue_request(pd_req); schedule_fsm(); } |