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/pf.c | |
| parent | 2d75ce084eec2a8154225c7e978191b364029003 (diff) | |
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/pf.c')
| -rw-r--r-- | drivers/block/paride/pf.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c index e88c889aa7f..d6f7bd84ed3 100644 --- a/drivers/block/paride/pf.c +++ b/drivers/block/paride/pf.c @@ -752,10 +752,8 @@ static struct request_queue *pf_queue; static void pf_end_request(int err) { - if (pf_req) { - __blk_end_request_cur(pf_req, err); + if (pf_req && !__blk_end_request_cur(pf_req, err)) pf_req = NULL; - } } static void do_pf_request(struct request_queue * q) @@ -763,9 +761,12 @@ static void do_pf_request(struct request_queue * q) if (pf_busy) return; repeat: - pf_req = elv_next_request(q); - if (!pf_req) - return; + if (!pf_req) { + pf_req = elv_next_request(q); + if (!pf_req) + return; + blkdev_dequeue_request(pf_req); + } pf_current = pf_req->rq_disk->private_data; pf_block = blk_rq_pos(pf_req); @@ -806,7 +807,6 @@ static int pf_next_buf(void) if (!pf_count) { spin_lock_irqsave(&pf_spin_lock, saved_flags); pf_end_request(0); - pf_req = elv_next_request(pf_queue); spin_unlock_irqrestore(&pf_spin_lock, saved_flags); if (!pf_req) return 1; |