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| author | Tejun Heo <tj@kernel.org> | 2009-05-08 11:54:15 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-11 09:52:17 +0200 |
| commit | 296b2f6ae654581adc27f0d6f0af454c7f3d06ee (patch) | |
| tree | 8fab2b91741336d41e559a839b547d7ac3090524 /drivers/block | |
| parent | fb3ac7f6b811eac8e0aafa3df1c16ed872e898a8 (diff) | |
| download | linux-296b2f6ae654581adc27f0d6f0af454c7f3d06ee.tar.gz linux-296b2f6ae654581adc27f0d6f0af454c7f3d06ee.tar.bz2 linux-296b2f6ae654581adc27f0d6f0af454c7f3d06ee.zip | |
block: convert to dequeueing model (easy ones)
plat-omap/mailbox, floppy, viocd, mspro_block, i2o_block and
mmc/card/queue are already pretty close to dequeueing model and can be
converted with simple changes. Convert them.
While at it,
* xen-blkfront: !fs check moved downwards to share dequeue call with
normal path.
* mspro_block: __blk_end_request(..., blk_rq_cur_byte()) converted to
__blk_end_request_cur()
* mmc/card/queue: loop of __blk_end_request() converted to
__blk_end_request_all()
[ Impact: dequeue in-flight request ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/floppy.c | 4 | ||||
| -rw-r--r-- | drivers/block/xen-blkfront.c | 13 |
2 files changed, 10 insertions, 7 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 1e27ed9208b4..e2c70d2085ae 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -931,7 +931,7 @@ static inline void unlock_fdc(void) del_timer(&fd_timeout); cont = NULL; clear_bit(0, &fdc_busy); - if (elv_next_request(floppy_queue)) + if (current_req || elv_next_request(floppy_queue)) do_fd_request(floppy_queue); spin_unlock_irqrestore(&floppy_lock, flags); wake_up(&fdc_wait); @@ -2913,6 +2913,8 @@ static void redo_fd_request(void) spin_lock_irq(floppy_queue->queue_lock); req = elv_next_request(floppy_queue); + if (req) + blkdev_dequeue_request(req); spin_unlock_irq(floppy_queue->queue_lock); if (!req) { do_floppy = NULL; diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 91fc56597e9b..66f834571b88 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -301,22 +301,23 @@ static void do_blkif_request(struct request_queue *rq) while ((req = elv_next_request(rq)) != NULL) { info = req->rq_disk->private_data; - if (!blk_fs_request(req)) { - __blk_end_request_cur(req, -EIO); - continue; - } if (RING_FULL(&info->ring)) goto wait; + blkdev_dequeue_request(req); + + if (!blk_fs_request(req)) { + __blk_end_request_all(req, -EIO); + continue; + } + pr_debug("do_blk_req %p: cmd %p, sec %lx, " "(%u/%u) buffer:%p [%s]\n", req, req->cmd, (unsigned long)blk_rq_pos(req), blk_rq_cur_sectors(req), blk_rq_sectors(req), req->buffer, rq_data_dir(req) ? "write" : "read"); - - blkdev_dequeue_request(req); if (blkif_queue_request(req)) { blk_requeue_request(rq, req); wait: |