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block: convert to dequeueing model (easy ones)

Browse source 
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 <[email protected]>
Cc: Rusty Russell <[email protected]>
Cc: Jeremy Fitzhardinge <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Cc: Alex Dubov <[email protected]>
Cc: Markus Lidel <[email protected]>
Cc: Pierre Ossman <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Tejun Heo 2009-05-08 11:54:15 +09:00 • committed by Jens Axboe
commit 296b2f6ae6
7 changed files with 36 additions and 18 deletions
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8
drivers/memstick/core/mspro_block.c
View file

@ -672,8 +672,7 @@ try_again:
msb->req_sg);
if (!msb->seg_count) {
chunk = __blk_end_request(msb->block_req, -ENOMEM,
blk_rq_cur_bytes(msb->block_req));
chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
continue;
}
@ -711,6 +710,7 @@ try_again:
dev_dbg(&card->dev, "issue end\n");
return -EAGAIN;
}
blkdev_dequeue_request(msb->block_req);
dev_dbg(&card->dev, "trying again\n");
chunk = 1;
@ -825,8 +825,10 @@ static void mspro_block_submit_req(struct request_queue *q)
return;
if (msb->eject) {
while ((req = elv_next_request(q)) != NULL)
while ((req = elv_next_request(q)) != NULL) {
blkdev_dequeue_request(req);
__blk_end_request_all(req, -ENODEV);
}
return;
}