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| author | Tejun Heo <tj@kernel.org> | 2009-04-23 04:05:19 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-04-28 07:37:35 +0200 |
| commit | 40cbbb781d3eba5d6ac0860db078af490e5c7c6b (patch) | |
| tree | dec374543cf045fc630bccddbb7646c695094b0d /drivers/cdrom | |
| parent | block: move rq->start_time initialization to blk_rq_init() (diff) | |
| download | linux-40cbbb781d3eba5d6ac0860db078af490e5c7c6b.tar.xz linux-40cbbb781d3eba5d6ac0860db078af490e5c7c6b.zip | |
block: implement and use [__]blk_end_request_all()
There are many [__]blk_end_request() call sites which call it with
full request length and expect full completion. Many of them ensure
that the request actually completes by doing BUG_ON() the return
value, which is awkward and error-prone.
This patch adds [__]blk_end_request_all() which takes @rq and @error
and fully completes the request. BUG_ON() is added to to ensure that
this actually happens.
Most conversions are simple but there are a few noteworthy ones.
* cdrom/viocd: viocd_end_request() replaced with direct calls to
__blk_end_request_all().
* s390/block/dasd: dasd_end_request() replaced with direct calls to
__blk_end_request_all().
* s390/char/tape_block: tapeblock_end_request() replaced with direct
calls to blk_end_request_all().
[ Impact: cleanup ]
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Mike Miller <mike.miller@hp.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/cdrom')
| -rw-r--r-- | drivers/cdrom/gdrom.c | 2 | ||||
| -rw-r--r-- | drivers/cdrom/viocd.c | 25 |
2 files changed, 5 insertions, 22 deletions
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c index 2eecb779437b..fee9a9e83fc9 100644 --- a/drivers/cdrom/gdrom.c +++ b/drivers/cdrom/gdrom.c @@ -632,7 +632,7 @@ static void gdrom_readdisk_dma(struct work_struct *work) * before handling ending the request */ spin_lock(&gdrom_lock); list_del_init(&req->queuelist); - __blk_end_request(req, err, blk_rq_bytes(req)); + __blk_end_request_all(req, err); } spin_unlock(&gdrom_lock); kfree(read_command); diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c index 13929356135c..cc3efa096e1a 100644 --- a/drivers/cdrom/viocd.c +++ b/drivers/cdrom/viocd.c @@ -291,23 +291,6 @@ static int send_request(struct request *req) return 0; } -static void viocd_end_request(struct request *req, int error) -{ - int nsectors = req->hard_nr_sectors; - - /* - * Make sure it's fully ended, and ensure that we process - * at least one sector. - */ - if (blk_pc_request(req)) - nsectors = (req->data_len + 511) >> 9; - if (!nsectors) - nsectors = 1; - - if (__blk_end_request(req, error, nsectors << 9)) - BUG(); -} - static int rwreq; static void do_viocd_request(struct request_queue *q) @@ -316,11 +299,11 @@ static void do_viocd_request(struct request_queue *q) while ((rwreq == 0) && ((req = elv_next_request(q)) != NULL)) { if (!blk_fs_request(req)) - viocd_end_request(req, -EIO); + __blk_end_request_all(req, -EIO); else if (send_request(req) < 0) { printk(VIOCD_KERN_WARNING "unable to send message to OS/400!"); - viocd_end_request(req, -EIO); + __blk_end_request_all(req, -EIO); } else rwreq++; } @@ -531,9 +514,9 @@ return_complete: "with rc %d:0x%04X: %s\n", req, event->xRc, bevent->sub_result, err->msg); - viocd_end_request(req, -EIO); + __blk_end_request_all(req, -EIO); } else - viocd_end_request(req, 0); + __blk_end_request_all(req, 0); /* restart handling of incoming requests */ spin_unlock_irqrestore(&viocd_reqlock, flags); |