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block: replace end_request() with [__]blk_end_request_cur()

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end_request() has been kept around for backward compatibility;
however, it's about time for it to go away.

* There aren't too many users left.

* Its use of @updtodate is pretty confusing.

* In some cases, newer code ends up using mixture of end_request() and
  [__]blk_end_request[_all](), which is way too confusing.

So, add [__]blk_end_request_cur() and replace end_request() with it.
Most conversions are straightforward.  Noteworthy ones are...

* paride/pcd: next_request() updated to take 0/-errno instead of 1/0.

* paride/pf: pf_end_request() and next_request() updated to take
  0/-errno instead of 1/0.

* xd: xd_readwrite() updated to return 0/-errno instead of 1/0.

* mtd/mtd_blkdevs: blktrans_discard_request() updated to return
  0/-errno instead of 1/0.  Unnecessary local variable res
  initialization removed from mtd_blktrans_thread().

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Joerg Dorchain <joerg@dorchain.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Laurent Vivier <Laurent@lvivier.info>
Cc: Tim Waugh <tim@cyberelk.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: unsik Kim <donari75@gmail.com>
This commit is contained in:
Tejun Heo
2009-04-23 11:05:19 +09:00
committed by Jens Axboe
parent 40cbbb781d
commit f06d9a2b52
19 changed files with 128 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/mtd/mtd_blkdevs.c
View File

@@ -54,33 +54,33 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (req->cmd_type == REQ_TYPE_LINUX_BLOCK &&
req->cmd[0] == REQ_LB_OP_DISCARD)
return !tr->discard(dev, block, nsect);
return tr->discard(dev, block, nsect);
if (!blk_fs_request(req))
return 0;
return -EIO;
if (req->sector + req->current_nr_sectors > get_capacity(req->rq_disk))
return 0;
return -EIO;
switch(rq_data_dir(req)) {
case READ:
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->readsect(dev, block, buf))
return 0;
return 1;
return -EIO;
return 0;
case WRITE:
if (!tr->writesect)
return 0;
return -EIO;
for (; nsect > 0; nsect--, block++, buf += tr->blksize)
if (tr->writesect(dev, block, buf))
return 0;
return 1;
return -EIO;
return 0;
default:
printk(KERN_NOTICE "Unknown request %u\n", rq_data_dir(req));
return 0;
return -EIO;
}
}
@@ -96,7 +96,7 @@ static int mtd_blktrans_thread(void *arg)
while (!kthread_should_stop()) {
struct request *req;
struct mtd_blktrans_dev *dev;
int res = 0;
int res;
req = elv_next_request(rq);
@@ -119,7 +119,7 @@ static int mtd_blktrans_thread(void *arg)
spin_lock_irq(rq->queue_lock);
end_request(req, res);
__blk_end_request_cur(req, res);
}
spin_unlock_irq(rq->queue_lock);