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block: remove support for bio remapping from ->make_request

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There is very little benefit in allowing to let a ->make_request
instance update the bios device and sector and loop around it in
__generic_make_request when we can archive the same through calling
generic_make_request from the driver and letting the loop in
generic_make_request handle it.

Note that various drivers got the return value from ->make_request and
returned non-zero values for errors.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: NeilBrown <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2011-09-12 12:12:01 +02:00 • committed by Jens Axboe
commit 5a7bbad27a
25 changed files with 151 additions and 215 deletions
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7
drivers/s390/block/dcssblk.c
View file

@ -27,7 +27,7 @@
static int dcssblk_open(struct block_device *bdev, fmode_t mode);
static int dcssblk_release(struct gendisk *disk, fmode_t mode);
static int dcssblk_make_request(struct request_queue *q, struct bio *bio);
static void dcssblk_make_request(struct request_queue *q, struct bio *bio);
static int dcssblk_direct_access(struct block_device *bdev, sector_t secnum,
void **kaddr, unsigned long *pfn);
@ -814,7 +814,7 @@ out:
return rc;
}
static int
static void
dcssblk_make_request(struct request_queue *q, struct bio *bio)
{
struct dcssblk_dev_info *dev_info;
@ -871,10 +871,9 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio)
bytes_done += bvec->bv_len;
}
bio_endio(bio, 0);
return 0;
return;
fail:
bio_io_error(bio);
return 0;
}
static int

5
drivers/s390/block/xpram.c
View file

@ -181,7 +181,7 @@ static unsigned long xpram_highest_page_index(void)
/*
* Block device make request function.
*/
static int xpram_make_request(struct request_queue *q, struct bio *bio)
static void xpram_make_request(struct request_queue *q, struct bio *bio)
{
xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data;
struct bio_vec *bvec;
@ -221,10 +221,9 @@ static int xpram_make_request(struct request_queue *q, struct bio *bio)
}
set_bit(BIO_UPTODATE, &bio->bi_flags);
bio_endio(bio, 0);
return 0;
return;
fail:
bio_io_error(bio);
return 0;
}
static int xpram_getgeo(struct block_device *bdev, struct hd_geometry *geo)