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blkdev: generalize flags for blkdev_issue_fn functions

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The patch just convert all blkdev_issue_xxx function to common
set of flags. Wait/allocation semantics preserved.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Dmitry Monakhov
2010-04-28 17:55:06 +04:00
committed by Jens Axboe
parent 6b4517a791
commit fbd9b09a17
15 changed files with 55 additions and 34 deletions
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20
block/blk-barrier.c
View File

@@ -293,19 +293,22 @@ static void bio_end_empty_barrier(struct bio *bio, int err)
/**
* blkdev_issue_flush - queue a flush
* @bdev: blockdev to issue flush for
* @gfp_mask: memory allocation flags (for bio_alloc)
* @error_sector: error sector
* @flags: BLKDEV_IFL_* flags to control behaviour
*
* Description:
* Issue a flush for the block device in question. Caller can supply
* room for storing the error offset in case of a flush error, if they
* wish to.
*/
int blkdev_issue_flush(struct block_device *bdev, sector_t *error_sector)
int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
sector_t *error_sector, unsigned long flags)
{
DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q;
struct bio *bio;
int ret;
int ret = 0;
if (bdev->bd_disk == NULL)
return -ENXIO;
@@ -314,7 +317,7 @@ int blkdev_issue_flush(struct block_device *bdev, sector_t *error_sector)
if (!q)
return -ENXIO;
bio = bio_alloc(GFP_KERNEL, 0);
bio = bio_alloc(gfp_mask, 0);
bio->bi_end_io = bio_end_empty_barrier;
bio->bi_private = &wait;
bio->bi_bdev = bdev;
@@ -330,7 +333,6 @@ int blkdev_issue_flush(struct block_device *bdev, sector_t *error_sector)
if (error_sector)
*error_sector = bio->bi_sector;
ret = 0;
if (bio_flagged(bio, BIO_EOPNOTSUPP))
ret = -EOPNOTSUPP;
else if (!bio_flagged(bio, BIO_UPTODATE))
@@ -362,17 +364,17 @@ static void blkdev_discard_end_io(struct bio *bio, int err)
* @sector: start sector
* @nr_sects: number of sectors to discard
* @gfp_mask: memory allocation flags (for bio_alloc)
* @flags: DISCARD_FL_* flags to control behaviour
* @flags: BLKDEV_IFL_* flags to control behaviour
*
* Description:
* Issue a discard request for the sectors in question.
*/
int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, int flags)
sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
{
DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q = bdev_get_queue(bdev);
int type = flags & DISCARD_FL_BARRIER ?
int type = flags & BLKDEV_IFL_BARRIER ?
DISCARD_BARRIER : DISCARD_NOBARRIER;
struct bio *bio;
struct page *page;
@@ -395,7 +397,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
bio->bi_sector = sector;
bio->bi_end_io = blkdev_discard_end_io;
bio->bi_bdev = bdev;
if (flags & DISCARD_FL_WAIT)
if (flags & BLKDEV_IFL_WAIT)
bio->bi_private = &wait;
/*
@@ -426,7 +428,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
bio_get(bio);
submit_bio(type, bio);
if (flags & DISCARD_FL_WAIT)
if (flags & BLKDEV_IFL_WAIT)
wait_for_completion(&wait);
if (bio_flagged(bio, BIO_EOPNOTSUPP))

2
block/ioctl.c
View File

@@ -126,7 +126,7 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
if (start + len > (bdev->bd_inode->i_size >> 9))
return -EINVAL;
return blkdev_issue_discard(bdev, start, len, GFP_KERNEL,
DISCARD_FL_WAIT);
BLKDEV_IFL_WAIT);
}
static int put_ushort(unsigned long arg, unsigned short val)