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Add helper function for blkdev_issue_zeroout (sb_issue_discard) 

This is done the same way as helper sb_issue_discard for
blkdev_issue_discard.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Lukas Czerner 2010-10-27 21:30:04 -04:00 committed by Theodore Ts'o
parent 5c2178e785
commit e6fa0be699
1 changed files with 8 additions and 0 deletions
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8
include/linux/blkdev.h
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@ -941,6 +941,14 @@ static inline int sb_issue_discard(struct super_block *sb,
return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_NOFS,
BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
}
static inline int sb_issue_zeroout(struct super_block *sb, sector_t block,
sector_t nr_blocks, gfp_t gfp_mask, unsigned long flags)
{
return blkdev_issue_zeroout(sb->s_bdev,
block << (sb->s_blocksize_bits - 9),
nr_blocks << (sb->s_blocksize_bits - 9),
gfp_mask, flags);
}
extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);