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Date: Wed, 15 Sep 2010 18:36:03 +0200 From: Lukas Czerner <lczerner@...hat.com> To: linux-ext4@...r.kernel.org Cc: tytso@....edu, rwheeler@...hat.com, sandeen@...hat.com, adilger@...ger.ca, lczerner@...hat.com Subject: [PATCH 1/6] Add helper function for blkdev_issue_zeroout This is done the same way as function sb_issue_discard for blkdev_issue_discard. Signed-off-by: Lukas Czerner <lczerner@...hat.com> --- include/linux/blkdev.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 09a8402..a22939d 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1023,6 +1023,14 @@ static inline int sb_issue_discard(struct super_block *sb, return blkdev_issue_discard(sb->s_bdev, block, nr_blocks, GFP_KERNEL, BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER); } +static inline int sb_issue_zeroout(struct super_block *sb, + sector_t block, sector_t nr_blocks) +{ + block <<= (sb->s_blocksize_bits - 9); + nr_blocks <<= (sb->s_blocksize_bits - 9); + return blkdev_issue_zeroout(sb->s_bdev, block, nr_blocks, GFP_KERNEL, + BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER); +} extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm); -- 1.7.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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