From: Lukas Czerner Subject: [PATCH 1/6] Add helper function for blkdev_issue_zeroout Date: Wed, 15 Sep 2010 18:36:03 +0200 Message-ID: <1284568568-13637-2-git-send-email-lczerner@redhat.com> References: <1284568568-13637-1-git-send-email-lczerner@redhat.com> Cc: tytso@mit.edu, rwheeler@redhat.com, sandeen@redhat.com, adilger@dilger.ca, lczerner@redhat.com To: linux-ext4@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:50907 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751942Ab0IOQgX (ORCPT ); Wed, 15 Sep 2010 12:36:23 -0400 In-Reply-To: <1284568568-13637-1-git-send-email-lczerner@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: This is done the same way as function sb_issue_discard for blkdev_issue_discard. Signed-off-by: Lukas Czerner --- 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