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Message-ID: <AANLkTik3vm6PYig5oAbB9P1e=1Nyz6tREpYJHuKOTRCN@mail.gmail.com> Date: Wed, 15 Sep 2010 16:33:56 -0400 From: Mike Snitzer <snitzer@...il.com> To: Lukas Czerner <lczerner@...hat.com> Cc: linux-ext4@...r.kernel.org, tytso@....edu, rwheeler@...hat.com, sandeen@...hat.com, adilger@...ger.ca Subject: Re: [PATCH 1/6] Add helper function for blkdev_issue_zeroout On Wed, Sep 15, 2010 at 12:36 PM, Lukas Czerner <lczerner@...hat.com> wrote: > 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); > +} You'll need to rebase this patch against Jens' linux-2.6-block.git 'for-next' branch. The flags have changed such that the sb_issue_discard caller passes them in (and BLKDEV_IFL_BARRIER no longer exists). See the following commits from linux-2.6-block.git: http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=2cf6d26a354ab http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=61002f7db33c7 http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=8c5553678237b -- 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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