linux-ext4 - Re: [PATCH -V2 2/2] ext4: truncate the file properly if we fail to copy data from userspace

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Message-ID: <20090609101254.GA9235@duck.suse.cz>
Date:	Tue, 9 Jun 2009 12:12:54 +0200
From:	Jan Kara <jack@...e.cz>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	Theodore Tso <tytso@....edu>, cmm@...ibm.com, sandeen@...hat.com,
	linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH -V2 2/2] ext4: truncate the file properly if we fail to
	copy data from userspace

On Tue 09-06-09 01:50:49, Aneesh Kumar K.V wrote:
> On Mon, Jun 08, 2009 at 03:14:20PM -0400, Theodore Tso wrote:
> > On Mon, Jun 08, 2009 at 10:13:57PM +0530, Aneesh Kumar K.V wrote:
> > > I think i both the case Jan's patch
> > > allocate-blocks-correctly-with-subpage-blocksize need an update ? Since you have put
> > > the patch before Jan's changes.
> > 
> > OK, here's how I updated Jan's patch.  I'm going to assume that we'll
> > submit the ext4 patch queue immediately as soon as the merge window
> > opens, since my impression is Jan is still waiting for some mm
> > developers to review his patch set.   
> > 
> > Annesh, does this look good to you?
> 
> I just did a quick look. Should we do a block_unlock_hole_extend after
> journal_stop. We do a block_lock_hole_extend before journal_start.
  Well, it's not really necessary (and it was not like that in my original
patch). You just have to do it after i_size has been updated and the
function just needs to acquire inode_lock spinlock so there's no risk of
deadlock anywhere...

									Honza

-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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