linux-kernel - Re: [PATCH 06/21] ocfs2: drop vmtruncate

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Message-ID: <CANGUGtB_c5YzmCwTyVnmy2uNK-G9CArG=fcj47T1zZc75pe0-A@mail.gmail.com>
Date:	Thu, 25 Oct 2012 08:37:44 +0200
From:	Marco Stornelli <marco.stornelli@...il.com>
To:	Marco Stornelli <marco.stornelli@...il.com>,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	Mark Fasheh <mfasheh@...e.com>, ocfs2-devel@....oracle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/21] ocfs2: drop vmtruncate

2012/10/25 Joel Becker <jlbec@...lplan.org>:
> On Tue, Oct 23, 2012 at 02:48:38PM +0200, Marco Stornelli wrote:
>> 2012/10/23 Joel Becker <jlbec@...lplan.org>:
>> > On Tue, Oct 23, 2012 at 10:58:42AM +0200, Marco Stornelli wrote:
>> >> 2012/10/23 Joel Becker <jlbec@...lplan.org>:
>> >> > On Sat, Oct 20, 2012 at 02:19:00PM +0200, Marco Stornelli wrote:
>> >> >> Removed vmtruncate
>> >> >>
>> >> >> Signed-off-by: Marco Stornelli <marco.stornelli@...il.com>
>> >> >
>> >> > Acked-by: Joel Becker <jlbec@...lplan.org>
>> >> >
>> >> > Do you want me to pull this, or are you going to send it with your set?
>> >> >
>> >> > Joel
>> >> >
>> >>
>> >> I'd prefer to push all via Al's tree since there is a VFS change.
>> >
>> > SGTM.  Thanks!
>> >
>> > Joel
>> >
>>
>> I've got a doubt and I ask to ocfs2 expert :) It seems i_size_write()
>> and truncate_inode_pages() and so on, they are already called in each
>> path of setattr for a size change, so maybe we can remove
>> truncate_setsize() and simply to remove the vmtuncate code, can you
>> give me your opinion?
>
>         Actually, I have to revisit this, because Chrisoph points out
> your adjusting i_size outside of a transaction.
>
> Joel
>

Actually i_size should be changed in a transaction previous, the code
is not changed from this point of view. Indeed the call of
truncate_setsize() should be a nop.

Marco
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