linux-kernel - Re: [Ocfs2-devel] [PATCH v4 2/2] ocfs2: clear unaligned io flag when dio fails

Open Source and information security mailing list archives

Date:	Thu, 5 Jul 2012 02:22:01 -0700
From:	Joel Becker <jlbec@...lplan.org>
To:	Junxiao Bi <junxiao.bi@...cle.com>
Cc:	ocfs2-devel@....oracle.com, linux-aio@...ck.org, mfasheh@...e.com,
	joe.jin@...cle.com, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [Ocfs2-devel] [PATCH v4 2/2] ocfs2: clear unaligned io flag
 when dio fails

On Wed, Jul 04, 2012 at 03:51:57PM +0800, Junxiao Bi wrote:
> On 07/04/2012 03:34 PM, Joel Becker wrote:
> > On Wed, Jun 27, 2012 at 05:09:55PM +0800, Junxiao Bi wrote:
> >> The unaligned io flag is set in the kiocb when an unaligned
> >> dio is issued, it should be cleared even when the dio fails,
> >> or it may affect the following io which are using the same
> >> kiocb.
> >>
> >> Signed-off-by: Junxiao Bi <junxiao.bi@...cle.com>
> >> Cc: stable@...r.kernel.org
> > This patch is now part of the 'fixes' branch of ocfs2.git.
> Thank you. Are you going to merge my first patch "[PATCH v4 1/2] aio:
> make kiocb->private NUll in init_sync_kiocb()"? Though Andrew's cleanup
> patch covered this fix, but it can't tell how this fix a ocfs2 hang bug.
> Also merging it will make it into stable branch.

Pushed that too.

Joel

> >
> > Joel
> >
> >> ---
> >>  fs/ocfs2/file.c |    4 +++-
> >>  1 file changed, 3 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
> >> index 061591a..98513c8 100644
> >> --- a/fs/ocfs2/file.c
> >> +++ b/fs/ocfs2/file.c
> >> @@ -2422,8 +2422,10 @@ out_dio:
> >>  		unaligned_dio = 0;
> >>  	}
> >>  
> >> -	if (unaligned_dio)
> >> +	if (unaligned_dio) {
> >> +		ocfs2_iocb_clear_unaligned_aio(iocb);
> >>  		atomic_dec(&OCFS2_I(inode)->ip_unaligned_aio);
> >> +	}
> >>  
> >>  out:
> >>  	if (rw_level != -1)
> >> -- 
> >> 1.7.9.5
> >>
> >>
> >> _______________________________________________
> >> Ocfs2-devel mailing list
> >> Ocfs2-devel@....oracle.com
> >> https://oss.oracle.com/mailman/listinfo/ocfs2-devel
> 

-- 

A good programming language should have features that make the
kind of people who use the phrase "software engineering" shake
their heads disapprovingly.
	- Paul Graham

			http://www.jlbec.org/
			jlbec@...lplan.org
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