From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 1/8] xfs: Pull EFI/EFD handling out from under the AIL lock
Date: Fri, 3 Dec 2010 16:24:45 +1100 [thread overview]
Message-ID: <20101203052445.GC23339@dastard> (raw)
In-Reply-To: <20101202113849.GA21365@infradead.org>
On Thu, Dec 02, 2010 at 06:38:49AM -0500, Christoph Hellwig wrote:
> On Thu, Dec 02, 2010 at 12:28:41PM +1100, Dave Chinner wrote:
> > > - there is a behaviour change about the xfs_trans_del_item call
> > > in xfs_efi_item_unpin - before it was protected by the
> > > XFS_EFI_CANCELED which was never set, and now it's not.
> >
> > XFS_EFI_CANCELED has not been set in the code base since
> > xfs_efi_cancel() was removed back in 2006 by commit
> > 065d312e15902976d256ddaf396a7950ec0350a8 ("[XFS] Remove unused
> > iop_abort log item operation), and even then xfs_efi_cancel() was
> > never called. I haven't tracked it back further than that (beyond
> > git history), but handling of efis in cancelled transactions has
> > been broken for a long time.
> >
> > Basically, when we get an IOP_UNPIN(lip, 1); call from
> > xfs_trans_uncommit() (i.e. remove == 1), if we don't free the log
> > item descriptor we leak it. IOWs, the new behaviour introduced in
> > this patch is actually the correct behaviour.
>
> Maybe fix this issue first in a separate patch, instead of hiding it
> in a bigger one.
Ok, I'll split it out.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2010-12-03 5:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-29 1:12 [PATCH 0/8] xfs: AIL lock contention reduction V2 Dave Chinner
2010-11-29 1:12 ` [PATCH 1/8] xfs: Pull EFI/EFD handling out from under the AIL lock Dave Chinner
2010-11-30 20:17 ` Christoph Hellwig
2010-12-02 1:28 ` Dave Chinner
2010-12-02 11:38 ` Christoph Hellwig
2010-12-03 5:24 ` Dave Chinner [this message]
2010-11-29 1:12 ` [PATCH 2/8] xfs: clean up xfs_ail_delete() Dave Chinner
2010-11-30 20:19 ` Christoph Hellwig
2010-11-29 1:12 ` [PATCH 3/8] xfs: bulk AIL insertion during transaction commit Dave Chinner
2010-11-30 22:40 ` Christoph Hellwig
2010-12-02 1:32 ` Dave Chinner
2010-11-29 1:12 ` [PATCH 4/8] xfs: reduce the number of AIL push wakeups Dave Chinner
2010-11-30 20:19 ` Christoph Hellwig
2010-11-29 1:12 ` [PATCH 5/8] xfs: consume iodone callback items on buffers as they are processed Dave Chinner
2010-11-30 20:24 ` Christoph Hellwig
2010-11-29 1:12 ` [PATCH 6/8] xfs: remove all the inodes on a buffer from the AIL in bulk Dave Chinner
2010-12-06 14:33 ` Christoph Hellwig
2010-12-07 3:44 ` Dave Chinner
2010-12-07 7:39 ` Christoph Hellwig
2010-11-29 1:12 ` [PATCH 8/8] xfs: use AIL bulk delete function to implement single delete Dave Chinner
2010-12-06 14:37 ` Christoph Hellwig
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