From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: xfs@oss.sgi.com
Subject: Re: stop using ioends for direct write completions
Date: Thu, 28 Jan 2016 14:31:31 -0800 [thread overview]
Message-ID: <20160128223131.GD6431@birch.djwong.org> (raw)
In-Reply-To: <20160128220255.GA28202@lst.de>
On Thu, Jan 28, 2016 at 11:02:55PM +0100, Christoph Hellwig wrote:
> On Thu, Jan 28, 2016 at 01:58:53PM -0800, Darrick J. Wong wrote:
> > Aw, snap, I knew I'd forgotten something. Yep, we'll need that... I think
> > xfs_end_io_direct_write will have to sniff out the error status from "size"
> > and either remap or discard the CoW allocations as appropriate.
>
> I'd rather fix the direct I/O code to give us that information directly
> (pun intended). I'll add that to my short term todo list as it seems
> useful for the existing code as well.
Ok.
As for the generic/154... the code on github is sadly not very bisectable,
other than to say that until yesterday I was still tacking new code onto
the end of the patchset.
That said, I was seeing occasional hangs in generic/154 (I needed to roll
the transactions between key parts of wrapping up a CoW) and they seem to
have gone away, so it's possible that I've fixed it already.
--D
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next prev parent reply other threads:[~2016-01-28 22:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-14 10:10 stop using ioends for direct write completions Christoph Hellwig
2016-01-14 10:10 ` [PATCH] xfs: don't use " Christoph Hellwig
2016-01-28 13:16 ` stop using " Christoph Hellwig
2016-01-28 20:53 ` Darrick J. Wong
2016-01-28 21:10 ` Christoph Hellwig
2016-01-28 21:58 ` Darrick J. Wong
2016-01-28 22:02 ` Christoph Hellwig
2016-01-28 22:31 ` Darrick J. Wong [this message]
2016-01-29 8:01 ` Christoph Hellwig
2016-01-29 14:12 ` Brian Foster
2016-02-01 21:54 ` Darrick J. Wong
2016-02-02 11:17 ` Christoph Hellwig
2016-02-02 15:26 ` Brian Foster
2016-02-02 11:20 ` Christoph Hellwig
2016-02-02 15:31 ` Brian Foster
2016-02-02 16:42 ` Christoph Hellwig
2016-02-03 22:22 ` Dave Chinner
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