From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>, xfs@oss.sgi.com
Subject: Re: stop using ioends for direct write completions
Date: Thu, 28 Jan 2016 12:53:33 -0800 [thread overview]
Message-ID: <20160128205333.GF20038@birch.djwong.org> (raw)
In-Reply-To: <20160128131656.GB14876@infradead.org>
On Thu, Jan 28, 2016 at 05:16:56AM -0800, Christoph Hellwig wrote:
> Any chance to get a review for this? It should really help
> with sorting out the buffered I/O COW code.
It looks reasonable to me. I separated the dio and buffered CoW remap paths a
couple of weeks ago, because it seems that IO errors only get passed back as a
return value from __blockdev_direct_IO, therefore the remapping has to be done
from xfs_vm_do_dio anyway because we don't want to remap if the write fails.
Just yesterday I removed the "is_cow" flag from the ioend, so now we're back to
having a separate XFS_IO_COW ioend type.
So... reflink doesn't need the patch but OTOH directio doesn't really need
the overhead of allocating an ioend anyway. :)
--D
>
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2016-01-28 20:54 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 [this message]
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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160128205333.GF20038@birch.djwong.org \
--to=darrick.wong@oracle.com \
--cc=hch@infradead.org \
--cc=hch@lst.de \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox