From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 4/6] libxfs: reused invalidated buffers leak state and data
Date: Fri, 4 Jul 2014 07:15:09 -0700 [thread overview]
Message-ID: <20140704141509.GB29520@infradead.org> (raw)
In-Reply-To: <1404453435-1915-5-git-send-email-david@fromorbit.com>
On Fri, Jul 04, 2014 at 03:57:13PM +1000, Dave Chinner wrote:
> @@ -632,6 +632,12 @@ libxfs_putbuf(xfs_buf_t *bp)
> pthread_mutex_unlock(&bp->b_lock);
> }
> }
> + /*
> + * ensure that any errors on this use of the buffer don't carry
> + * over to the next user.
> + */
> + bp->b_error = 0;
> +
> cache_node_put(libxfs_bcache, (struct cache_node *)bp);
This seems a bit fishy to me. For one I'm pretty sure it needs to be
done before unlocking b_lock, second it's different behavior from the
kernel where we explicitly clear it in the caller for the rare case
we want to reuse a buffer that had an error (xfs_buf_iodone_callbacks
seems to be the only one). Any reason to do this differently in
userspace?
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2014-07-04 14:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-04 5:57 [PATCH 0/6] xfsprogs: fixes for 3.2.1 Dave Chinner
2014-07-04 5:57 ` [PATCH 1/6] repair: support more than 25 ACLs Dave Chinner
2014-07-04 14:23 ` Christoph Hellwig
2014-07-04 5:57 ` [PATCH 2/6] xfs_db: write command broken on 64 bit values Dave Chinner
2014-07-04 14:08 ` Christoph Hellwig
2014-07-04 5:57 ` [PATCH 3/6] repair: handle directory block corruption in phase 6 Dave Chinner
2014-07-04 14:24 ` Christoph Hellwig
2014-07-04 5:57 ` [PATCH 4/6] libxfs: reused invalidated buffers leak state and data Dave Chinner
2014-07-04 14:15 ` Christoph Hellwig [this message]
2014-07-04 22:22 ` Dave Chinner
2014-07-05 9:48 ` Christoph Hellwig
2014-07-06 23:54 ` Dave Chinner
2014-07-07 0:09 ` Dave Chinner
2014-07-07 10:05 ` Christoph Hellwig
2014-07-04 5:57 ` [PATCH 5/6] repair: fix quota inode handling in secondary superblocks Dave Chinner
2014-07-04 14:35 ` Christoph Hellwig
2014-07-04 5:57 ` [PATCH 6/6] repair: get rid of BADFSINO Dave Chinner
2014-07-04 14:15 ` Christoph Hellwig
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=20140704141509.GB29520@infradead.org \
--to=hch@infradead.org \
--cc=david@fromorbit.com \
--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