From: Al Viro <viro@ZenIV.linux.org.uk>
To: Dave Chinner <david@fromorbit.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: dcache shrink list corruption?
Date: Tue, 29 Apr 2014 22:48:42 +0100 [thread overview]
Message-ID: <20140429214842.GL18016@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20140429211851.GA32204@dastard>
On Wed, Apr 30, 2014 at 07:18:51AM +1000, Dave Chinner wrote:
> Seems like it would work, but it seems fragile to me - I'm
> wondering how we can ensure that the private shrink list
> manipulations can be kept private.
>
> We have a similar situation with the inode cache (private shrink
> list) but the I_FREEING flag is set the entire time the inode is on
> the shrink list. Any new hash lookup or attempt to grab the inode
> that occurs while I_FREEING is set fails, so perhaps dentries also
> need a well defined "being torn down and freed" state where new
> references cannot be taken even though the dentry can still be
> found...
Ummm... You mean, have d_lookup() et.al. fail on something that is on
a shrink list?
next prev parent reply other threads:[~2014-04-29 21:48 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-29 16:01 dcache shrink list corruption? Miklos Szeredi
2014-04-29 17:43 ` Linus Torvalds
2014-04-29 18:03 ` Miklos Szeredi
2014-04-29 18:16 ` Al Viro
2014-04-29 19:10 ` Al Viro
2014-04-29 21:18 ` Dave Chinner
2014-04-29 21:48 ` Al Viro [this message]
2014-04-29 23:04 ` Linus Torvalds
2014-04-29 23:20 ` Al Viro
2014-04-30 2:31 ` Al Viro
2014-04-30 2:56 ` Linus Torvalds
2014-04-30 4:04 ` Al Viro
2014-04-30 15:49 ` Miklos Szeredi
2014-04-30 15:56 ` Miklos Szeredi
2014-04-30 16:03 ` Al Viro
2014-04-30 17:33 ` Miklos Szeredi
2014-04-30 18:36 ` Al Viro
2014-04-30 18:42 ` Miklos Szeredi
2014-04-30 19:02 ` Al Viro
2014-04-30 19:59 ` Al Viro
2014-04-30 20:23 ` Linus Torvalds
2014-04-30 20:38 ` Al Viro
2014-04-30 20:57 ` Linus Torvalds
2014-04-30 21:12 ` Al Viro
2014-04-30 22:12 ` Al Viro
2014-04-30 23:04 ` Linus Torvalds
2014-04-30 23:14 ` Linus Torvalds
2014-04-30 23:43 ` Al Viro
2014-05-01 0:18 ` Linus Torvalds
2014-05-01 2:51 ` Al Viro
2014-05-01 2:59 ` Linus Torvalds
2014-05-01 3:12 ` Al Viro
2014-05-01 9:42 ` Miklos Szeredi
2014-05-01 14:34 ` Al Viro
2014-05-01 21:02 ` Al Viro
2014-05-01 21:05 ` Al Viro
2014-05-01 22:52 ` Linus Torvalds
2014-05-02 8:43 ` Szeredi Miklos
2014-05-02 21:04 ` Linus Torvalds
2014-04-30 23:38 ` Al Viro
2014-04-30 9:15 ` Miklos Szeredi
2014-05-02 5:51 ` Al Viro
2014-05-02 9:00 ` Szeredi Miklos
2014-05-02 21:02 ` Miklos Szeredi
2014-05-02 21:08 ` Miklos Szeredi
2014-05-02 21:18 ` Linus Torvalds
2014-05-02 22:40 ` Al Viro
2014-05-02 23:06 ` Al Viro
2014-05-03 4:26 ` Al Viro
2014-05-03 18:07 ` Linus Torvalds
2014-05-03 18:25 ` Al Viro
2014-05-03 18:21 ` Al Viro
2014-05-04 6:29 ` Al Viro
2014-05-06 10:17 ` Miklos Szeredi
2014-05-06 14:53 ` Linus Torvalds
2014-05-06 16:52 ` Al Viro
2014-05-06 17:01 ` Linus Torvalds
2014-05-06 19:15 ` Al Viro
2014-05-02 22:32 ` Al Viro
2014-04-29 18:17 ` Linus Torvalds
2014-04-29 17:56 ` Al Viro
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=20140429214842.GL18016@ZenIV.linux.org.uk \
--to=viro@zeniv.linux.org.uk \
--cc=david@fromorbit.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=miklos@szeredi.hu \
--cc=torvalds@linux-foundation.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.