From: Christoph Hellwig <hch@infradead.org>
To: "J. Bruce Fields" <bfields@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christoph Hellwig <hch@infradead.org>,
Arnd Bergmann <arnd@arndb.de>,
Bryan Schumaker <bjschuma@netapp.com>,
linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] nfsd4: initialize delegation pointer to lease
Date: Sat, 30 Oct 2010 22:04:31 -0400 [thread overview]
Message-ID: <20101031020431.GA29702@infradead.org> (raw)
In-Reply-To: <1288474276-14288-4-git-send-email-bfields@redhat.com>
On Sat, Oct 30, 2010 at 05:31:16PM -0400, J. Bruce Fields wrote:
> The NFSv4 server was initializing the dp->dl_flock pointer by the
> somewhat ridiculous method of a locks_copy_lock callback.
>
> Now that setlease uses the passed-in lock instead of doing a copy,
> dl_flock no longer gets set, resulting in the lock leaking on delegation
> release, and later possible hangs (among other problems).
>
> So, initialize dl_flock and get rid of the callback.
>From what I can see this was the only instance of
lock_manager_operations.fl_copy_lock. Please kill it while you're at
it.
Also lock_manager_operations.fl_release_private has only exact one
instance in nfs4d which is part of the same abuse scheme. Please also
get rid of it. I recently noticed this while updating
Documentation/filesystems/Locking for the grand new BKL-less world.
next prev parent reply other threads:[~2010-10-31 2:04 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-26 16:45 nfsd changes for 2.6.37 J. Bruce Fields
2010-10-26 17:22 ` J. Bruce Fields
2010-10-26 17:39 ` Linus Torvalds
[not found] ` <AANLkTi=emsmLNFSV=j48d37JQxecQmNGZwY9OYdoKjeS-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-10-26 17:46 ` J. Bruce Fields
2010-10-26 17:46 ` J. Bruce Fields
2010-10-26 20:18 ` Arnd Bergmann
2010-10-26 20:35 ` Bryan Schumaker
2010-10-26 20:55 ` Arnd Bergmann
2010-10-26 21:02 ` Linus Torvalds
2010-10-26 21:24 ` J. Bruce Fields
2010-10-26 21:37 ` Linus Torvalds
2010-10-26 21:44 ` J. Bruce Fields
2010-10-26 22:11 ` J. Bruce Fields
2010-10-26 22:41 ` J. Bruce Fields
2010-10-27 7:21 ` Arnd Bergmann
2010-10-27 8:39 ` Christoph Hellwig
2010-10-27 13:39 ` J. Bruce Fields
2010-10-27 13:46 ` Arnd Bergmann
2010-10-27 14:55 ` J. Bruce Fields
2010-10-27 14:59 ` Christoph Hellwig
2010-10-27 15:16 ` J. Bruce Fields
2010-10-27 15:19 ` Christoph Hellwig
2010-10-27 15:23 ` Arnd Bergmann
2010-10-27 15:28 ` J. Bruce Fields
2010-10-27 15:31 ` Christoph Hellwig
2010-10-27 16:12 ` Linus Torvalds
[not found] ` <AANLkTinTm-LwjfBfoFUyp5Dj8S2hexnHGQGpZiOWqyMY-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-10-27 16:46 ` J. Bruce Fields
2010-10-27 16:46 ` J. Bruce Fields
2010-10-27 17:32 ` Linus Torvalds
2010-10-27 17:40 ` J. Bruce Fields
2010-10-27 18:20 ` Arnd Bergmann
2010-10-27 18:42 ` Linus Torvalds
2010-10-27 18:43 ` Linus Torvalds
2010-10-27 19:48 ` Arnd Bergmann
2010-10-27 20:01 ` J. Bruce Fields
2010-10-27 20:20 ` Arnd Bergmann
2010-10-27 20:24 ` J. Bruce Fields
2010-10-30 21:25 ` J. Bruce Fields
2010-10-30 21:31 ` [PATCH 1/4] locks: prevent ENOMEM on lease unlock J. Bruce Fields
2010-10-30 21:31 ` [PATCH 2/4] locks: fix leaks on setlease errors J. Bruce Fields
2010-10-31 11:10 ` Christoph Hellwig
2010-11-01 17:24 ` J. Bruce Fields
2010-11-01 17:41 ` Christoph Hellwig
2010-11-01 18:34 ` J. Bruce Fields
2010-10-30 21:31 ` [PATCH 3/4] locks: fix setlease methods to free passed-in lock J. Bruce Fields
2010-10-30 21:31 ` [PATCH 4/4] nfsd4: initialize delegation pointer to lease J. Bruce Fields
2010-10-31 2:04 ` Christoph Hellwig [this message]
2010-10-31 3:04 ` J. Bruce Fields
2010-10-30 21:40 ` nfsd changes for 2.6.37 Arnd Bergmann
2010-10-31 2:07 ` Christoph Hellwig
2010-10-31 3:05 ` J. Bruce Fields
2010-10-31 12:34 ` Christoph Hellwig
2010-10-31 12:35 ` [PATCH 1/2] locks: let the caller free file_lock on ->setlease failure Christoph Hellwig
2010-11-03 20:41 ` J. Bruce Fields
2010-11-04 1:40 ` J. Bruce Fields
2010-11-04 1:41 ` J. Bruce Fields
2010-11-06 19:03 ` Christoph Hellwig
2010-11-06 19:03 ` Christoph Hellwig
2010-11-08 16:10 ` J. Bruce Fields
2010-10-31 12:35 ` [PATCH 2/2] locks: remove fl_copy_lock lock_manager operation Christoph Hellwig
2010-11-01 15:02 ` nfsd changes for 2.6.37 J. Bruce Fields
2010-11-06 19:04 ` 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=20101031020431.GA29702@infradead.org \
--to=hch@infradead.org \
--cc=arnd@arndb.de \
--cc=bfields@redhat.com \
--cc=bjschuma@netapp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--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.