From: Christoph Hellwig <hch@infradead.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Bryan Schumaker <bjschuma@netapp.com>,
linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: nfsd changes for 2.6.37
Date: Wed, 27 Oct 2010 11:31:14 -0400 [thread overview]
Message-ID: <20101027153114.GA23126@infradead.org> (raw)
In-Reply-To: <201010271723.59734.arnd@arndb.de>
On Wed, Oct 27, 2010 at 05:23:59PM +0200, Arnd Bergmann wrote:
> It comes back to the original problem with Bruce's patch though:
> fcntl_setlease wants to atomically add a lease or fail. If
> fasync_helper fails, we want to remove the lease that was
> just added before anyone can see it. At the very least we need
> to keep the flock from getting freed in another thread while
> we call fasync_helper without the lock.
a variant of fasync_add_entry that takes a preallocated
fasync_struct would indeed take care of that.
> locks_delete_lock is also called with lock_flocks held and calls
> fasync_helper...
but with on = 0, which calls into fasync_remove_entry, which doesn't
sleep.
next prev parent reply other threads:[~2010-10-27 15:31 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
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 [this message]
2010-10-27 16:12 ` Linus Torvalds
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
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
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