From: Arne Jansen <sensille@gmx.net>
To: Chris Mason <chris.mason@fusionio.com>,
Alexander Block <ablock84@googlemail.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: wait_for_more_refs not waking up
Date: Mon, 06 Aug 2012 22:12:08 +0200 [thread overview]
Message-ID: <50202518.2080704@gmx.net> (raw)
In-Reply-To: <20120806201038.GE8417@shiny>
On 08/06/2012 10:10 PM, Chris Mason wrote:
> On Fri, Aug 03, 2012 at 01:11:31AM -0600, Alexander Block wrote:
>> I got a deadlock happening while creating a snapshot and ordered
>> writes are pending. I can reproduce it 100% using btrfs send/receive.
>> It happens when I receive a set of streams on a freshly created FS. I
>> think I can exclude send/receive as the source of the problem as it
>> happens while receiving, even when rebooting between send and receive.
>> Receive does not depend on any extra kernel support and only uses
>> normal vfs syscalls.
>
> Are you seeing this one on the git tree I sent to Linus? I triggered
> this once and then haven't seen it since I put in the barrier before the
> waitqueue active check.
I'll send a patch for this in a moment.
>
> -chris
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prev parent reply other threads:[~2012-08-06 20:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 7:11 wait_for_more_refs not waking up Alexander Block
2012-08-06 20:10 ` Chris Mason
2012-08-06 20:12 ` Arne Jansen [this message]
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