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Date: Fri, 22 Feb 2013 11:53:02 -0500
From: Josef Bacik <jbacik@fusionio.com>
To: Mace Moneta <moneta.mace@gmail.com>
CC: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: WARNING: at fs/btrfs/extent_io.c:4718
 map_private_extent_buffer+0xd4/0xe0 [btrfs]()
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On Fri, Feb 22, 2013 at 07:46:16AM -0700, Mace Moneta wrote:
> https://bugzilla.redhat.com/show_bug.cgi?id=906142
> 
> With 3.8 kernels in Fedora 18, using encfs on btrfs I get the
> following error.  It can take hours of use before I get a
> reoccurrence, and I need to btrfsck, btrfs-zero-log, and/or mount with
> '-o recovery' to get the filesystem back after a reboot.  No data
> appears to be lost, and a scrub runs to completion with no errors.

Could you do

gdb btrfs.ko
list *(btrfs_log_inode+0x3b8)

and tell me what it says?  Thanks,

Josef