XFS corruption on post 3.7 tree.

[Dave Jones]

On Thu, Dec 13, 2012 at 03:55:22PM -0500, Dave Jones wrote:
 > Doing a kernel build while running on a 3.7+ tree from last night and I hit this...
 > 
 > 
 > [22637.787422] XFS: Internal error XFS_WANT_CORRUPTED_RETURN at line 163 of file fs/xfs/xfs_dir2_data.c.  Caller 0xffffffffa070086a

I unmounted, remounted, unmounted, and then ran xfs_repair on it, as prompted.
xfs_repair noted..

bad hash table for directory inode 201328949 (bad stale count): rebuilding

After remounting, things seemed ok again.
I blew away my .ccache on that drive, and restarted my compile,
and then hit the same bug again.

	Dave