On Wed, Jan 25, 2017 at 05:06:39PM -0800, Omar Sandoval wrote:
> From: Omar Sandoval <osandov@xxxxxx>
>
> When you snapshot a subvolume containing a subvolume, you get a
> placeholder directory where the subvolume would be. These directory
> inodes have ->i_ops set to btrfs_dir_ro_inode_operations. Previously,
> these i_ops didn't include the xattr operation callbacks. The conversion
> to xattr_handlers missed this case, leading to bogus attempts to set
> xattrs on these inodes. This manifested itself as failures when running
> delayed inodes.
>
> To fix this, clear IOP_XATTR in ->i_opflags on these inodes.
>
> Fixes: 6c6ef9f26e59 ("xattr: Stop calling {get,set,remove}xattr inode operations")
> Cc: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
> Reported-by: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
> Tested-by: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.9.x
> Signed-off-by: Omar Sandoval <osandov@xxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
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