[PATCH 11/11] xfs: fix btree cursor error cleanups

[Christoph Hellwig]

On Thu, Aug 06, 2015 at 01:44:32PM -0400, Brian Foster wrote:
> The btree cursor cleanup function takes an error parameter that affects
> how buffers are released from the cursor. All buffers are released in
> the event of error. Several callers do not specify the XFS_BTREE_ERROR
> flag in the event of error, however. This can cause buffers to hang
> around locked or with an elevated hold count and thus lead to umount
> hangs in the event of errors.
> 
> Fix up the xfs_btree_del_cursor() callers to pass XFS_BTREE_ERROR if the
> cursor is being torn down due to error.
> 
> Signed-off-by: Brian Foster <bfoster at redhat.com>

Looks fine,

Reviewed-by: Christoph Hellwig <hch at lst.de>

I wonder if we should change the second parameter of
xfs_btree_del_cursor to "int error" to make the life esier for the
callers.