[PATCH 2/5] metadump: support writing discontiguous io cursors

[Christoph Hellwig]

On Thu, Jan 23, 2014 at 09:23:52PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> To handle discontiguous buffers, metadump needs to be able to handle
> io cursrors that use discontiguous buffer mappings. Factor
> write_buf() to extract the data copy routine and use that to
> implement support for both flat and discontiguous buffer maps.
> 
> Signed-off-by: Dave Chinner <dchinner at redhat.com>

Looks good,

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