[PATCH 07/18] xfs: check for buffer errors before waiting

[Mark Tinguely]

On 04/13/12 07:10, Dave Chinner wrote:
> From: Dave Chinner<dchinner at redhat.com>
>
> If we call xfs_buf_iowait() on a buffer that failed dispatch due to
> an IO error, it will wait forever for an Io that does not exist.
> This is hndled in xfs_buf_read, but there is other code that calls
> xfs_buf_iowait directly that doesn't.
>
> Rather than make the call sites have to handle checking for dispatch
> errors and then checking for completion errors, make
> xfs_buf_iowait() check for dispatch errors on the buffer before
> waiting. This means we handle both dispatch and completion errors
> with one set of error handling at the caller sites.
>
> Signed-off-by: Dave Chinner<dchinner at redhat.com>
> Reviewed-by: Christoph Hellwig<hch at lst.de>
> ---

Looks good.

Reviewed-by: Mark Tinguely <tinguely at sgi.com>