Re: [RFC PATCH 1/4] convert block layer drivers to blkerr error values

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On Wed, Aug 24, 2005 at 04:03:58AM -0500, Mike Christie wrote:

> -#define end_io_error(uptodate)	(unlikely((uptodate) <= 0))
> +enum {
> +	BLK_SUCCESS = 0,	/* Must be zero for compat with old usage */
> +	BLKERR_IO,		/* Generic I/O error */
> +	BLKERR_NOTSUPP,		/* Operation is not supported */
> +	BLKERR_WOULDBLOCK,	/* Operation would block */
> +	BLKERR_FATAL_DRV,	/* Fatal driver error */
> +	BLKERR_FATAL_DEV,	/* Fatal device error */
> +	BLKERR_FATAL_XPT,	/* Fatal transport error */
> +	BLKERR_RETRY_DRV,	/* Driver error, I/O may be retried */
> +	BLKERR_RETRY_DEV,	/* Device error, I/O may be retried */
> +	BLKERR_RETRY_XPT,	/* Transport error, I/O may retried */
> +};

Do you need to add and use a BLKERR_TIMEOUT? As we can't determine the
problem area for a timeout, and if it can or should be retried.

-- Patrick Mansfield
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