On 2019/4/7 下午3:04, Christoph Hellwig wrote:
>> +	[BLK_STS_UCLEAN]	= { -EUCLEAN,	"structure needs cleaning" },
> 
> The subject line doesn't mention this new error code.  That being said
> while this sounds slightly less bad than the original name it still
> sounds weird..
> 
> The various filesystems really use EFSCORRUPTED which is just mapped
> to EUCLEAN, so maybe this really should be
> 
> 	[BLK_STS_FSCORRUPTED]	=
> 		{ -EUCLEAN, "file system corruption detected" },
> 
> But then again I really wonder why you need to pass this information
> through a blk_status_t to start with.  In general these kinds of error
> should be passed through file system specific errno fields.
> 

For functions called in endio hook, we return blk_status_t.
Or for case like hook before submitting bio, we set bio->bi_status to
record it.

Yes, it's possible to restore such info into fs specific structure, but
why not reuse the bi_status we all use and love?

Thanks,
Qu