block: better deal with the delayed not supported case in blk_cloned_rq_check_limits
If WRITE_ZERO/WRITE_SAME operation is not supported by the storage, blk_cloned_rq_check_limits() will return IO error which will cause device-mapper to fail the paths. Instead, if the queue limit is set to 0, return BLK_STS_NOTSUPP. BLK_STS_NOTSUPP will be ignored by device-mapper and will not fail the paths. Suggested-by:Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Ritika Srivastava <ritika.srivastava@oracle.com> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
143d2600
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