nvme: implement REQ_OP_WRITE_ZEROES
But now for the real NVMe Write Zeroes yet, just to get rid of the
discard abuse for zeroing. Also rename the quirk flag to be a bit
more self-explanatory.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 9eecb67..a317461 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -66,10 +66,10 @@ enum nvme_quirks {
NVME_QUIRK_IDENTIFY_CNS = (1 << 1),
/*
- * The controller deterministically returns O's on reads to discarded
- * logical blocks.
+ * The controller deterministically returns O's on reads to
+ * logical blocks that deallocate was called on.
*/
- NVME_QUIRK_DISCARD_ZEROES = (1 << 2),
+ NVME_QUIRK_DEALLOCATE_ZEROES = (1 << 2),
/*
* The controller needs a delay before starts checking the device
