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Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h19
1 files changed, 16 insertions, 3 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 83695641bd5e..1ca8e8fd1078 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -739,7 +739,7 @@ static inline bool blk_queue_is_zoned(struct request_queue *q)
}
}
-static inline unsigned int blk_queue_zone_size(struct request_queue *q)
+static inline unsigned int blk_queue_zone_sectors(struct request_queue *q)
{
return blk_queue_is_zoned(q) ? q->limits.chunk_sectors : 0;
}
@@ -1000,6 +1000,19 @@ static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
return blk_rq_cur_bytes(rq) >> 9;
}
+/*
+ * Some commands like WRITE SAME have a payload or data transfer size which
+ * is different from the size of the request. Any driver that supports such
+ * commands using the RQF_SPECIAL_PAYLOAD flag needs to use this helper to
+ * calculate the data transfer size.
+ */
+static inline unsigned int blk_rq_payload_bytes(struct request *rq)
+{
+ if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
+ return rq->special_vec.bv_len;
+ return blk_rq_bytes(rq);
+}
+
static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
int op)
{
@@ -1536,12 +1549,12 @@ static inline bool bdev_is_zoned(struct block_device *bdev)
return false;
}
-static inline unsigned int bdev_zone_size(struct block_device *bdev)
+static inline unsigned int bdev_zone_sectors(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);
if (q)
- return blk_queue_zone_size(q);
+ return blk_queue_zone_sectors(q);
return 0;
}