[dm-devel] [PATCH 4/6] block: open code blk_max_size_offset in blk_rq_get_max_sectors

[Christoph Hellwig]

blk_rq_get_max_sectors always uses q->limits.chunk_sectors as the
chunk_sectors argument, and already checks for max_sectors through the
call to blk_queue_get_max_sectors.  That means much of
blk_max_size_offset is not needed and open coding it simplifies the code.

Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 block/blk-merge.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 8ed50952e93ad..3e9dde152fdcd 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -605,8 +605,8 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq,
 	    req_op(rq) == REQ_OP_DISCARD ||
 	    req_op(rq) == REQ_OP_SECURE_ERASE)
 		return max_sectors;
-
-	return min(max_sectors, blk_max_size_offset(q, offset, 0));
+	return min(max_sectors,
+		   blk_chunk_sectors_left(offset, q->limits.chunk_sectors));
 }
 
 static inline int ll_new_hw_segment(struct request *req, struct bio *bio,
-- 
2.30.2