[PATCH 5.17 363/772] block: Fix the bio.bi_opf comment

Greg Kroah-Hartman
2022-06-07T21:07:07Z

From: Bart Van Assche <bvanassche@acm.org>

[ Upstream commit 5d2ae14276e698c76fa0c8ce870103f343b38263 ]

Commit ef295ecf090d modified the Linux kernel such that the bottom bits
of the bi_opf member contain the operation instead of the topmost bits.
That commit did not update the comment next to bi_opf. Hence this patch.

>From commit ef295ecf090d:
-#define bio_op(bio) ((bio)->bi_opf >> BIO_OP_SHIFT)
+#define bio_op(bio) ((bio)->bi_opf & REQ_OP_MASK)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Fixes: ef295ecf090d ("block: better op and flags encoding")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220511235152.1082246-1-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/blk_types.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 86c0f85df8bb..fa6e14b2763f 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -237,9 +237,8 @@ typedef unsigned int blk_qc_t;
struct bio {
struct bio *bi_next; /* request queue link */
struct block_device *bi_bdev;
- unsigned int bi_opf; /* bottom bits req flags,
- * top bits REQ_OP. Use
- * accessors.
+ unsigned int bi_opf; /* bottom bits REQ_OP, top bits
+ * req_flags.
*/
unsigned short bi_flags; /* BIO_* below */
unsigned short bi_ioprio;
--
2.35.1