diff mbox

[RESEND,V5,13/33] block: introduce rq_for_each_segment()

Message ID 20180525034621.31147-14-ming.lei@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ming Lei May 25, 2018, 3:46 a.m. UTC 
There are still cases in which rq_for_each_segment() is required, for
example, loop.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
 include/linux/blkdev.h | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1e8e9b430008..0b15bc625bd7 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -953,6 +953,10 @@  struct req_iterator {
 	__rq_for_each_bio(_iter.bio, _rq)			\
 		bio_for_each_page(bvl, _iter.bio, _iter.iter)
 
+#define rq_for_each_segment(bvl, _rq, _iter)			\
+	__rq_for_each_bio(_iter.bio, _rq)			\
+		bio_for_each_segment(bvl, _iter.bio, _iter.iter)
+
 #define rq_iter_last(bvec, _iter)				\
 		(_iter.bio->bi_next == NULL &&			\
 		 bio_iter_last(bvec, _iter.iter))