[PATCH V6 13/30] block: introduce rq_for_each_chunk()

Ming Lei
2018-06-09T12:33:17Z

There are still cases in which rq_for_each_chunk() 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 --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index bca3a92eb55f..4eaba73c784a 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -941,6 +941,10 @@ struct req_iterator {
__rq_for_each_bio(_iter.bio, _rq) \
bio_for_each_segment(bvl, _iter.bio, _iter.iter)

+#define rq_for_each_chunk(bvl, _rq, _iter) \
+ __rq_for_each_bio(_iter.bio, _rq) \
+ bio_for_each_chunk(bvl, _iter.bio, _iter.iter)
+
#define rq_iter_last(bvec, _iter) \
(_iter.bio->bi_next == NULL && \
bio_iter_last(bvec, _iter.iter))
--
2.9.5