[PATCH v1 18/54] bvec_iter: introduce BVEC_ITER_ALL_INIT

From	Ming Lei <tom.leiming@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH v1 18/54] bvec_iter: introduce BVEC_ITER_ALL_INIT
Date	2016-12-27 17:10 +0100
Message-ID	<sT2u5-4eA-7@gated-at.bofh.it> (permalink)
References	<sT2u5-4eA-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Introduce BVEC_ITER_ALL_INIT for iterating one bio
from start to end.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
 include/linux/bvec.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index f8a8b293cd32..5c51c58fe202 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -183,4 +183,13 @@ static inline void bvec_iter_advance_mp(const struct bio_vec *bv,
 		((bvl = bvec_iter_bvec((bio_vec), (iter))), 1);	\
 	     bvec_iter_advance((bio_vec), &(iter), (bvl).bv_len))
 
+/* for iterating one bio from start to end */
+#define BVEC_ITER_ALL_INIT (struct bvec_iter)				\
+{									\
+	.bi_sector	= 0,						\
+	.bi_size	= UINT_MAX,					\
+	.bi_idx		= 0,						\
+	.bi_bvec_done	= 0,						\
+}
+
 #endif /* __LINUX_BVEC_ITER_H */
-- 
2.7.4

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH v1 18/54] bvec_iter: introduce BVEC_ITER_ALL_INIT Ming Lei <tom.leiming@gmail.com> - 2016-12-27 17:10 +0100

csiph-web