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authorMing Lei <ming.lei@canonical.com>2016-05-30 16:34:31 +0300
committerJens Axboe <axboe@fb.com>2016-06-09 19:02:47 +0300
commit80f162ff061c9e280589bb1a1890c7fc21c932cd (patch)
treeaaffaa424060a86b218e9c230a76e823467efa53
parent0781e79eb206a62c30cc3eff75aaa889cd85b276 (diff)
downloadlinux-80f162ff061c9e280589bb1a1890c7fc21c932cd.tar.xz
block: mark 1st parameter of bvec_iter_advance as const
bvec_iter_advance() only writes the parameter of iterator, so the base address of bvec can be marked as const safely. Without the change, we can see compiling warning in the following patch for implementing iterate_bvec(): lib/iov_iter.c with bvec iterator. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <ming.lei@canonical.com> Tested-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--include/linux/bvec.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 096efd2c83e5..701b64a3b7c5 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -66,7 +66,8 @@ struct bvec_iter {
.bv_offset = bvec_iter_offset((bvec), (iter)), \
})
-static inline void bvec_iter_advance(struct bio_vec *bv, struct bvec_iter *iter,
+static inline void bvec_iter_advance(const struct bio_vec *bv,
+ struct bvec_iter *iter,
unsigned bytes)
{
WARN_ONCE(bytes > iter->bi_size,