constify blk_rq_map_user_iov() and friends
sg_iovec array passed to it can be const Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@@ -823,8 +823,8 @@ extern int blk_rq_map_user(struct request_queue *, struct request *,
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extern int blk_rq_unmap_user(struct bio *);
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extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
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extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
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struct rq_map_data *, struct sg_iovec *, int,
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unsigned int, gfp_t);
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struct rq_map_data *, const struct sg_iovec *,
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int, unsigned int, gfp_t);
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extern int blk_execute_rq(struct request_queue *, struct gendisk *,
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struct request *, int);
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extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
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