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fix the copy vs. map logics in blk_rq_map_user_iov()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro
2016-04-08 19:05:19 -04:00
parent 03cc0789a6
commit 357f435d8a
3 changed files with 28 additions and 39 deletions
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include/linux/uio.h
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@@ -87,6 +87,7 @@ size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
size_t iov_iter_zero(size_t bytes, struct iov_iter *);
unsigned long iov_iter_alignment(const struct iov_iter *i);
unsigned long iov_iter_gap_alignment(const struct iov_iter *i);
void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov,
unsigned long nr_segs, size_t count);
void iov_iter_kvec(struct iov_iter *i, int direction, const struct kvec *kvec,