From 1ef255e257173f4bc44317ef2076e7e0de688fdf Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 9 Jun 2022 10:28:36 -0400 Subject: iov_iter: advancing variants of iov_iter_get_pages{,_alloc}() Most of the users immediately follow successful iov_iter_get_pages() with advancing by the amount it had returned. Provide inline wrappers doing that, convert trivial open-coded uses of those. BTW, iov_iter_get_pages() never returns more than it had been asked to; such checks in cifs ought to be removed someday... Reviewed-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/uio.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include') diff --git a/include/linux/uio.h b/include/linux/uio.h index e7fc29b5ad19..b70d28693400 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -351,4 +351,24 @@ static inline void iov_iter_ubuf(struct iov_iter *i, unsigned int direction, }; } +static inline ssize_t iov_iter_get_pages2(struct iov_iter *i, struct page **pages, + size_t maxsize, unsigned maxpages, size_t *start) +{ + ssize_t res = iov_iter_get_pages(i, pages, maxsize, maxpages, start); + + if (res >= 0) + iov_iter_advance(i, res); + return res; +} + +static inline ssize_t iov_iter_get_pages_alloc2(struct iov_iter *i, struct page ***pages, + size_t maxsize, size_t *start) +{ + ssize_t res = iov_iter_get_pages_alloc(i, pages, maxsize, start); + + if (res >= 0) + iov_iter_advance(i, res); + return res; +} + #endif -- cgit v1.2.3