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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2014-03-21 04:58:33 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-05-06 17:32:53 -0400 |
| commit | 91f79c43d1b54d7154b118860d81b39bad07dfff (patch) | |
| tree | a5b142ba57fdabf835476b6dbca24288a78f0c53 /include/linux/uio.h | |
| parent | new helper: iov_iter_npages() (diff) | |
| download | linux-dev-91f79c43d1b54d7154b118860d81b39bad07dfff.tar.xz linux-dev-91f79c43d1b54d7154b118860d81b39bad07dfff.zip | |
new helper: iov_iter_get_pages_alloc()
same as iov_iter_get_pages(), except that pages array is allocated
(kmalloc if possible, vmalloc if that fails) and left for caller to
free. Lustre and NFS ->direct_IO() switched to it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/uio.h')
| -rw-r--r-- | include/linux/uio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 2f8825b06680..4876e9f2a58f 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -73,6 +73,8 @@ void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov, unsigned long nr_segs, size_t count); ssize_t iov_iter_get_pages(struct iov_iter *i, struct page **pages, size_t maxsize, size_t *start); +ssize_t iov_iter_get_pages_alloc(struct iov_iter *i, struct page ***pages, + size_t maxsize, size_t *start); int iov_iter_npages(const struct iov_iter *i, int maxpages); static inline size_t iov_iter_count(struct iov_iter *i) |