path: root/include/linux/uio.h
diff options
authorAl Viro <viro@zeniv.linux.org.uk>2014-03-21 04:58:33 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2014-05-06 17:32:53 -0400
commit91f79c43d1b54d7154b118860d81b39bad07dfff (patch)
treea5b142ba57fdabf835476b6dbca24288a78f0c53 /include/linux/uio.h
parentf67da30c1d5fc9e341bc8121708874bfd7b31e45 (diff)
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')
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)