iov_iter: Add copy_folio_to_iter()

This wrapper around copy_page_to_iter() works because copy_page_to_iter() handles compound pages correctly.

Matthew Wilcox (Oracle) committed 5 years ago

Commit d9c19d31 parent 10331791 file · +7 −0Browse files

Showing the changes to include (1 of 1 file). Show all

Unified · Split

@@ -7,6 +7,7 @@ · 6 unmodified lines
7	7
8	8	#include <linux/kernel.h>
9	9	#include <linux/thread_info.h>
	10	+#include <linux/mm_types.h>
10	11	#include <uapi/linux/uio.h>
11	12
12	13	struct page;
@@ -146,6 +147,12 @@ size_t _copy_to_iter(const void addr, size_t bytes, struct iov_iter i); · 133 unmodified lines
146	147	size_t _copy_from_iter(void addr, size_t bytes, struct iov_iter i);
147	148	size_t _copy_from_iter_nocache(void addr, size_t bytes, struct iov_iter i);
148	149
	150	+static inline size_t copy_folio_to_iter(struct folio *folio, size_t offset,
	151	+ size_t bytes, struct iov_iter *i)
	152	+{
	153	+ return copy_page_to_iter(&folio->page, offset, bytes, i);
	154	+}
	155	+
149	156	static __always_inline __must_check
150	157	size_t copy_to_iter(const void addr, size_t bytes, struct iov_iter i)
151	158	{

Keyboard shortcuts