Commit 4d93874b authored by Chaitanya Kulkarni's avatar Chaitanya Kulkarni Committed by Theodore Ts'o
Browse files

ext4: use memcpy_from_page() in pagecache_read() 



Signed-off-by: default avatarChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210207190425.38107-6-chaitanya.kulkarni@wdc.com


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 0d02ec6b

fs/ext4/verity.c

+1 −4
Original line number Diff line number Diff line
@@ -45,16 +45,13 @@ static int pagecache_read(struct inode *inode, void *buf, size_t count, 
		size_t n = min_t(size_t, count,

				 PAGE_SIZE - offset_in_page(pos));

		struct page *page;

		void *addr;



		page = read_mapping_page(inode->i_mapping, pos >> PAGE_SHIFT,

					 NULL);

		if (IS_ERR(page))

			return PTR_ERR(page);



		addr = kmap_atomic(page);

		memcpy(buf, addr + offset_in_page(pos), n);

		kunmap_atomic(addr);

		memcpy_from_page(buf, page, offset_in_page(pos), n);



		put_page(page);