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ext4: use memcpy_to_page() in pagecache_write()

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[ Upstream commit bd256fda92efe97b692dc72e246d35fa724d42d8 ]

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210207190425.38107-7-chaitanya.kulkarni@wdc.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Stable-dep-of: 956510c0c743 ("fs: ext4: initialize fsdata in pagecache_write()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chaitanya Kulkarni
2021-02-07 11:04:23 -08:00
committed by Greg Kroah-Hartman
parent 60d4383c1b
commit b33e42d65e
1 changed files with 1 additions and 4 deletions
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5
fs/ext4/verity.c
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@@ -80,7 +80,6 @@ static int pagecache_write(struct inode *inode, const void *buf, size_t count,
PAGE_SIZE - offset_in_page(pos)); PAGE_SIZE - offset_in_page(pos));
struct page *page; struct page *page;
void *fsdata; void *fsdata;
void *addr;
int res; int res;
res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0, res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0,
@@ -88,9 +87,7 @@ static int pagecache_write(struct inode *inode, const void *buf, size_t count,
if (res) if (res)
return res; return res;
addr = kmap_atomic(page); memcpy_to_page(page, offset_in_page(pos), buf, n);
memcpy(addr + offset_in_page(pos), buf, n);
kunmap_atomic(addr);
res = pagecache_write_end(NULL, inode->i_mapping, pos, n, n, res = pagecache_write_end(NULL, inode->i_mapping, pos, n, n,
page, fsdata); page, fsdata);