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f2fs: no need to make zeros beyond i_size 

We don't need to make zeros beyond i_size, since we already wrote that through
NEW_ADDR case.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-09-06 13:31:56 -07:00
parent 7732c26ac3
commit 68f313935f
1 changed files with 0 additions and 9 deletions
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9
fs/f2fs/data.c
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@ -1647,15 +1647,6 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping,
if (PageUptodate(page))
goto out_clear;
if ((pos & PAGE_MASK) >= i_size_read(inode)) {
unsigned start = pos & (PAGE_SIZE - 1);
unsigned end = start + len;
/* Reading beyond i_size is simple: memset to zero */
zero_user_segments(page, 0, start, end, PAGE_SIZE);
goto out_update;
}
if (blkaddr == NEW_ADDR) {
zero_user_segment(page, 0, PAGE_SIZE);
} else {