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f2fs: avoid copy date to user-space if move file range fail

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If move file range return error, the data copied to user-space is duplicate.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Kinglong Mee 2017-03-10 17:54:26 +08:00 committed by Jaegeuk Kim
parent 087d3d8bae
commit 3cecfa5f67
1 changed files with 2 additions and 0 deletions
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2
fs/f2fs/file.c
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@ -2208,6 +2208,8 @@ static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
range.pos_out, range.len);
mnt_drop_write_file(filp);
if (err)
goto err_out;
if (copy_to_user((struct f2fs_move_range __user *)arg,
&range, sizeof(range)))