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

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>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c3c4756..cbde4d2 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -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)))