Commit d525e8ab authored by Li Zefan's avatar Li Zefan Committed by Chris Mason

Btrfs: add dummy extent if dst offset excceeds file end in

You can see there's no file extent with range [0, 4096]. Check this by

 # btrfsck /dev/sda7
 root 5 inode 258 errors 100
Signed-off-by: default avatarLi Zefan <>
Signed-off-by: default avatarChris Mason <>
parent d72c0842
......@@ -2228,6 +2228,12 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
!IS_ALIGNED(destoff, bs))
goto out_unlock;
if (destoff > inode->i_size) {
ret = btrfs_cont_expand(inode, inode->i_size, destoff);
if (ret)
goto out_unlock;
/* do any pending delalloc/csum calc on src, one way or
another, and lock file content */
while (1) {
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