diff options
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f87552a1d7e..1b61dab6406 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1788,7 +1788,10 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, memcpy(&new_key, &key, sizeof(new_key)); new_key.objectid = inode->i_ino; - new_key.offset = key.offset + destoff - off; + if (off <= key.offset) + new_key.offset = key.offset + destoff - off; + else + new_key.offset = destoff; trans = btrfs_start_transaction(root, 1); if (IS_ERR(trans)) { |