Commit 5f3888ff authored by Li Zefan's avatar Li Zefan Committed by Chris Mason
Browse files

btrfs: Set file size correctly in file clone

Set src_offset = 0, src_length = 20K, dest_offset = 20K. And the
original filesize of the dest file 'file2' is 30K:

  # ls -l /mnt/file2
  -rw-r--r-- 1 root root 30720 Nov 18 16:42 /mnt/file2

Now clone file1 to file2, the dest file should be 40K, but it
still shows 30K:

  # ls -l /mnt/file2
  -rw-r--r-- 1 root root 30720 Nov 18 16:42 /mnt/file2
Signed-off-by: default avatarLi Zefan <>
Signed-off-by: default avatarChris Mason <>
parent 2a6b8dae
......@@ -1873,8 +1873,8 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
* but shouldn't round up the file size
endoff = new_key.offset + datal;
if (endoff > off+olen)
endoff = off+olen;
if (endoff > destoff+olen)
endoff = destoff+olen;
if (endoff > inode->i_size)
btrfs_i_size_write(inode, endoff);
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