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| author | Sage Weil <sage@newdream.net> | 2009-09-21 22:00:27 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2009-09-21 22:00:27 +0200 |
| commit | 1fb58a6051cd904a9f8e0344b22e31921d6b5a4d (patch) | |
| tree | 2f8c1a89b3e4f119590e89cebe1a5be1a02f487a /fs | |
| parent | Btrfs: add snapshot/subvolume destroy ioctl (diff) | |
| download | linux-1fb58a6051cd904a9f8e0344b22e31921d6b5a4d.tar.xz linux-1fb58a6051cd904a9f8e0344b22e31921d6b5a4d.zip | |
Btrfs: fix arithmetic error in clone ioctl
Fix an arithmetic error that was breaking extents cloned via the clone
ioctl starting in the second half of a file.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ioctl.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a13fd556db74..a8577a7f26ab 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1105,8 +1105,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, datao += off - key.offset; datal -= off - key.offset; } - if (key.offset + datao + datal + key.offset > - off + len) + if (key.offset + datao + datal > off + len) datal = off + len - key.offset - datao; /* disko == 0 means it's a hole */ if (!disko) |