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Commit 1fb58a60 authored Sep 21, 2009 by Sage Weil Committed by Chris Mason Sep 21, 2009

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>

parent 76dda93c

fs/btrfs/ioctl.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -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)