tree d4812f9328ea0f5945c42a6b694bdcdb7bdbd707
parent 0e588859618be54ec100373f1b86296271ce5307
author Sage Weil <sage@newdream.net> 1312999444 +0000
committer Chris Mason <chris.mason@oracle.com> 1313543371 -0400

Btrfs: truncate pages from clone ioctl target range

We need to truncate page cache pages for the clone ioctl target range or
else we'll confuse ourselves to no end.  If the old data was cached, we
used to still see it (until remount).  If the page was partially updated
we used to get a mix of old and new data.

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>