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Btrfs: truncate pages from clone ioctl target range
authorSage Weil <sage@newdream.net>
Wed, 10 Aug 2011 18:04:04 +0000 (18:04 +0000)
committerChris Mason <chris.mason@oracle.com>
Wed, 17 Aug 2011 01:09:31 +0000 (21:09 -0400)
commitf81c9cdc567cd3160ff9e64868d9a1a7ee226480
treed4812f9328ea0f5945c42a6b694bdcdb7bdbd707tree
parent0e588859618be54ec100373f1b86296271ce5307commit | diff
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>
fs/btrfs/ioctl.c diff | blob | history
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