From: Mark Fasheh <mfasheh@suse.de>
Date: Tue, 30 Jun 2015 21:42:07 +0000 (-0700)
Subject: btrfs: allow dedupe of same inode
X-Git-Tag: omap-for-v4.2/fixes-rc2-v2~20^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0efa9f48c7e6c15e75946dd2b1c82d3d19e13545;p=pandora-kernel.git

btrfs: allow dedupe of same inode

clone() supports cloning within an inode so extent-same can do
the same now. This patch fixes up the locking in extent-same to
know about the single-inode case. In addition to that, we add a
check for overlapping ranges, which clone does not allow.

Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
---

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