From: Josef Bacik <jbacik@fusionio.com>
Date: Mon, 14 Oct 2013 21:23:08 +0000 (-0400)
Subject: Btrfs: fix hole check in log_one_extent
X-Git-Tag: v3.13-rc1~85^2~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed9e8af88e2551aaa6bf51d8063a2493e2d71597;p=pandora-kernel.git

Btrfs: fix hole check in log_one_extent

I added an assert to make sure we were looking up aligned offsets for csums and
I tripped it when running xfstests.  This is because log_one_extent was checking
if block_start == 0 for a hole instead of EXTENT_MAP_HOLE.  This worked out fine
in practice it seems, but it adds a lot of extra work that is uneeded.  With
this fix I'm no longer tripping my assert.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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