From: Liu Bo <bo.li.liu@oracle.com>
Date: Fri, 9 May 2014 02:01:02 +0000 (+0800)
Subject: Btrfs: fix EIO on reading file after ioctl clone works on it
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~154^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d3ecfcdf9108c833e4e501bfa02ecf673a0ace59;p=pandora-kernel.git

Btrfs: fix EIO on reading file after ioctl clone works on it

For inline data extent, we need to make its length aligned, otherwise,
we can get a phantom extent map which confuses readpages() to return -EIO.

This can be detected by xfstests/btrfs/035.

Reported-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
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