From: Jie Liu <jeff.liu@oracle.com>
Date: Fri, 25 Oct 2013 06:52:44 +0000 (+0800)
Subject: xfs: fix the extent count when allocating an new indirection array entry
X-Git-Tag: v3.13-rc1~87^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb86d21cba22a045b09d11b71decf5ca7c3d5def;p=pandora-kernel.git

xfs: fix the extent count when allocating an new indirection array entry

At xfs_iext_add(), if extent(s) are being appended to the last page in
the indirection array and the new extent(s) don't fit in the page, the
number of extents(erp->er_extcount) in a new allocated entry should be
the minimum value between count and XFS_LINEAR_EXTS, instead of count.

For now, there is no existing test case can demonstrates a problem with
the er_extcount being set incorrectly here, but it obviously like a bug.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
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