From: Srinivas Eeda <srinivas.eeda@oracle.com>
Date: Tue, 5 Oct 2010 22:53:06 +0000 (-0700)
Subject: ocfs2: validate bg_free_bits_count after update
X-Git-Tag: v2.6.37-rc1~182^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b5cd10e4c14a1a642076ace6a73be3d33c91fb6;p=pandora-kernel.git

ocfs2: validate bg_free_bits_count after update

This patch adds a safe check to ensure bg_free_bits_count doesn't exceed
bg_bits in a group descriptor. This is to avoid on disk corruption that was
seen recently.

debugfs: group <52803072>
       Group Chain: 179   Parent Inode: 11  Generation: 2959379682
       CRC32: 00000000   ECC: 0000
       ##   Block#            Total    Used     Free     Contig   Size
       0    52803072          32256    4294965350   34202    18207    4032
       ......

Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
---

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