From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Sat, 10 Oct 2009 13:58:10 +0000 (+0900)
Subject: nilfs2: get rid of BUG_ON use in btree lookup routines
X-Git-Tag: v2.6.33-rc1~322^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b945d537db86557e5b5820b4b52df94c35b3829;p=pandora-kernel.git

nilfs2: get rid of BUG_ON use in btree lookup routines

The current btree lookup routines make a kernel oops when detected
inconsistency in btree blocks.  These routines should instead return a
proper error code because the inconsistency usually comes from
corruption of on-disk metadata.

This fixes the issue by converting BUG_ON calls to proper error
handlings.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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