From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Mon, 2 Nov 2009 15:25:53 +0000 (+0900)
Subject: nilfs2: fix dirty page accounting leak causing hang at write
X-Git-Tag: v2.6.32-rc6~8^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1e19e5601277845b4f17ecd7c9ba04f73ee11aa;p=pandora-kernel.git

nilfs2: fix dirty page accounting leak causing hang at write

Bruno Prémont and Dunphy, Bill noticed me that NILFS will certainly
hang on ARM-based targets.

I found this was caused by an underflow of dirty pages counter.  A
b-tree cache routine was marking page dirty without adjusting page
account information.

This fixes the dirty page accounting leak and resolves the hang on
arm-based targets.

Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Reported-by: Dunphy, Bill <WDunphy@tandbergdata.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: stable <stable@kernel.org>
---

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