tree bdc23c9fcc4bfe58787b63e9c739c0692b79dc4d
parent 1836d95928a0f41ada0cbb2a6c4e46b027db9491
author Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1257175553 +0900
committer Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1257219096 +0900

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>