From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Wed, 27 May 2009 13:44:34 +0000 (+0900)
Subject: nilfs2: add sync_page method to page caches of meta data
X-Git-Tag: v2.6.31-rc1~333^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa032744ad41de1b0a1807e7c379c6196e72ad80;p=pandora-kernel.git

nilfs2: add sync_page method to page caches of meta data

This applies block_sync_page() function to the sync_page method of
page caches for meta data files, gc page caches, and btree node
buffers.  This is a companion patch of ("nilfs2: enable sync_page
mothod") which applied the function for data pages.

This allows lock_page() for those meta data to unplug pending bio
requests.

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