From: Dave Chinner <dchinner@redhat.com>
Date: Tue, 22 Mar 2011 11:23:41 +0000 (+1100)
Subject: fs: move i_wb_list out from under inode_lock
X-Git-Tag: v2.6.39-rc1~75^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a66979abad090b2765a6c6790c9fdeab996833f2;p=pandora-kernel.git

fs: move i_wb_list out from under inode_lock

Protect the inode writeback list with a new global lock
inode_wb_list_lock and use it to protect the list manipulations and
traversals. This lock replaces the inode_lock as the inodes on the
list can be validity checked while holding the inode->i_lock and
hence the inode_lock is no longer needed to protect the list.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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