From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 17 Nov 2011 06:00:31 +0000 (-0500)
Subject: btrfs: preparation to fixing mount/umount race
X-Git-Tag: v3.3-rc1~25^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98c7089c769048f941bd5c5285287f8fc301f8b1;p=pandora-kernel.git

btrfs: preparation to fixing mount/umount race

We need fs_info and root to live until the moment when the victim
superblock leaves the list, so we need to postpone free_fs_info()
until after ->put_super().  The call is buried in close_ctree(),
though, so we need to lift it into the callers (including
btrfs_put_super()) first.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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