From: Eric W. Biederman <ebiederm@xmission.com>
Date: Sat, 21 Nov 2009 00:08:56 +0000 (-0800)
Subject: sysfs: Propagate renames to the vfs on demand
X-Git-Tag: v2.6.33-rc1~314^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=832b6af198aefe6034310e124594cc8b833c0ef9;p=pandora-kernel.git

sysfs: Propagate renames to the vfs on demand

By teaching sysfs_revalidate to hide a dentry for
a sysfs_dirent if the sysfs_dirent has been renamed,
and by teaching sysfs_lookup to return the original
dentry if the sysfs dirent has been renamed.  I can
show the results of renames correctly without having to
update the dcache during the directory rename.

This massively simplifies the rename logic allowing a lot
of weird sysfs special cases to be removed along with
a lot of now unnecesary helper code.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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