From: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue, 10 Jan 2012 05:42:02 +0000 (-0800)
Subject: sysctl: Rewrite proc_sys_lookup introducing find_entry and lookup_entry.
X-Git-Tag: v3.4-rc1~99^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=076c3eed2c31773200b082568957fd8852ae93d7;p=pandora-kernel.git

sysctl: Rewrite proc_sys_lookup introducing find_entry and lookup_entry.

Replace the helpers that proc_sys_lookup uses with helpers that work
in terms of an entire sysctl directory.  This is worse for sysctl_lock
hold times but it is much better for code clarity and the code cleanups
to come.

find_in_table is no longer needed so it is removed.

find_entry a general helper to find entries in a directory is added.

lookup_entry is a simple wrapper around find_entry that takes the
sysctl_lock increases the use count if an entry is found and drops
the sysctl_lock.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
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