From: Eric W. Biederman <ebiederm@xmission.com>
Date: Wed, 18 Jan 2012 11:15:51 +0000 (-0800)
Subject: sysctl: Rewrite proc_sys_readdir in terms of first_entry and next_entry
X-Git-Tag: v3.4-rc1~99^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a75ce167c53b41f15088d3c2c7e51c89dc8798a;p=pandora-kernel.git

sysctl: Rewrite proc_sys_readdir in terms of first_entry and next_entry

Replace sysctl_head_next with first_entry and next_entry.  These new
iterators operate at the level of sysctl table entries and filter
out any sysctl tables that should not be shown.

Utilizing two specialized functions instead of a single function removes
conditionals for handling awkward special cases that only come up
at the beginning of iteration, making the iterators easier to read
and understand.

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