-d with -k doesn't work

What steps will reproduce the problem?
1. This patch seems to indicate that -k option works with -d:
http://consoleninja.net/gitweb/gitweb.cgi?p=memcached.git;a=commit;h=7391190f7ff
652e662a490d4ca0409dc33fba283

2. When I run without -d, I correctly get an error that I need to increase my 
locked memory limit:
[root@memcache01 ~]# memcached -p 11211 -u memcached -m 1536 -c 1024 -k
warning: -k invalid, mlockall() failed: Cannot allocate memory
^CSIGINT handled.

3. But when I run the same command with -d, it seems to run fine, even
though I have not increased my locked memory limit:
[root@memcache01 ~]# memcached -d -p 11211 -u memcached -m 1536 -c 1024 -k
[root@memcache01 ~]# ps -ef | grep [m]emcached
496      19867     1  0 13:14 ?        00:00:00 memcached -d -p 11211 -u 
memcached -m 1536 -c 1024 -k

What is the expected output? What do you see instead?

Expected: should give me "Cannot allocate memory" warning.

Instead: it runs normally.

What version of the product are you using? On what operating system?

1.4.15 on CentOS-6.3 with kernel 2.6.32-279.5.1.el6.x86_64

Please provide any additional information below.

Original issue reported on code.google.com by joh...@paperlesspost.com on 14 Nov 2012 at 11:37

Hughen / memcached

-d with -k doesn't work #298