mlockall() failes on amd64

[Christos Zoulas]

On Sep 16,  2:55pm, danny at cs.huji.ac.il (Danny Braniss) wrote:
-- Subject: mlockall() failes on amd64

| with am-utils  6.1.5, on a amd64 6.1-STABLE kernel i see:
| 	Couldn't lock process pages in memory using mlockall()
| while it's ok on a i386:
| 	Locked process pages in memory
| 

We should really fix amd to print the errno string when system calls
fail; now we can only scratch our heads.

christos