[PATCH] /proc/meminfo alterations for hugetlbpages

The patch from Rohit and David M-T changes the hugetlb page info in
/proc/meminfo slightly.

It makes the identifiers a little clearer while ensuring that we don't
add any identifiers which have whitespace.  glibc is/shall be parsing
this information to determine the size and alignment requirements of
the hugetlb pages.

This basically means that procfs is a requirement for successful
hugetlb page usage.  Not very nice, but I suspect real-world userspace
fails without procfs anyway.

fs/proc/proc_misc.c

@@ -202,9 +202,9 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 	{
 		extern unsigned long htlbpagemem, htlbzone_pages;
 		len += sprintf(page + len,
-				"HugePages:    %8lu\n"
-				"Available:    %8lu\n"
-				"Size:         %8lu kB\n",
+				"HugePages_Total: %5lu\n"
+				"HugePages_Free:  %5lu\n"
+				"Hugepagesize:    %5lu kB\n",
 				htlbzone_pages,
 				htlbpagemem,
 				HPAGE_SIZE/1024);