---
 free.1         |    6 ++++++
 free.c         |    6 +++++-
 proc/sysinfo.c |   16 ++++++++++------
 proc/sysinfo.h |    5 +++++
 4 files changed, 26 insertions(+), 7 deletions(-)

--- free.1
+++ free.1	2015-01-23 15:25:22.093559404 +0000
@@ -48,6 +48,13 @@ display the units of print out.  Followi
 If unit is missing, and you have petabyte of RAM or swap, the number is in
 terabytes and columns might not be aligned with header.
 .TP
+\fB\-C\fR, \fB\-\-full\-cache\fR
+Add to the plain \fBCached\fR in-memory cache for files also more cache lines as
+the \fBNFS_Unstable\fR pages sent to the server, but not yet committed to stable storage,
+the \fBSReclaimable\fR as part of \fISlab\fR, that might be reclaimed, such as caches,
+and the \fBSwapCached\fR memory that once was swapped out but is swapped back.
+Can be also enabled by the environment variable \fBPS_FULL_CACHE\fR.
+.TP
 \fB\-c\fR, \fB\-\-count\fR \fIcount\fR
 Display the result
 .I count
--- free.c
+++ free.c	2015-01-23 15:14:07.186228830 +0000
@@ -213,6 +213,7 @@ int main(int argc, char **argv)
 		{  "total",	no_argument,	    NULL,  't'		},
 		{  "seconds",	required_argument,  NULL,  's'		},
 		{  "count",	required_argument,  NULL,  'c'		},
+		{  "full-cache",required_argument,  NULL,  'C'		},
 		{  "help",	no_argument,	    NULL,  HELP_OPTION	},
 		{  "version",	no_argument,	    NULL,  'V'		},
 		{  NULL,	0,		    NULL,  0		}
@@ -231,7 +232,7 @@ int main(int argc, char **argv)
 	textdomain(PACKAGE);
 	atexit(close_stdout);
 
-	while ((c = getopt_long(argc, argv, "bkmghlotc:s:V", longopts, NULL)) != -1)
+	while ((c = getopt_long(argc, argv, "bkmghlotCc:s:V", longopts, NULL)) != -1)
 		switch (c) {
 		case 'b':
 			args.exponent = 1;
@@ -281,6 +282,9 @@ int main(int argc, char **argv)
 			  error(EXIT_FAILURE, ERANGE,
 				  _("failed to parse count argument: '%s'"), optarg);
 			break;
+		case 'C':
+			setenv("PS_FULL_CACHE", "yes", 1);
+			break;
 		case HELP_OPTION:
 			usage(stdout);
 		case 'V':
--- proc/sysinfo.c
+++ proc/sysinfo.c	2015-01-23 15:08:35.381519221 +0000
@@ -3,6 +3,7 @@
  * Copyright (C) 1992-1998 by Michael K. Johnson, johnsonm@redhat.com
  * Copyright 1998-2003 Albert Cahalan
  * June 2003, Fabian Frederick, disk and slab info
+ * Copyright (c) 2008 Bart Van Assche.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -598,17 +599,18 @@ static unsigned long kb_vmalloc_chunk;
 static unsigned long kb_vmalloc_total;
 static unsigned long kb_vmalloc_used;
 // seen on 2.6.24-rc6-git12
-static unsigned long kb_anon_pages;
-static unsigned long kb_bounce;
-static unsigned long kb_commit_limit;
-static unsigned long kb_nfs_unstable;
-static unsigned long kb_swap_reclaimable;
-static unsigned long kb_swap_unreclaimable;
+unsigned long kb_anon_pages;
+unsigned long kb_bounce;
+unsigned long kb_commit_limit;
+unsigned long kb_nfs_unstable;
+unsigned long kb_swap_reclaimable;
+unsigned long kb_swap_unreclaimable;
 
 void meminfo(void){
   char namebuf[16]; /* big enough to hold any row name */
   mem_table_struct findme = { namebuf, NULL};
   mem_table_struct *found;
+  const char *ev;
   char *head;
   char *tail;
   static const mem_table_struct mem_table[] = {
@@ -684,6 +686,8 @@ nextline:
   }
   kb_swap_used = kb_swap_total - kb_swap_free;
   kb_main_used = kb_main_total - kb_main_free;
+  if ((ev=getenv("PS_FULL_CACHE")))
+  kb_main_cached += kb_swap_reclaimable + kb_swap_cached + kb_nfs_unstable;
 }
 
 /*****************************************************************/
--- proc/sysinfo.h
+++ proc/sysinfo.h	2012-06-01 15:10:57.000000000 +0000
@@ -31,6 +31,11 @@ extern unsigned long kb_main_total;
 extern unsigned long kb_swap_free;
 extern unsigned long kb_swap_total;
 /* recently introduced */
+extern unsigned long kb_anon_pages;
+extern unsigned long kb_bounce;
+extern unsigned long kb_nfs_unstable;
+extern unsigned long kb_slab_reclaimable;
+extern unsigned long kb_slab_unreclaimable;
 extern unsigned long kb_high_free;
 extern unsigned long kb_high_total;
 extern unsigned long kb_low_free;