---
 free.1         |    2 +-
 proc/sysinfo.c |    9 +++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

--- free.1
+++ free.1	2022-12-15 09:40:32.807087343 +0000
@@ -19,7 +19,7 @@ columns are:
 Total installed memory (MemTotal and SwapTotal in /proc/meminfo)
 .TP
 \fBused\fR
-Used memory (calculated as \fBtotal\fR - \fBfree\fR - \fBbuffers\fR - \fBcache\fR)
+Used memory (calculated as \fBtotal\fR - \fBavailable\fR)
 .TP
 \fBfree\fR
 Unused memory (MemFree and SwapFree in /proc/meminfo)
--- proc/sysinfo.c
+++ proc/sysinfo.c	2022-06-22 11:29:39.240066488 +0000
@@ -794,10 +794,6 @@ nextline:
      where such values will be dramatically distorted over those of the host. */
   if (kb_main_available > kb_main_total)
     kb_main_available = kb_main_free;
-  mem_used = kb_main_total - kb_main_free - kb_main_cached - kb_main_buffers;
-  if (mem_used < 0)
-    mem_used = kb_main_total - kb_main_free;
-  kb_main_used = (unsigned long)mem_used;
 
   /* zero? might need fallback for 2.6.27 <= kernel <? 3.14 */
   if (!kb_main_available) {
@@ -821,6 +817,11 @@ nextline:
       kb_main_available = kb_main_free;
 #endif /* linux */
   }
+
+  mem_used = kb_main_total - kb_main_available;
+  if (mem_used < 0)
+    mem_used = kb_main_total - kb_main_free;
+  kb_main_used = (unsigned long)mem_used;
 }
 
 /*****************************************************************/