From 9aaffd6b26c4502167b1a83582516e82128da093 Mon Sep 17 00:00:00 2001
From: aristocratos <gnmjpl@gmail.com>
Date: Wed, 30 Nov 2022 22:41:08 +0100
Subject: [PATCH] Fixed: Use MemFree for used mem calculation if MemAvailable
 is greater than MemTotal.

---
 src/linux/btop_collect.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/linux/btop_collect.cpp b/src/linux/btop_collect.cpp
index cec781d..997e194 100644
--- a/src/linux/btop_collect.cpp
+++ b/src/linux/btop_collect.cpp
@@ -901,7 +901,8 @@ namespace Mem {
 				mem.stats.at("cached") += arc_size;
 				mem.stats.at("available") += arc_size;
 			}
-			mem.stats.at("used") = totalMem - mem.stats.at("available");
+			mem.stats.at("used") = totalMem - (mem.stats.at("available") <= totalMem ? mem.stats.at("available") : mem.stats.at("free"));
+			if (mem.stats.at("used"))
 			if (mem.stats.at("swap_total") > 0) mem.stats.at("swap_used") = mem.stats.at("swap_total") - mem.stats.at("swap_free");
 		}
 		else