From c1055d173e7263ce7618ff4b297daa41b12a765d Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Tue, 12 Apr 2011 14:40:51 +1000
Subject: [PATCH] Clamp largest 32bit usable chunk to 2/3 of 1GB.

---
 main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/main.c b/main.c
index 8b4fd8e..b76716b 100644
--- a/main.c
+++ b/main.c
@@ -776,10 +776,13 @@ int main(int argc, char *argv[])
 			/* Decrease usable ram size on 32 bits due to kernel /
 			 * userspace split. Cannot allocate larger than a 1
 			 * gigabyte chunk due to 32 bit signed long being
-			 * used in alloc */
+			 * used in alloc, and at most 3GB can be malloced, and
+			 * 2/3 of that makes for a total of 2GB to be split
+			 * into thirds.
+			 */
 			control.usable_ram = MAX(control.ramsize - 900000000ll, 900000000ll);
 			control.maxram = MIN(control.maxram, control.usable_ram);
-			control.maxram = MIN(control.maxram, one_g);
+			control.maxram = MIN(control.maxram, one_g * 2 / 3);
 		} else
 			control.usable_ram = control.maxram;
 		round_to_page(&control.maxram);