From 295a4d8e6433e8a8b6df25375fb780b0f75ff4e6 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Sat, 22 Dec 2012 15:06:28 -0500
Subject: runtime: ignore failure from madvise

When we release memory to the OS, if the OS doesn't want us
to release it (for example, because the program executed
mlockall(MCL_FUTURE)), madvise will fail. Ignore the failure
instead of crashing.

Fixes #3435.

R=ken2
CC=golang-dev
https://golang.org/cl/6998052
---
 src/pkg/runtime/sys_linux_arm.s | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'src/pkg/runtime/sys_linux_arm.s')

diff --git a/src/pkg/runtime/sys_linux_arm.s b/src/pkg/runtime/sys_linux_arm.s
index eda7b1f568..53eb7b19d8 100644
--- a/src/pkg/runtime/sys_linux_arm.s
+++ b/src/pkg/runtime/sys_linux_arm.s
@@ -133,10 +133,7 @@ TEXT runtime·madvise(SB),7,$0
 	MOVW	8(FP), R2
 	MOVW	$SYS_madvise, R7
 	SWI	$0
-	MOVW	$0xfffff001, R6
-	CMP 	R6, R0
-	MOVW.HI	$0, R9  // crash on syscall failure
-	MOVW.HI	R9, (R9)
+	// ignore failure - maybe pages are locked
 	RET
 
 TEXT runtime·setitimer(SB),7,$0
-- 
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