mmap: allow unlimited overcommit

Change-Id: Iba07b5c504b4a202cd163ce682f3fc72a31284a0
2020-07-10 14:52:57 +09:00
parent d78a0fd05d
commit bafe540d86
4 changed files with 15 additions and 0 deletions
--- a/kernel/include/rusage_private.h
+++ b/kernel/include/rusage_private.h
@@ -11,6 +11,7 @@
 #include <ihk/ihk_monitor.h>
 #include <ihk/debug.h>
 #include <memory.h>
+#include <mman.h>

 #ifdef ENABLE_RUSAGE

@@ -311,6 +312,9 @@ rusage_check_overmap(size_t len, int pgshift)
 {
 	int npages = 0, remain_pages = 0;

+	if (sysctl_overcommit_memory == OVERCOMMIT_ALWAYS)
+		return 0;
+
 	npages = (len + (1UL << pgshift) - 1) >> pgshift;
 	remain_pages = (rusage.total_memory - rusage.total_memory_usage)
 			>> pgshift;