madvise: Support MADV_WIPEONFORK, MADV_KEEPONFORK and MADV_NORMAL

Change-Id: I1d4cf5affa580d7304dfdc34fa4f1707c0df617c refs: #1374
2020-03-06 15:00:37 +09:00
parent d82ac31bc6
commit 3300e65efc
7 changed files with 131 additions and 2 deletions
--- a/kernel/include/mman.h
+++ b/kernel/include/mman.h
@ -54,6 +54,8 @@
 #define	MADV_NOHUGEPAGE		15
 #define	MADV_DONTDUMP		16
 #define	MADV_DODUMP		17
+#define	MADV_WIPEONFORK		18 /* Zero memory on fork, child only */
+#define	MADV_KEEPONFORK		19 /* Undo MADV_WIPEONFORK */
 #define	MADV_HWPOISON		100
 #define	MADV_SOFT_OFFLINE	101