---

yaml
---
r: 295275
b: refs/heads/master
c: accb61f
h: refs/heads/master
i:
  295273: 2a46ca4
  295271: 38f547a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 909af768e88867016f427264ae39d27a57b6a8ed
+refs/heads/master: accb61fe7bb0f5c2a4102239e4981650f9048519

trunk/arch/alpha/include/asm/mman.h

@@ -56,6 +56,10 @@
 #define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE	15		/* Not worth backing with hugepages */
 
+#define MADV_DONTDUMP   16		/* Explicity exclude from the core dump,
+					   overrides the coredump filter bits */
+#define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */
+
 /* compatibility flags */
 #define MAP_FILE	0
 

trunk/arch/mips/include/asm/mman.h

@@ -80,6 +80,10 @@
 #define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE	15		/* Not worth backing with hugepages */
 
+#define MADV_DONTDUMP   16		/* Explicity exclude from the core dump,
+					   overrides the coredump filter bits */
+#define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */
+
 /* compatibility flags */
 #define MAP_FILE	0
 

trunk/arch/parisc/include/asm/mman.h

@@ -62,6 +62,10 @@
 #define MADV_HUGEPAGE	67		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE	68		/* Not worth backing with hugepages */
 
+#define MADV_DONTDUMP   69		/* Explicity exclude from the core dump,
+					   overrides the coredump filter bits */
+#define MADV_DODUMP	70		/* Clear the MADV_NODUMP flag */
+
 /* compatibility flags */
 #define MAP_FILE	0
 #define MAP_VARIABLE	0

trunk/arch/xtensa/include/asm/mman.h

@@ -86,6 +86,10 @@
 #define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE	15		/* Not worth backing with hugepages */
 
+#define MADV_DONTDUMP   16		/* Explicity exclude from the core dump,
+					   overrides the coredump filter bits */
+#define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */
+
 /* compatibility flags */
 #define MAP_FILE	0
 

trunk/fs/binfmt_elf.c

@@ -1127,6 +1127,9 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 	if (always_dump_vma(vma))
 		goto whole;
 
+	if (vma->vm_flags & VM_NODUMP)
+		return 0;
+
 	/* Hugetlb memory check */
 	if (vma->vm_flags & VM_HUGETLB) {
 		if ((vma->vm_flags & VM_SHARED) && FILTER(HUGETLB_SHARED))

trunk/include/asm-generic/mman-common.h

@@ -48,6 +48,10 @@
 #define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE	15		/* Not worth backing with hugepages */
 
+#define MADV_DONTDUMP   16		/* Explicity exclude from the core dump,
+					   overrides the coredump filter bits */
+#define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */
+
 /* compatibility flags */
 #define MAP_FILE	0
 

trunk/include/linux/mm.h

@@ -111,6 +111,7 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_HUGEPAGE	0x01000000	/* MADV_HUGEPAGE marked this vma */
 #endif
 #define VM_INSERTPAGE	0x02000000	/* The vma has had "vm_insert_page()" done on it */
+#define VM_NODUMP	0x04000000	/* Do not include in the core dump */
 
 #define VM_CAN_NONLINEAR 0x08000000	/* Has ->fault & does nonlinear pages */
 #define VM_MIXEDMAP	0x10000000	/* Can contain "struct page" and pure PFN pages */

trunk/mm/madvise.c

@@ -65,6 +65,12 @@ static long madvise_behavior(struct vm_area_struct * vma,
 		}
 		new_flags &= ~VM_DONTCOPY;
 		break;
+	case MADV_DONTDUMP:
+		new_flags |= VM_NODUMP;
+		break;
+	case MADV_DODUMP:
+		new_flags &= ~VM_NODUMP;
+		break;
 	case MADV_MERGEABLE:
 	case MADV_UNMERGEABLE:
 		error = ksm_madvise(vma, start, end, behavior, &new_flags);
@@ -293,6 +299,8 @@ madvise_behavior_valid(int behavior)
 	case MADV_HUGEPAGE:
 	case MADV_NOHUGEPAGE:
 #endif
+	case MADV_DONTDUMP:
+	case MADV_DODUMP:
 		return 1;
 
 	default: