[PATCH] slab: cache alloc cleanups

[cascardo/linux.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index af227d2..ef09f0a 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2606,8 +2606,15 @@ static int __init gate_vma_init(void)
        gate_vma.vm_mm = NULL;
        gate_vma.vm_start = FIXADDR_USER_START;
        gate_vma.vm_end = FIXADDR_USER_END;
-       gate_vma.vm_page_prot = PAGE_READONLY;
-       gate_vma.vm_flags = 0;
+       gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
+       gate_vma.vm_page_prot = __P101;
+       /*
+        * Make sure the vDSO gets into every core dump.
+        * Dumping its contents makes post-mortem fully interpretable later
+        * without matching up the same kernel and hardware config to see
+        * what PC values meant.
+        */
+       gate_vma.vm_flags |= VM_ALWAYSDUMP;
        return 0;
 }
 __initcall(gate_vma_init);