mm: track vma changes with VM_SOFTDIRTY bit

[linux-2.6-block.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index d2d59b4149d06536d552d402cc872186f6f5ac74..dce24569f8fcb28cc10792db5c9f3b58b4f8e7f6 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -115,6 +115,12 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_ARCH_1      0x01000000      /* Architecture-specific flag */
 #define VM_DONTDUMP    0x04000000      /* Do not include in the core dump */
 
+#ifdef CONFIG_MEM_SOFT_DIRTY
+# define VM_SOFTDIRTY  0x08000000      /* Not soft dirty clean area */
+#else
+# define VM_SOFTDIRTY  0
+#endif
+
 #define VM_MIXEDMAP    0x10000000      /* Can contain "struct page" and pure PFN pages */
 #define VM_HUGEPAGE    0x20000000      /* MADV_HUGEPAGE marked this vma */
 #define VM_NOHUGEPAGE  0x40000000      /* MADV_NOHUGEPAGE marked this vma */