hugetlb, rmap: add reverse mapping for hugepage

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / poison.h

diff --git a/include/linux/poison.h b/include/linux/poison.h
index 34066ff..2110a81 100644 (file)
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -48,15 +48,6 @@
 #define POISON_FREE    0x6b    /* for use-after-free poisoning */
 #define        POISON_END      0xa5    /* end-byte of poisoning */
 
-/********** mm/hugetlb.c **********/
-/*
- * Private mappings of hugetlb pages use this poisoned value for
- * page->mapping. The core VM should not be doing anything with this mapping
- * but futex requires the existence of some page->mapping value even though it
- * is unused if PAGE_MAPPING_ANON is set.
- */
-#define HUGETLB_POISON ((void *)(0x00300300 + POISON_POINTER_DELTA + PAGE_MAPPING_ANON))
-
 /********** arch/$ARCH/mm/init.c **********/
 #define POISON_FREE_INITMEM    0xcc