#include <linux/types.h>
#ifndef __GENERATING_BOUNDS_H
#include <linux/mm_types.h>
-#include <linux/bounds.h>
+#include <generated/bounds.h>
#endif /* !__GENERATING_BOUNDS_H */
/*
* PG_buddy is set to indicate that the page is free and in the buddy system
* (see mm/page_alloc.c).
*
+ * PG_hwpoison indicates that a page got corrupted in hardware and contains
+ * data with incorrect ECC bits that triggered a machine check. Accessing is
+ * not safe since it may cause another machine check. Don't touch!
*/
/*
PG_buddy, /* Page is free, on buddy lists */
PG_swapbacked, /* Page is backed by RAM/swap */
PG_unevictable, /* Page is "unevictable" */
-#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT
+#ifdef CONFIG_MMU
PG_mlocked, /* Page is vma mlocked */
#endif
-#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR
+#ifdef CONFIG_ARCH_USES_PG_UNCACHED
PG_uncached, /* Page has been mapped as uncached */
#endif
+#ifdef CONFIG_MEMORY_FAILURE
+ PG_hwpoison, /* hardware poisoned page. Don't touch */
+#endif
__NR_PAGEFLAGS,
/* Filesystems */
static inline int TestClearPage##uname(struct page *page) \
{ return test_and_clear_bit(PG_##lname, &page->flags); }
+#define __TESTCLEARFLAG(uname, lname) \
+static inline int __TestClearPage##uname(struct page *page) \
+ { return __test_and_clear_bit(PG_##lname, &page->flags); }
#define PAGEFLAG(uname, lname) TESTPAGEFLAG(uname, lname) \
SETPAGEFLAG(uname, lname) CLEARPAGEFLAG(uname, lname)
#define TESTCLEARFLAG_FALSE(uname) \
static inline int TestClearPage##uname(struct page *page) { return 0; }
+#define __TESTCLEARFLAG_FALSE(uname) \
+static inline int __TestClearPage##uname(struct page *page) { return 0; }
+
struct page; /* forward declaration */
TESTPAGEFLAG(Locked, locked) TESTSETFLAG(Locked, locked)
PAGEFLAG(Unevictable, unevictable) __CLEARPAGEFLAG(Unevictable, unevictable)
TESTCLEARFLAG(Unevictable, unevictable)
-#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT
-#define MLOCK_PAGES 1
+#ifdef CONFIG_MMU
PAGEFLAG(Mlocked, mlocked) __CLEARPAGEFLAG(Mlocked, mlocked)
- TESTSCFLAG(Mlocked, mlocked)
+ TESTSCFLAG(Mlocked, mlocked) __TESTCLEARFLAG(Mlocked, mlocked)
#else
-#define MLOCK_PAGES 0
-PAGEFLAG_FALSE(Mlocked)
- SETPAGEFLAG_NOOP(Mlocked) TESTCLEARFLAG_FALSE(Mlocked)
+PAGEFLAG_FALSE(Mlocked) SETPAGEFLAG_NOOP(Mlocked)
+ TESTCLEARFLAG_FALSE(Mlocked) __TESTCLEARFLAG_FALSE(Mlocked)
#endif
-#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR
+#ifdef CONFIG_ARCH_USES_PG_UNCACHED
PAGEFLAG(Uncached, uncached)
#else
PAGEFLAG_FALSE(Uncached)
#endif
+#ifdef CONFIG_MEMORY_FAILURE
+PAGEFLAG(HWPoison, hwpoison)
+TESTSCFLAG(HWPoison, hwpoison)
+#define __PG_HWPOISON (1UL << PG_hwpoison)
+#else
+PAGEFLAG_FALSE(HWPoison)
+#define __PG_HWPOISON 0
+#endif
+
+u64 stable_page_flags(struct page *page);
+
static inline int PageUptodate(struct page *page)
{
int ret = test_bit(PG_uptodate, &(page)->flags);
#endif /* !PAGEFLAGS_EXTENDED */
-#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT
+#ifdef CONFIG_MMU
#define __PG_MLOCKED (1 << PG_mlocked)
#else
#define __PG_MLOCKED 0
1 << PG_private | 1 << PG_private_2 | \
1 << PG_buddy | 1 << PG_writeback | 1 << PG_reserved | \
1 << PG_slab | 1 << PG_swapcache | 1 << PG_active | \
- 1 << PG_unevictable | __PG_MLOCKED)
+ 1 << PG_unevictable | __PG_MLOCKED | __PG_HWPOISON)
/*
* Flags checked when a page is prepped for return by the page allocator.
*/
#define PAGE_FLAGS_CHECK_AT_PREP ((1 << NR_PAGEFLAGS) - 1)
-#endif /* !__GENERATING_BOUNDS_H */
-
+#define PAGE_FLAGS_PRIVATE \
+ (1 << PG_private | 1 << PG_private_2)
/**
* page_has_private - Determine if page has private stuff
* @page: The page to be checked
* Determine if a page has private stuff, indicating that release routines
* should be invoked upon it.
*/
-#define page_has_private(page) \
- ((page)->flags & ((1 << PG_private) | \
- (1 << PG_private_2)))
+static inline int page_has_private(struct page *page)
+{
+ return !!(page->flags & PAGE_FLAGS_PRIVATE);
+}
+
+#endif /* !__GENERATING_BOUNDS_H */
#endif /* PAGE_FLAGS_H */