* 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!
*/
/*
#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 */
PAGEFLAG_FALSE(Uncached)
#endif
+#ifdef CONFIG_MEMORY_FAILURE
+PAGEFLAG(HWPoison, hwpoison)
+TESTSETFLAG(HWPoison, hwpoison)
+#define __PG_HWPOISON (1UL << PG_hwpoison)
+#else
+PAGEFLAG_FALSE(HWPoison)
+#define __PG_HWPOISON 0
+#endif
+
static inline int PageUptodate(struct page *page)
{
int ret = test_bit(PG_uptodate, &(page)->flags);
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 */