/* First double word block */
unsigned long flags; /* Atomic flags, some possibly
* updated asynchronously */
- struct address_space *mapping; /* If low bit clear, points to
- * inode address_space, or NULL.
- * If page mapped as anonymous
- * memory, low bit is set, and
- * it points to anon_vma object:
- * see PAGE_MAPPING_ANON below.
- */
+ union {
+ struct address_space *mapping; /* If low bit clear, points to
+ * inode address_space, or NULL.
+ * If page mapped as anonymous
+ * memory, low bit is set, and
+ * it points to anon_vma object:
+ * see PAGE_MAPPING_ANON below.
+ */
+ void *s_mem; /* slab first object */
+ };
+
/* Second double word */
struct {
union {
pgoff_t index; /* Our offset within mapping. */
- void *freelist; /* slub/slob first free object */
+ void *freelist; /* sl[aou]b first free object */
bool pfmemalloc; /* If set by the page allocator,
* ALLOC_NO_WATERMARKS was set
* and the low watermark was not
* this page is only used to
* free other pages.
*/
-#if defined(CONFIG_TRANSPARENT_HUGEPAGE) && USE_SPLIT_PMD_PTLOCKS
- pgtable_t pmd_huge_pte; /* protected by page->ptl */
-#endif
};
union {
};
atomic_t _count; /* Usage count, see below. */
};
+ unsigned int active; /* SLAB */
};
};
struct list_head list; /* slobs list of pages */
struct slab *slab_page; /* slab fields */
+ struct rcu_head rcu_head; /* Used by SLAB
+ * when destroying via RCU
+ */
+#if defined(CONFIG_TRANSPARENT_HUGEPAGE) && USE_SPLIT_PMD_PTLOCKS
+ pgtable_t pmd_huge_pte; /* protected by page->ptl */
+#endif
};
/* Remainder is not double word aligned */