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Diffstat (limited to 'include/linux/mm_types.h')
-rw-r--r--include/linux/mm_types.h20
1 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 704a626d94a0..bf7867200b95 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -53,7 +53,16 @@ struct page {
struct {
union {
pgoff_t index; /* Our offset within mapping. */
- void *freelist; /* slub first free object */
+ void *freelist; /* slub/slob first free object */
+ bool pfmemalloc; /* If set by the page allocator,
+ * ALLOC_NO_WATERMARKS was set
+ * and the low watermark was not
+ * met implying that the system
+ * is under some pressure. The
+ * caller should try ensure
+ * this page is only used to
+ * free other pages.
+ */
};
union {
@@ -91,11 +100,12 @@ struct page {
*/
atomic_t _mapcount;
- struct {
+ struct { /* SLUB */
unsigned inuse:16;
unsigned objects:15;
unsigned frozen:1;
};
+ int units; /* SLOB */
};
atomic_t _count; /* Usage count, see below. */
};
@@ -117,6 +127,12 @@ struct page {
short int pobjects;
#endif
};
+
+ struct list_head list; /* slobs list of pages */
+ struct { /* slab fields */
+ struct kmem_cache *slab_cache;
+ struct slab *slab_page;
+ };
};
/* Remainder is not double word aligned */