slub: use __cmpxchg_double_slab() at interrupt disabled place (d24ac77f) · Commits · 戴 / test

mm/slub.c

+9 −3

Original line number	Diff line number	Diff line
		@@ -1872,7 +1872,11 @@ redo:
		}
		}

		/* Unfreeze all the cpu partial slabs */
		/*
		* Unfreeze all the cpu partial slabs.
		*
		* This function must be called with interrupt disabled.
		*/
		static void unfreeze_partials(struct kmem_cache *s)
		{
		struct kmem_cache_node *n = NULL;
		@@ -1928,7 +1932,7 @@ static void unfreeze_partials(struct kmem_cache *s)
		l = m;
		}

		} while (!cmpxchg_double_slab(s, page,
		} while (!__cmpxchg_double_slab(s, page,
		old.freelist, old.counters,
		new.freelist, new.counters,
		"unfreezing slab"));
		@@ -2165,6 +2169,8 @@ static inline void new_slab_objects(struct kmem_cache s, gfp_t flags,
		* The page is still frozen if the return value is not NULL.
		*
		* If this function returns NULL then the page has been unfrozen.
		*
		* This function must be called with interrupt disabled.
		*/
		static inline void get_freelist(struct kmem_cache s, struct page *page)
		{
		@@ -2182,7 +2188,7 @@ static inline void get_freelist(struct kmem_cache s, struct page *page)
		new.inuse = page->objects;
		new.frozen = freelist != NULL;

		} while (!cmpxchg_double_slab(s, page,
		} while (!__cmpxchg_double_slab(s, page,
		freelist, counters,
		NULL, new.counters,
		"get_freelist"));