[PATCH] slab debug and ARCH_SLAB_MINALIGN don't get along

[pandora-kernel.git] / mm / slab.c

diff --git a/mm/slab.c b/mm/slab.c
index 3c4a7e3..ff60a94 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -313,7 +313,7 @@ static int drain_freelist(struct kmem_cache *cache,
 static void free_block(struct kmem_cache *cachep, void **objpp, int len,
                        int node);
 static int enable_cpucache(struct kmem_cache *cachep);
-static void cache_reap(void *unused);
+static void cache_reap(struct work_struct *unused);
 
 /*
  * This function must be completely optimized away if a constant is passed to
@@ -753,7 +753,7 @@ int slab_is_available(void)
        return g_cpucache_up == FULL;
 }
 
-static DEFINE_PER_CPU(struct work_struct, reap_work);
+static DEFINE_PER_CPU(struct delayed_work, reap_work);
 
 static inline struct array_cache *cpu_cache_get(struct kmem_cache *cachep)
 {
@@ -916,16 +916,16 @@ static void next_reap_node(void)
  */
 static void __devinit start_cpu_timer(int cpu)
 {
-       struct work_struct *reap_work = &per_cpu(reap_work, cpu);
+       struct delayed_work *reap_work = &per_cpu(reap_work, cpu);
 
        /*
         * When this gets called from do_initcalls via cpucache_init(),
         * init_workqueues() has already run, so keventd will be setup
         * at that time.
         */
-       if (keventd_up() && reap_work->func == NULL) {
+       if (keventd_up() && reap_work->work.func == NULL) {
                init_reap_node(cpu);
-               INIT_WORK(reap_work, cache_reap, NULL);
+               INIT_DELAYED_WORK(reap_work, cache_reap);
                schedule_delayed_work_on(cpu, reap_work, HZ + 3 * cpu);
        }
 }
@@ -2197,18 +2197,17 @@ kmem_cache_create (const char *name, size_t size, size_t align,
        if (flags & SLAB_RED_ZONE || flags & SLAB_STORE_USER)
                ralign = BYTES_PER_WORD;
 
-       /* 2) arch mandated alignment: disables debug if necessary */
+       /* 2) arch mandated alignment */
        if (ralign < ARCH_SLAB_MINALIGN) {
                ralign = ARCH_SLAB_MINALIGN;
-               if (ralign > BYTES_PER_WORD)
-                       flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
        }
-       /* 3) caller mandated alignment: disables debug if necessary */
+       /* 3) caller mandated alignment */
        if (ralign < align) {
                ralign = align;
-               if (ralign > BYTES_PER_WORD)
-                       flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
        }
+       /* disable debug if necessary */
+       if (ralign > BYTES_PER_WORD)
+               flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
        /*
         * 4) Store it.
         */
@@ -3063,6 +3062,12 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
 
                cachep->ctor(objp, cachep, ctor_flags);
        }
+#if ARCH_SLAB_MINALIGN
+       if ((u32)objp & (ARCH_SLAB_MINALIGN-1)) {
+               printk(KERN_ERR "0x%p: not aligned to ARCH_SLAB_MINALIGN=%d\n",
+                      objp, ARCH_SLAB_MINALIGN);
+       }
+#endif
        return objp;
 }
 #else
@@ -3815,7 +3820,7 @@ void drain_array(struct kmem_cache *cachep, struct kmem_list3 *l3,
  * If we cannot acquire the cache chain mutex then just give up - we'll try
  * again on the next iteration.
  */
-static void cache_reap(void *unused)
+static void cache_reap(struct work_struct *unused)
 {
        struct kmem_cache *searchp;
        struct kmem_list3 *l3;