1 files changed, 139 insertions, 141 deletions

diff --git a/mm/slab.c b/mm/slab.c
index 9a90b00d2f91..d08692303f6e 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -102,17 +102,19 @@
 #include        <linux/cpu.h>
 #include        <linux/sysctl.h>
 #include        <linux/module.h>
-#include        <trace/kmemtrace.h>
+#include        <linux/kmemtrace.h>
 #include        <linux/rcupdate.h>
 #include        <linux/string.h>
 #include        <linux/uaccess.h>
 #include        <linux/nodemask.h>
+#include        <linux/kmemleak.h>
 #include        <linux/mempolicy.h>
 #include        <linux/mutex.h>
 #include        <linux/fault-inject.h>
 #include        <linux/rtmutex.h>
 #include        <linux/reciprocal_div.h>
 #include        <linux/debugobjects.h>
+#include        <linux/kmemcheck.h>
 
 #include        <asm/cacheflush.h>
 #include        <asm/tlbflush.h>
@@ -178,13 +180,13 @@
                          SLAB_STORE_USER | \
                          SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \
                          SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \
-                         SLAB_DEBUG_OBJECTS)
+                         SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK)
 #else
 # define CREATE_MASK    (SLAB_HWCACHE_ALIGN | \
                          SLAB_CACHE_DMA | \
                          SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \
                          SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \
-                         SLAB_DEBUG_OBJECTS)
+                         SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK)
 #endif
 
 /*
@@ -303,6 +305,12 @@ struct kmem_list3 {
 };
 
 /*
+ * The slab allocator is initialized with interrupts disabled. Therefore, make
+ * sure early boot allocations don't accidentally enable interrupts.
+ */
+static gfp_t slab_gfp_mask __read_mostly = SLAB_GFP_BOOT_MASK;
+
+/*
  * Need this for bootstrapping a per node allocator.
  */
 #define NUM_INIT_LISTS (3 * MAX_NUMNODES)
@@ -315,7 +323,7 @@ static int drain_freelist(struct kmem_cache *cache,
                         struct kmem_list3 *l3, int tofree);
 static void free_block(struct kmem_cache *cachep, void **objpp, int len,
                         int node);
-static int enable_cpucache(struct kmem_cache *cachep);
+static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp);
 static void cache_reap(struct work_struct *unused);
 
 /*
@@ -373,87 +381,6 @@ static void kmem_list3_init(struct kmem_list3 *parent)
         MAKE_LIST((cachep), (&(ptr)->slabs_free), slabs_free, nodeid);  \
         } while (0)
 
-/*
- * struct kmem_cache
- *
- * manages a cache.
- */
-
-struct kmem_cache {
-/* 1) per-cpu data, touched during every alloc/free */
-        struct array_cache *array[NR_CPUS];
-/* 2) Cache tunables. Protected by cache_chain_mutex */
-        unsigned int batchcount;
-        unsigned int limit;
-        unsigned int shared;
-
-        unsigned int buffer_size;
-        u32 reciprocal_buffer_size;
-/* 3) touched by every alloc & free from the backend */
-
-        unsigned int flags;             /* constant flags */
-        unsigned int num;               /* # of objs per slab */
-
-/* 4) cache_grow/shrink */
-        /* order of pgs per slab (2^n) */
-        unsigned int gfporder;
-
-        /* force GFP flags, e.g. GFP_DMA */
-        gfp_t gfpflags;
-
-        size_t colour;                  /* cache colouring range */
-        unsigned int colour_off;        /* colour offset */
-        struct kmem_cache *slabp_cache;
-        unsigned int slab_size;
-        unsigned int dflags;            /* dynamic flags */
-
-        /* constructor func */
-        void (*ctor)(void *obj);
-
-/* 5) cache creation/removal */
-        const char *name;
-        struct list_head next;
-
-/* 6) statistics */
-#if STATS
-        unsigned long num_active;
-        unsigned long num_allocations;
-        unsigned long high_mark;
-        unsigned long grown;
-        unsigned long reaped;
-        unsigned long errors;
-        unsigned long max_freeable;
-        unsigned long node_allocs;
-        unsigned long node_frees;
-        unsigned long node_overflow;
-        atomic_t allochit;
-        atomic_t allocmiss;
-        atomic_t freehit;
-        atomic_t freemiss;
-#endif
-#if DEBUG
-        /*
-         * If debugging is enabled, then the allocator can add additional
-         * fields and/or padding to every object. buffer_size contains the total
-         * object size including these internal fields, the following two
-         * variables contain the offset to the user object and its size.
-         */
-        int obj_offset;
-        int obj_size;
-#endif
-        /*
-         * We put nodelists[] at the end of kmem_cache, because we want to size
-         * this array to nr_node_ids slots instead of MAX_NUMNODES
-         * (see kmem_cache_init())
-         * We still use [MAX_NUMNODES] and not [1] or [0] because cache_cache
-         * is statically defined, so we reserve the max number of nodes.
-         */
-        struct kmem_list3 *nodelists[MAX_NUMNODES];
-        /*
-         * Do not add fields after nodelists[]
-         */
-};
-
 #define CFLGS_OFF_SLAB          (0x80000000UL)
 #define OFF_SLAB(x)     ((x)->flags & CFLGS_OFF_SLAB)
 
@@ -752,6 +679,7 @@ static enum {
         NONE,
         PARTIAL_AC,
         PARTIAL_L3,
+        EARLY,
         FULL
 } g_cpucache_up;
 
@@ -760,7 +688,7 @@ static enum {
  */
 int slab_is_available(void)
 {
-        return g_cpucache_up == FULL;
+        return g_cpucache_up >= EARLY;
 }
 
 static DEFINE_PER_CPU(struct delayed_work, reap_work);
@@ -890,7 +818,6 @@ static void __slab_error(const char *function, struct kmem_cache *cachep,
   */
 
 static int use_alien_caches __read_mostly = 1;
-static int numa_platform __read_mostly = 1;
 static int __init noaliencache_setup(char *s)
 {
         use_alien_caches = 0;
@@ -958,12 +885,20 @@ static void __cpuinit start_cpu_timer(int cpu)
 }
 
 static struct array_cache *alloc_arraycache(int node, int entries,
-                                            int batchcount)
+                                            int batchcount, gfp_t gfp)
 {
         int memsize = sizeof(void *) * entries + sizeof(struct array_cache);
         struct array_cache *nc = NULL;
 
-        nc = kmalloc_node(memsize, GFP_KERNEL, node);
+        nc = kmalloc_node(memsize, gfp, node);
+        /*
+         * The array_cache structures contain pointers to free object.
+         * However, when such objects are allocated or transfered to another
+         * cache the pointers are not cleared and they could be counted as
+         * valid references during a kmemleak scan. Therefore, kmemleak must
+         * not scan such objects.
+         */
+        kmemleak_no_scan(nc);
         if (nc) {
                 nc->avail = 0;
                 nc->limit = entries;
@@ -1003,7 +938,7 @@ static int transfer_objects(struct array_cache *to,
 #define drain_alien_cache(cachep, alien) do { } while (0)
 #define reap_alien(cachep, l3) do { } while (0)
 
-static inline struct array_cache **alloc_alien_cache(int node, int limit)
+static inline struct array_cache **alloc_alien_cache(int node, int limit, gfp_t gfp)
 {
         return (struct array_cache **)BAD_ALIEN_MAGIC;
 }
@@ -1034,7 +969,7 @@ static inline void *____cache_alloc_node(struct kmem_cache *cachep,
 static void *____cache_alloc_node(struct kmem_cache *, gfp_t, int);
 static void *alternate_node_alloc(struct kmem_cache *, gfp_t);
 
-static struct array_cache **alloc_alien_cache(int node, int limit)
+static struct array_cache **alloc_alien_cache(int node, int limit, gfp_t gfp)
 {
         struct array_cache **ac_ptr;
         int memsize = sizeof(void *) * nr_node_ids;
@@ -1042,14 +977,14 @@ static struct array_cache **alloc_alien_cache(int node, int limit)
 
         if (limit > 1)
                 limit = 12;
-        ac_ptr = kmalloc_node(memsize, GFP_KERNEL, node);
+        ac_ptr = kmalloc_node(memsize, gfp, node);
         if (ac_ptr) {
                 for_each_node(i) {
                         if (i == node || !node_online(i)) {
                                 ac_ptr[i] = NULL;
                                 continue;
                         }
-                        ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d);
+                        ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d, gfp);
                         if (!ac_ptr[i]) {
                                 for (i--; i >= 0; i--)
                                         kfree(ac_ptr[i]);
@@ -1282,20 +1217,20 @@ static int __cpuinit cpuup_prepare(long cpu)
                 struct array_cache **alien = NULL;
 
                 nc = alloc_arraycache(node, cachep->limit,
-                                        cachep->batchcount);
+                                        cachep->batchcount, GFP_KERNEL);
                 if (!nc)
                         goto bad;
                 if (cachep->shared) {
                         shared = alloc_arraycache(node,
                                 cachep->shared * cachep->batchcount,
-                                0xbaadf00d);
+                                0xbaadf00d, GFP_KERNEL);
                         if (!shared) {
                                 kfree(nc);
                                 goto bad;
                         }
                 }
                 if (use_alien_caches) {
-                        alien = alloc_alien_cache(node, cachep->limit);
+                        alien = alloc_alien_cache(node, cachep->limit, GFP_KERNEL);
                         if (!alien) {
                                 kfree(shared);
                                 kfree(nc);
@@ -1399,10 +1334,9 @@ static void init_list(struct kmem_cache *cachep, struct kmem_list3 *list,
 {
         struct kmem_list3 *ptr;
 
-        ptr = kmalloc_node(sizeof(struct kmem_list3), GFP_KERNEL, nodeid);
+        ptr = kmalloc_node(sizeof(struct kmem_list3), GFP_NOWAIT, nodeid);
         BUG_ON(!ptr);
 
-        local_irq_disable();
         memcpy(ptr, list, sizeof(struct kmem_list3));
         /*
          * Do not assume that spinlocks can be initialized via memcpy:
@@ -1411,7 +1345,6 @@ static void init_list(struct kmem_cache *cachep, struct kmem_list3 *list,
 
         MAKE_ALL_LISTS(cachep, ptr, nodeid);
         cachep->nodelists[nodeid] = ptr;
-        local_irq_enable();
 }
 
 /*
@@ -1443,10 +1376,8 @@ void __init kmem_cache_init(void)
         int order;
         int node;
 
-        if (num_possible_nodes() == 1) {
+        if (num_possible_nodes() == 1)
                 use_alien_caches = 0;
-                numa_platform = 0;
-        }
 
         for (i = 0; i < NUM_INIT_LISTS; i++) {
                 kmem_list3_init(&initkmem_list3[i]);
@@ -1575,9 +1506,8 @@ void __init kmem_cache_init(void)
         {
                 struct array_cache *ptr;
 
-                ptr = kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
+                ptr = kmalloc(sizeof(struct arraycache_init), GFP_NOWAIT);
 
-                local_irq_disable();
                 BUG_ON(cpu_cache_get(&cache_cache) != &initarray_cache.cache);
                 memcpy(ptr, cpu_cache_get(&cache_cache),
                        sizeof(struct arraycache_init));
@@ -1587,11 +1517,9 @@ void __init kmem_cache_init(void)
                 spin_lock_init(&ptr->lock);
 
                 cache_cache.array[smp_processor_id()] = ptr;
-                local_irq_enable();
 
-                ptr = kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
+                ptr = kmalloc(sizeof(struct arraycache_init), GFP_NOWAIT);
 
-                local_irq_disable();
                 BUG_ON(cpu_cache_get(malloc_sizes[INDEX_AC].cs_cachep)
                        != &initarray_generic.cache);
                 memcpy(ptr, cpu_cache_get(malloc_sizes[INDEX_AC].cs_cachep),
@@ -1603,7 +1531,6 @@ void __init kmem_cache_init(void)
 
                 malloc_sizes[INDEX_AC].cs_cachep->array[smp_processor_id()] =
                     ptr;
-                local_irq_enable();
         }
         /* 5) Replace the bootstrap kmem_list3's */
         {
@@ -1622,19 +1549,27 @@ void __init kmem_cache_init(void)
                 }
         }
 
-        /* 6) resize the head arrays to their final sizes */
-        {
-                struct kmem_cache *cachep;
-                mutex_lock(&cache_chain_mutex);
-                list_for_each_entry(cachep, &cache_chain, next)
-                        if (enable_cpucache(cachep))
-                                BUG();
-                mutex_unlock(&cache_chain_mutex);
-        }
+        g_cpucache_up = EARLY;
 
         /* Annotate slab for lockdep -- annotate the malloc caches */
         init_lock_keys();
+}
+
+void __init kmem_cache_init_late(void)
+{
+        struct kmem_cache *cachep;
 
+        /*
+         * Interrupts are enabled now so all GFP allocations are safe.
+         */
+        slab_gfp_mask = __GFP_BITS_MASK;
+
+        /* 6) resize the head arrays to their final sizes */
+        mutex_lock(&cache_chain_mutex);
+        list_for_each_entry(cachep, &cache_chain, next)
+                if (enable_cpucache(cachep, GFP_NOWAIT))
+                        BUG();
+        mutex_unlock(&cache_chain_mutex);
 
         /* Done! */
         g_cpucache_up = FULL;
@@ -1689,7 +1624,7 @@ static void *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid)
         if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
                 flags |= __GFP_RECLAIMABLE;
 
-        page = alloc_pages_node(nodeid, flags, cachep->gfporder);
+        page = alloc_pages_exact_node(nodeid, flags | __GFP_NOTRACK, cachep->gfporder);
         if (!page)
                 return NULL;
 
@@ -1702,6 +1637,16 @@ static void *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid)
                         NR_SLAB_UNRECLAIMABLE, nr_pages);
         for (i = 0; i < nr_pages; i++)
                 __SetPageSlab(page + i);
+
+        if (kmemcheck_enabled && !(cachep->flags & SLAB_NOTRACK)) {
+                kmemcheck_alloc_shadow(page, cachep->gfporder, flags, nodeid);
+
+                if (cachep->ctor)
+                        kmemcheck_mark_uninitialized_pages(page, nr_pages);
+                else
+                        kmemcheck_mark_unallocated_pages(page, nr_pages);
+        }
+
         return page_address(page);
 }
 
@@ -1714,6 +1659,8 @@ static void kmem_freepages(struct kmem_cache *cachep, void *addr)
         struct page *page = virt_to_page(addr);
         const unsigned long nr_freed = i;
 
+        kmemcheck_free_shadow(page, cachep->gfporder);
+
         if (cachep->flags & SLAB_RECLAIM_ACCOUNT)
                 sub_zone_page_state(page_zone(page),
                                 NR_SLAB_RECLAIMABLE, nr_freed);
@@ -2064,10 +2011,10 @@ static size_t calculate_slab_order(struct kmem_cache *cachep,
         return left_over;
 }
 
-static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
+static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp)
 {
         if (g_cpucache_up == FULL)
-                return enable_cpucache(cachep);
+                return enable_cpucache(cachep, gfp);
 
         if (g_cpucache_up == NONE) {
                 /*
@@ -2089,7 +2036,7 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
                         g_cpucache_up = PARTIAL_AC;
         } else {
                 cachep->array[smp_processor_id()] =
-                        kmalloc(sizeof(struct arraycache_init), GFP_KERNEL);
+                        kmalloc(sizeof(struct arraycache_init), gfp);
 
                 if (g_cpucache_up == PARTIAL_AC) {
                         set_up_list3s(cachep, SIZE_L3);
@@ -2099,7 +2046,7 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
                         for_each_online_node(node) {
                                 cachep->nodelists[node] =
                                     kmalloc_node(sizeof(struct kmem_list3),
-                                                GFP_KERNEL, node);
+                                                gfp, node);
                                 BUG_ON(!cachep->nodelists[node]);
                                 kmem_list3_init(cachep->nodelists[node]);
                         }
@@ -2153,6 +2100,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
 {
         size_t left_over, slab_size, ralign;
         struct kmem_cache *cachep = NULL, *pc;
+        gfp_t gfp;
 
         /*
          * Sanity checks... these are all serious usage bugs.
@@ -2168,8 +2116,10 @@ kmem_cache_create (const char *name, size_t size, size_t align,
          * We use cache_chain_mutex to ensure a consistent view of
          * cpu_online_mask as well.  Please see cpuup_callback
          */
-        get_online_cpus();
-        mutex_lock(&cache_chain_mutex);
+        if (slab_is_available()) {
+                get_online_cpus();
+                mutex_lock(&cache_chain_mutex);
+        }
 
         list_for_each_entry(pc, &cache_chain, next) {
                 char tmp;
@@ -2278,8 +2228,13 @@ kmem_cache_create (const char *name, size_t size, size_t align,
          */
         align = ralign;
 
+        if (slab_is_available())
+                gfp = GFP_KERNEL;
+        else
+                gfp = GFP_NOWAIT;
+
         /* Get cache's description obj. */
-        cachep = kmem_cache_zalloc(&cache_cache, GFP_KERNEL);
+        cachep = kmem_cache_zalloc(&cache_cache, gfp);
         if (!cachep)
                 goto oops;
 
@@ -2353,6 +2308,15 @@ kmem_cache_create (const char *name, size_t size, size_t align,
                 /* really off slab. No need for manual alignment */
                 slab_size =
                     cachep->num * sizeof(kmem_bufctl_t) + sizeof(struct slab);
+
+#ifdef CONFIG_PAGE_POISONING
+                /* If we're going to use the generic kernel_map_pages()
+                 * poisoning, then it's going to smash the contents of
+                 * the redzone and userword anyhow, so switch them off.
+                 */
+                if (size % PAGE_SIZE == 0 && flags & SLAB_POISON)
+                        flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
+#endif
         }
 
         cachep->colour_off = cache_line_size();
@@ -2382,7 +2346,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
         cachep->ctor = ctor;
         cachep->name = name;
 
-        if (setup_cpu_cache(cachep)) {
+        if (setup_cpu_cache(cachep, gfp)) {
                 __kmem_cache_destroy(cachep);
                 cachep = NULL;
                 goto oops;
@@ -2394,8 +2358,10 @@ oops:
         if (!cachep && (flags & SLAB_PANIC))
                 panic("kmem_cache_create(): failed to create slab `%s'\n",
                       name);
-        mutex_unlock(&cache_chain_mutex);
-        put_online_cpus();
+        if (slab_is_available()) {
+                mutex_unlock(&cache_chain_mutex);
+                put_online_cpus();
+        }
         return cachep;
 }
 EXPORT_SYMBOL(kmem_cache_create);
@@ -2621,6 +2587,14 @@ static struct slab *alloc_slabmgmt(struct kmem_cache *cachep, void *objp,
                 /* Slab management obj is off-slab. */
                 slabp = kmem_cache_alloc_node(cachep->slabp_cache,
                                               local_flags, nodeid);
+                /*
+                 * If the first object in the slab is leaked (it's allocated
+                 * but no one has a reference to it), we want to make sure
+                 * kmemleak does not treat the ->s_mem pointer as a reference
+                 * to the object. Otherwise we will not report the leak.
+                 */
+                kmemleak_scan_area(slabp, offsetof(struct slab, list),
+                                   sizeof(struct list_head), local_flags);
                 if (!slabp)
                         return NULL;
         } else {
@@ -3141,6 +3115,12 @@ static inline void *____cache_alloc(struct kmem_cache *cachep, gfp_t flags)
                 STATS_INC_ALLOCMISS(cachep);
                 objp = cache_alloc_refill(cachep, flags);
         }
+        /*
+         * To avoid a false negative, if an object that is in one of the
+         * per-CPU caches is leaked, we need to make sure kmemleak doesn't
+         * treat the array pointers as a reference to the object.
+         */
+        kmemleak_erase(&ac->entry[ac->avail]);
         return objp;
 }
 
@@ -3219,7 +3199,7 @@ retry:
                 if (local_flags & __GFP_WAIT)
                         local_irq_enable();
                 kmem_flagcheck(cache, flags);
-                obj = kmem_getpages(cache, local_flags, -1);
+                obj = kmem_getpages(cache, local_flags, numa_node_id());
                 if (local_flags & __GFP_WAIT)
                         local_irq_disable();
                 if (obj) {
@@ -3327,6 +3307,8 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
         unsigned long save_flags;
         void *ptr;
 
+        flags &= slab_gfp_mask;
+
         lockdep_trace_alloc(flags);
 
         if (slab_should_failslab(cachep, flags))
@@ -3360,6 +3342,11 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
   out:
         local_irq_restore(save_flags);
         ptr = cache_alloc_debugcheck_after(cachep, flags, ptr, caller);
+        kmemleak_alloc_recursive(ptr, obj_size(cachep), 1, cachep->flags,
+                                 flags);
+
+        if (likely(ptr))
+                kmemcheck_slab_alloc(cachep, flags, ptr, obj_size(cachep));
 
         if (unlikely((flags & __GFP_ZERO) && ptr))
                 memset(ptr, 0, obj_size(cachep));
@@ -3405,6 +3392,8 @@ __cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller)
         unsigned long save_flags;
         void *objp;
 
+        flags &= slab_gfp_mask;
+
         lockdep_trace_alloc(flags);
 
         if (slab_should_failslab(cachep, flags))
@@ -3415,8 +3404,13 @@ __cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller)
         objp = __do_cache_alloc(cachep, flags);
         local_irq_restore(save_flags);
         objp = cache_alloc_debugcheck_after(cachep, flags, objp, caller);
+        kmemleak_alloc_recursive(objp, obj_size(cachep), 1, cachep->flags,
+                                 flags);
         prefetchw(objp);
 
+        if (likely(objp))
+                kmemcheck_slab_alloc(cachep, flags, objp, obj_size(cachep));
+
         if (unlikely((flags & __GFP_ZERO) && objp))
                 memset(objp, 0, obj_size(cachep));
 
@@ -3530,8 +3524,11 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp)
         struct array_cache *ac = cpu_cache_get(cachep);
 
         check_irq_off();
+        kmemleak_free_recursive(objp, cachep->flags);
         objp = cache_free_debugcheck(cachep, objp, __builtin_return_address(0));
 
+        kmemcheck_slab_free(cachep, objp, obj_size(cachep));
+
         /*
          * Skip calling cache_free_alien() when the platform is not numa.
          * This will avoid cache misses that happen while accessing slabp (which
@@ -3539,7 +3536,7 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp)
          * variable to skip the call, which is mostly likely to be present in
          * the cache.
          */
-        if (numa_platform && cache_free_alien(cachep, objp))
+        if (nr_online_nodes > 1 && cache_free_alien(cachep, objp))
                 return;
 
         if (likely(ac->avail < ac->limit)) {
@@ -3802,7 +3799,7 @@ EXPORT_SYMBOL_GPL(kmem_cache_name);
 /*
  * This initializes kmem_list3 or resizes various caches for all nodes.
  */
-static int alloc_kmemlist(struct kmem_cache *cachep)
+static int alloc_kmemlist(struct kmem_cache *cachep, gfp_t gfp)
 {
         int node;
         struct kmem_list3 *l3;
@@ -3812,7 +3809,7 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
         for_each_online_node(node) {
 
                 if (use_alien_caches) {
-                        new_alien = alloc_alien_cache(node, cachep->limit);
+                        new_alien = alloc_alien_cache(node, cachep->limit, gfp);
                         if (!new_alien)
                                 goto fail;
                 }
@@ -3821,7 +3818,7 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
                 if (cachep->shared) {
                         new_shared = alloc_arraycache(node,
                                 cachep->shared*cachep->batchcount,
-                                        0xbaadf00d);
+                                        0xbaadf00d, gfp);
                         if (!new_shared) {
                                 free_alien_cache(new_alien);
                                 goto fail;
@@ -3850,7 +3847,7 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
                         free_alien_cache(new_alien);
                         continue;
                 }
-                l3 = kmalloc_node(sizeof(struct kmem_list3), GFP_KERNEL, node);
+                l3 = kmalloc_node(sizeof(struct kmem_list3), gfp, node);
                 if (!l3) {
                         free_alien_cache(new_alien);
                         kfree(new_shared);
@@ -3906,18 +3903,18 @@ static void do_ccupdate_local(void *info)
 
 /* Always called with the cache_chain_mutex held */
 static int do_tune_cpucache(struct kmem_cache *cachep, int limit,
-                                int batchcount, int shared)
+                                int batchcount, int shared, gfp_t gfp)
 {
         struct ccupdate_struct *new;
         int i;
 
-        new = kzalloc(sizeof(*new), GFP_KERNEL);
+        new = kzalloc(sizeof(*new), gfp);
         if (!new)
                 return -ENOMEM;
 
         for_each_online_cpu(i) {
                 new->new[i] = alloc_arraycache(cpu_to_node(i), limit,
-                                                batchcount);
+                                                batchcount, gfp);
                 if (!new->new[i]) {
                         for (i--; i >= 0; i--)
                                 kfree(new->new[i]);
@@ -3944,11 +3941,11 @@ static int do_tune_cpucache(struct kmem_cache *cachep, int limit,
                 kfree(ccold);
         }
         kfree(new);
-        return alloc_kmemlist(cachep);
+        return alloc_kmemlist(cachep, gfp);
 }
 
 /* Called with cache_chain_mutex held always */
-static int enable_cpucache(struct kmem_cache *cachep)
+static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp)
 {
         int err;
         int limit, shared;
@@ -3994,7 +3991,7 @@ static int enable_cpucache(struct kmem_cache *cachep)
         if (limit > 32)
                 limit = 32;
 #endif
-        err = do_tune_cpucache(cachep, limit, (limit + 1) / 2, shared);
+        err = do_tune_cpucache(cachep, limit, (limit + 1) / 2, shared, gfp);
         if (err)
                 printk(KERN_ERR "enable_cpucache failed for %s, error %d.\n",
                        cachep->name, -err);
@@ -4300,7 +4297,8 @@ ssize_t slabinfo_write(struct file *file, const char __user * buffer,
                                 res = 0;
                         } else {
                                 res = do_tune_cpucache(cachep, limit,
-                                                       batchcount, shared);
+                                                       batchcount, shared,
+                                                       GFP_KERNEL);
                         }
                         break;
                 }