Merge branch 'slab/next' into slab/for-linus
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 0dd2dfa..83d1a14 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -321,7 +321,8 @@
* request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
- (defined(CONFIG_SLAB) && defined(CONFIG_TRACING))
+ (defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) || \
+ (defined(CONFIG_SLOB) && defined(CONFIG_TRACING))
extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
#define kmalloc_track_caller(size, flags) \
__kmalloc_track_caller(size, flags, _RET_IP_)
@@ -340,7 +341,8 @@
* allocation request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
- (defined(CONFIG_SLAB) && defined(CONFIG_TRACING))
+ (defined(CONFIG_SLAB) && defined(CONFIG_TRACING)) || \
+ (defined(CONFIG_SLOB) && defined(CONFIG_TRACING))
extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node_track_caller(size, flags, node, \
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 0c634fa..e98caeb 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -45,7 +45,6 @@
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);
@@ -112,19 +111,13 @@
void *__kmalloc(size_t size, gfp_t flags);
#ifdef CONFIG_TRACING
-extern void *kmem_cache_alloc_trace(size_t size,
- struct kmem_cache *cachep, gfp_t flags);
-extern size_t slab_buffer_size(struct kmem_cache *cachep);
+extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t);
#else
static __always_inline void *
-kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags)
+kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size)
{
return kmem_cache_alloc(cachep, flags);
}
-static inline size_t slab_buffer_size(struct kmem_cache *cachep)
-{
- return 0;
-}
#endif
static __always_inline void *kmalloc(size_t size, gfp_t flags)
@@ -154,7 +147,7 @@
#endif
cachep = malloc_sizes[i].cs_cachep;
- ret = kmem_cache_alloc_trace(size, cachep, flags);
+ ret = kmem_cache_alloc_trace(cachep, flags, size);
return ret;
}
diff --git a/include/linux/slob_def.h b/include/linux/slob_def.h
index 0ec00b3..f28e14a 100644
--- a/include/linux/slob_def.h
+++ b/include/linux/slob_def.h
@@ -1,12 +1,14 @@
#ifndef __LINUX_SLOB_DEF_H
#define __LINUX_SLOB_DEF_H
+#include <linux/numa.h>
+
void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep,
gfp_t flags)
{
- return kmem_cache_alloc_node(cachep, flags, -1);
+ return kmem_cache_alloc_node(cachep, flags, NUMA_NO_NODE);
}
void *__kmalloc_node(size_t size, gfp_t flags, int node);
@@ -26,7 +28,7 @@
*/
static __always_inline void *kmalloc(size_t size, gfp_t flags)
{
- return __kmalloc_node(size, flags, -1);
+ return __kmalloc_node(size, flags, NUMA_NO_NODE);
}
static __always_inline void *__kmalloc(size_t size, gfp_t flags)
diff --git a/mm/slab.c b/mm/slab.c
index c685475..d264d90 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -498,14 +498,6 @@
#endif
-#ifdef CONFIG_TRACING
-size_t slab_buffer_size(struct kmem_cache *cachep)
-{
- return cachep->size;
-}
-EXPORT_SYMBOL(slab_buffer_size);
-#endif
-
/*
* Do not go above this order unless 0 objects fit into the slab or
* overridden on the command line.
@@ -515,13 +507,6 @@
static int slab_max_order = SLAB_MAX_ORDER_LO;
static bool slab_max_order_set __initdata;
-static inline struct kmem_cache *page_get_cache(struct page *page)
-{
- page = compound_head(page);
- BUG_ON(!PageSlab(page));
- return page->slab_cache;
-}
-
static inline struct kmem_cache *virt_to_cache(const void *obj)
{
struct page *page = virt_to_head_page(obj);
@@ -818,6 +803,7 @@
printk(KERN_ERR "slab error in %s(): cache `%s': %s\n",
function, cachep->name, msg);
dump_stack();
+ add_taint(TAINT_BAD_PAGE);
}
/*
@@ -1781,9 +1767,6 @@
slab_state = UP;
- /* Annotate slab for lockdep -- annotate the malloc caches */
- init_lock_keys();
-
/* 6) resize the head arrays to their final sizes */
mutex_lock(&slab_mutex);
list_for_each_entry(cachep, &slab_caches, list)
@@ -1791,6 +1774,9 @@
BUG();
mutex_unlock(&slab_mutex);
+ /* Annotate slab for lockdep -- annotate the malloc caches */
+ init_lock_keys();
+
/* Done! */
slab_state = FULL;
@@ -2506,8 +2492,9 @@
}
#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC)
if (size >= malloc_sizes[INDEX_L3 + 1].cs_size
- && cachep->object_size > cache_line_size() && ALIGN(size, align) < PAGE_SIZE) {
- cachep->obj_offset += PAGE_SIZE - ALIGN(size, align);
+ && cachep->object_size > cache_line_size()
+ && ALIGN(size, cachep->align) < PAGE_SIZE) {
+ cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align);
size = PAGE_SIZE;
}
#endif
@@ -3098,7 +3085,7 @@
}
static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp,
- void *caller)
+ unsigned long caller)
{
struct page *page;
unsigned int objnr;
@@ -3118,7 +3105,7 @@
*dbg_redzone2(cachep, objp) = RED_INACTIVE;
}
if (cachep->flags & SLAB_STORE_USER)
- *dbg_userword(cachep, objp) = caller;
+ *dbg_userword(cachep, objp) = (void *)caller;
objnr = obj_to_index(cachep, slabp, objp);
@@ -3131,7 +3118,7 @@
if (cachep->flags & SLAB_POISON) {
#ifdef CONFIG_DEBUG_PAGEALLOC
if ((cachep->size % PAGE_SIZE)==0 && OFF_SLAB(cachep)) {
- store_stackinfo(cachep, objp, (unsigned long)caller);
+ store_stackinfo(cachep, objp, caller);
kernel_map_pages(virt_to_page(objp),
cachep->size / PAGE_SIZE, 0);
} else {
@@ -3285,7 +3272,7 @@
#if DEBUG
static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
- gfp_t flags, void *objp, void *caller)
+ gfp_t flags, void *objp, unsigned long caller)
{
if (!objp)
return objp;
@@ -3302,7 +3289,7 @@
poison_obj(cachep, objp, POISON_INUSE);
}
if (cachep->flags & SLAB_STORE_USER)
- *dbg_userword(cachep, objp) = caller;
+ *dbg_userword(cachep, objp) = (void *)caller;
if (cachep->flags & SLAB_RED_ZONE) {
if (*dbg_redzone1(cachep, objp) != RED_INACTIVE ||
@@ -3576,8 +3563,8 @@
* Fallback to other node is possible if __GFP_THISNODE is not set.
*/
static __always_inline void *
-__cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
- void *caller)
+slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
+ unsigned long caller)
{
unsigned long save_flags;
void *ptr;
@@ -3663,7 +3650,7 @@
#endif /* CONFIG_NUMA */
static __always_inline void *
-__cache_alloc(struct kmem_cache *cachep, gfp_t flags, void *caller)
+slab_alloc(struct kmem_cache *cachep, gfp_t flags, unsigned long caller)
{
unsigned long save_flags;
void *objp;
@@ -3799,7 +3786,7 @@
* be in this state _before_ it is released. Called with disabled ints.
*/
static inline void __cache_free(struct kmem_cache *cachep, void *objp,
- void *caller)
+ unsigned long caller)
{
struct array_cache *ac = cpu_cache_get(cachep);
@@ -3839,7 +3826,7 @@
*/
void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
{
- void *ret = __cache_alloc(cachep, flags, __builtin_return_address(0));
+ void *ret = slab_alloc(cachep, flags, _RET_IP_);
trace_kmem_cache_alloc(_RET_IP_, ret,
cachep->object_size, cachep->size, flags);
@@ -3850,14 +3837,14 @@
#ifdef CONFIG_TRACING
void *
-kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags)
+kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size)
{
void *ret;
- ret = __cache_alloc(cachep, flags, __builtin_return_address(0));
+ ret = slab_alloc(cachep, flags, _RET_IP_);
trace_kmalloc(_RET_IP_, ret,
- size, slab_buffer_size(cachep), flags);
+ size, cachep->size, flags);
return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc_trace);
@@ -3866,8 +3853,7 @@
#ifdef CONFIG_NUMA
void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)
{
- void *ret = __cache_alloc_node(cachep, flags, nodeid,
- __builtin_return_address(0));
+ void *ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP_);
trace_kmem_cache_alloc_node(_RET_IP_, ret,
cachep->object_size, cachep->size,
@@ -3878,17 +3864,17 @@
EXPORT_SYMBOL(kmem_cache_alloc_node);
#ifdef CONFIG_TRACING
-void *kmem_cache_alloc_node_trace(size_t size,
- struct kmem_cache *cachep,
+void *kmem_cache_alloc_node_trace(struct kmem_cache *cachep,
gfp_t flags,
- int nodeid)
+ int nodeid,
+ size_t size)
{
void *ret;
- ret = __cache_alloc_node(cachep, flags, nodeid,
- __builtin_return_address(0));
+ ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP);
+
trace_kmalloc_node(_RET_IP_, ret,
- size, slab_buffer_size(cachep),
+ size, cachep->size,
flags, nodeid);
return ret;
}
@@ -3896,34 +3882,33 @@
#endif
static __always_inline void *
-__do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller)
+__do_kmalloc_node(size_t size, gfp_t flags, int node, unsigned long caller)
{
struct kmem_cache *cachep;
cachep = kmem_find_general_cachep(size, flags);
if (unlikely(ZERO_OR_NULL_PTR(cachep)))
return cachep;
- return kmem_cache_alloc_node_trace(size, cachep, flags, node);
+ return kmem_cache_alloc_node_trace(cachep, flags, node, size);
}
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
- return __do_kmalloc_node(size, flags, node,
- __builtin_return_address(0));
+ return __do_kmalloc_node(size, flags, node, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc_node);
void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
int node, unsigned long caller)
{
- return __do_kmalloc_node(size, flags, node, (void *)caller);
+ return __do_kmalloc_node(size, flags, node, caller);
}
EXPORT_SYMBOL(__kmalloc_node_track_caller);
#else
void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
- return __do_kmalloc_node(size, flags, node, NULL);
+ return __do_kmalloc_node(size, flags, node, 0);
}
EXPORT_SYMBOL(__kmalloc_node);
#endif /* CONFIG_DEBUG_SLAB || CONFIG_TRACING */
@@ -3936,7 +3921,7 @@
* @caller: function caller for debug tracking of the caller
*/
static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
- void *caller)
+ unsigned long caller)
{
struct kmem_cache *cachep;
void *ret;
@@ -3949,9 +3934,9 @@
cachep = __find_general_cachep(size, flags);
if (unlikely(ZERO_OR_NULL_PTR(cachep)))
return cachep;
- ret = __cache_alloc(cachep, flags, caller);
+ ret = slab_alloc(cachep, flags, caller);
- trace_kmalloc((unsigned long) caller, ret,
+ trace_kmalloc(caller, ret,
size, cachep->size, flags);
return ret;
@@ -3961,20 +3946,20 @@
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc(size_t size, gfp_t flags)
{
- return __do_kmalloc(size, flags, __builtin_return_address(0));
+ return __do_kmalloc(size, flags, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc);
void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller)
{
- return __do_kmalloc(size, flags, (void *)caller);
+ return __do_kmalloc(size, flags, caller);
}
EXPORT_SYMBOL(__kmalloc_track_caller);
#else
void *__kmalloc(size_t size, gfp_t flags)
{
- return __do_kmalloc(size, flags, NULL);
+ return __do_kmalloc(size, flags, 0);
}
EXPORT_SYMBOL(__kmalloc);
#endif
@@ -3995,7 +3980,7 @@
debug_check_no_locks_freed(objp, cachep->object_size);
if (!(cachep->flags & SLAB_DEBUG_OBJECTS))
debug_check_no_obj_freed(objp, cachep->object_size);
- __cache_free(cachep, objp, __builtin_return_address(0));
+ __cache_free(cachep, objp, _RET_IP_);
local_irq_restore(flags);
trace_kmem_cache_free(_RET_IP_, objp);
@@ -4026,7 +4011,7 @@
debug_check_no_locks_freed(objp, c->object_size);
debug_check_no_obj_freed(objp, c->object_size);
- __cache_free(c, (void *)objp, __builtin_return_address(0));
+ __cache_free(c, (void *)objp, _RET_IP_);
local_irq_restore(flags);
}
EXPORT_SYMBOL(kfree);
diff --git a/mm/slab_common.c b/mm/slab_common.c
index aa3ca5b..8cf8b49 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -23,6 +23,52 @@
LIST_HEAD(slab_caches);
DEFINE_MUTEX(slab_mutex);
+#ifdef CONFIG_DEBUG_VM
+static int kmem_cache_sanity_check(const char *name, size_t size)
+{
+ struct kmem_cache *s = NULL;
+
+ if (!name || in_interrupt() || size < sizeof(void *) ||
+ size > KMALLOC_MAX_SIZE) {
+ pr_err("kmem_cache_create(%s) integrity check failed\n", name);
+ return -EINVAL;
+ }
+
+ list_for_each_entry(s, &slab_caches, list) {
+ char tmp;
+ int res;
+
+ /*
+ * This happens when the module gets unloaded and doesn't
+ * destroy its slab cache and no-one else reuses the vmalloc
+ * area of the module. Print a warning.
+ */
+ res = probe_kernel_address(s->name, tmp);
+ if (res) {
+ pr_err("Slab cache with size %d has lost its name\n",
+ s->object_size);
+ continue;
+ }
+
+ if (!strcmp(s->name, name)) {
+ pr_err("%s (%s): Cache name already exists.\n",
+ __func__, name);
+ dump_stack();
+ s = NULL;
+ return -EINVAL;
+ }
+ }
+
+ WARN_ON(strchr(name, ' ')); /* It confuses parsers */
+ return 0;
+}
+#else
+static inline int kmem_cache_sanity_check(const char *name, size_t size)
+{
+ return 0;
+}
+#endif
+
/*
* kmem_cache_create - Create a cache.
* @name: A string which is used in /proc/slabinfo to identify this cache.
@@ -53,60 +99,13 @@
{
struct kmem_cache *s = NULL;
-#ifdef CONFIG_DEBUG_VM
- if (!name || in_interrupt() || size < sizeof(void *) ||
- size > KMALLOC_MAX_SIZE) {
- printk(KERN_ERR "kmem_cache_create(%s) integrity check"
- " failed\n", name);
- goto out;
- }
-#endif
-
get_online_cpus();
mutex_lock(&slab_mutex);
-
-#ifdef CONFIG_DEBUG_VM
- list_for_each_entry(s, &slab_caches, list) {
- char tmp;
- int res;
-
- /*
- * This happens when the module gets unloaded and doesn't
- * destroy its slab cache and no-one else reuses the vmalloc
- * area of the module. Print a warning.
- */
- res = probe_kernel_address(s->name, tmp);
- if (res) {
- printk(KERN_ERR
- "Slab cache with size %d has lost its name\n",
- s->object_size);
- continue;
- }
-
- if (!strcmp(s->name, name)) {
- printk(KERN_ERR "kmem_cache_create(%s): Cache name"
- " already exists.\n",
- name);
- dump_stack();
- s = NULL;
- goto oops;
- }
- }
-
- WARN_ON(strchr(name, ' ')); /* It confuses parsers */
-#endif
-
- s = __kmem_cache_create(name, size, align, flags, ctor);
-
-#ifdef CONFIG_DEBUG_VM
-oops:
-#endif
+ if (kmem_cache_sanity_check(name, size) == 0)
+ s = __kmem_cache_create(name, size, align, flags, ctor);
mutex_unlock(&slab_mutex);
put_online_cpus();
-#ifdef CONFIG_DEBUG_VM
-out:
-#endif
if (!s && (flags & SLAB_PANIC))
panic("kmem_cache_create: Failed to create slab '%s'\n", name);
diff --git a/mm/slob.c b/mm/slob.c
index 45d4ca7..dd47d16 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -194,7 +194,7 @@
void *page;
#ifdef CONFIG_NUMA
- if (node != -1)
+ if (node != NUMA_NO_NODE)
page = alloc_pages_exact_node(node, gfp, order);
else
#endif
@@ -290,7 +290,7 @@
* If there's a node specification, search for a partial
* page with a matching node id in the freelist.
*/
- if (node != -1 && page_to_nid(sp) != node)
+ if (node != NUMA_NO_NODE && page_to_nid(sp) != node)
continue;
#endif
/* Enough room on this page? */
@@ -425,7 +425,8 @@
* End of slob allocator proper. Begin kmem_cache_alloc and kmalloc frontend.
*/
-void *__kmalloc_node(size_t size, gfp_t gfp, int node)
+static __always_inline void *
+__do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
{
unsigned int *m;
int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
@@ -446,7 +447,7 @@
*m = size;
ret = (void *)m + align;
- trace_kmalloc_node(_RET_IP_, ret,
+ trace_kmalloc_node(caller, ret,
size, size + align, gfp, node);
} else {
unsigned int order = get_order(size);
@@ -460,15 +461,35 @@
page->private = size;
}
- trace_kmalloc_node(_RET_IP_, ret,
+ trace_kmalloc_node(caller, ret,
size, PAGE_SIZE << order, gfp, node);
}
kmemleak_alloc(ret, size, 1, gfp);
return ret;
}
+
+void *__kmalloc_node(size_t size, gfp_t gfp, int node)
+{
+ return __do_kmalloc_node(size, gfp, node, _RET_IP_);
+}
EXPORT_SYMBOL(__kmalloc_node);
+#ifdef CONFIG_TRACING
+void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
+{
+ return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, caller);
+}
+
+#ifdef CONFIG_NUMA
+void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
+ int node, unsigned long caller)
+{
+ return __do_kmalloc_node(size, gfp, node, caller);
+}
+#endif
+#endif
+
void kfree(const void *block)
{
struct page *sp;
@@ -514,7 +535,7 @@
struct kmem_cache *c;
c = slob_alloc(sizeof(struct kmem_cache),
- GFP_KERNEL, ARCH_KMALLOC_MINALIGN, -1);
+ GFP_KERNEL, ARCH_KMALLOC_MINALIGN, NUMA_NO_NODE);
if (c) {
c->name = name;
diff --git a/mm/slub.c b/mm/slub.c
index 2fdd96f..97a49d9 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -568,6 +568,8 @@
printk(KERN_ERR "BUG %s (%s): %s\n", s->name, print_tainted(), buf);
printk(KERN_ERR "----------------------------------------"
"-------------------------------------\n\n");
+
+ add_taint(TAINT_BAD_PAGE);
}
static void slab_fix(struct kmem_cache *s, char *fmt, ...)
@@ -1069,13 +1071,13 @@
return 0;
}
-static noinline int free_debug_processing(struct kmem_cache *s,
- struct page *page, void *object, unsigned long addr)
+static noinline struct kmem_cache_node *free_debug_processing(
+ struct kmem_cache *s, struct page *page, void *object,
+ unsigned long addr, unsigned long *flags)
{
- unsigned long flags;
- int rc = 0;
+ struct kmem_cache_node *n = get_node(s, page_to_nid(page));
- local_irq_save(flags);
+ spin_lock_irqsave(&n->list_lock, *flags);
slab_lock(page);
if (!check_slab(s, page))
@@ -1113,15 +1115,19 @@
set_track(s, object, TRACK_FREE, addr);
trace(s, page, object, 0);
init_object(s, object, SLUB_RED_INACTIVE);
- rc = 1;
out:
slab_unlock(page);
- local_irq_restore(flags);
- return rc;
+ /*
+ * Keep node_lock to preserve integrity
+ * until the object is actually freed
+ */
+ return n;
fail:
+ slab_unlock(page);
+ spin_unlock_irqrestore(&n->list_lock, *flags);
slab_fix(s, "Object at 0x%p not freed", object);
- goto out;
+ return NULL;
}
static int __init setup_slub_debug(char *str)
@@ -1214,8 +1220,9 @@
static inline int alloc_debug_processing(struct kmem_cache *s,
struct page *page, void *object, unsigned long addr) { return 0; }
-static inline int free_debug_processing(struct kmem_cache *s,
- struct page *page, void *object, unsigned long addr) { return 0; }
+static inline struct kmem_cache_node *free_debug_processing(
+ struct kmem_cache *s, struct page *page, void *object,
+ unsigned long addr, unsigned long *flags) { return NULL; }
static inline int slab_pad_check(struct kmem_cache *s, struct page *page)
{ return 1; }
@@ -1714,7 +1721,7 @@
stat(s, CMPXCHG_DOUBLE_CPU_FAIL);
}
-void init_kmem_cache_cpus(struct kmem_cache *s)
+static void init_kmem_cache_cpus(struct kmem_cache *s)
{
int cpu;
@@ -1939,7 +1946,7 @@
* If we did not find a slot then simply move all the partials to the
* per node partial list.
*/
-int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
+static int put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
{
struct page *oldpage;
int pages;
@@ -1962,6 +1969,7 @@
local_irq_save(flags);
unfreeze_partials(s);
local_irq_restore(flags);
+ oldpage = NULL;
pobjects = 0;
pages = 0;
stat(s, CPU_PARTIAL_DRAIN);
@@ -2310,7 +2318,7 @@
*
* Otherwise we can simply pick the next object from the lockless free list.
*/
-static __always_inline void *slab_alloc(struct kmem_cache *s,
+static __always_inline void *slab_alloc_node(struct kmem_cache *s,
gfp_t gfpflags, int node, unsigned long addr)
{
void **object;
@@ -2380,9 +2388,15 @@
return object;
}
+static __always_inline void *slab_alloc(struct kmem_cache *s,
+ gfp_t gfpflags, unsigned long addr)
+{
+ return slab_alloc_node(s, gfpflags, NUMA_NO_NODE, addr);
+}
+
void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
{
- void *ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);
+ void *ret = slab_alloc(s, gfpflags, _RET_IP_);
trace_kmem_cache_alloc(_RET_IP_, ret, s->object_size, s->size, gfpflags);
@@ -2393,7 +2407,7 @@
#ifdef CONFIG_TRACING
void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
{
- void *ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);
+ void *ret = slab_alloc(s, gfpflags, _RET_IP_);
trace_kmalloc(_RET_IP_, ret, size, s->size, gfpflags);
return ret;
}
@@ -2411,7 +2425,7 @@
#ifdef CONFIG_NUMA
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
{
- void *ret = slab_alloc(s, gfpflags, node, _RET_IP_);
+ void *ret = slab_alloc_node(s, gfpflags, node, _RET_IP_);
trace_kmem_cache_alloc_node(_RET_IP_, ret,
s->object_size, s->size, gfpflags, node);
@@ -2425,7 +2439,7 @@
gfp_t gfpflags,
int node, size_t size)
{
- void *ret = slab_alloc(s, gfpflags, node, _RET_IP_);
+ void *ret = slab_alloc_node(s, gfpflags, node, _RET_IP_);
trace_kmalloc_node(_RET_IP_, ret,
size, s->size, gfpflags, node);
@@ -2457,7 +2471,8 @@
stat(s, FREE_SLOWPATH);
- if (kmem_cache_debug(s) && !free_debug_processing(s, page, x, addr))
+ if (kmem_cache_debug(s) &&
+ !(n = free_debug_processing(s, page, x, addr, &flags)))
return;
do {
@@ -3362,7 +3377,7 @@
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, flags, NUMA_NO_NODE, _RET_IP_);
+ ret = slab_alloc(s, flags, _RET_IP_);
trace_kmalloc(_RET_IP_, ret, size, s->size, flags);
@@ -3405,7 +3420,7 @@
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, flags, node, _RET_IP_);
+ ret = slab_alloc_node(s, flags, node, _RET_IP_);
trace_kmalloc_node(_RET_IP_, ret, size, s->size, flags, node);
@@ -3482,7 +3497,7 @@
if (unlikely(!PageSlab(page))) {
BUG_ON(!PageCompound(page));
kmemleak_free(x);
- put_page(page);
+ __free_pages(page, compound_order(page));
return;
}
slab_free(page->slab, page, object, _RET_IP_);
@@ -4033,7 +4048,7 @@
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, caller);
+ ret = slab_alloc(s, gfpflags, caller);
/* Honor the call site pointer we received. */
trace_kmalloc(caller, ret, size, s->size, gfpflags);
@@ -4063,7 +4078,7 @@
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- ret = slab_alloc(s, gfpflags, node, caller);
+ ret = slab_alloc_node(s, gfpflags, node, caller);
/* Honor the call site pointer we received. */
trace_kmalloc_node(caller, ret, size, s->size, gfpflags, node);
diff --git a/mm/util.c b/mm/util.c
index 8c7265a..dc3036c 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -105,24 +105,12 @@
}
EXPORT_SYMBOL(memdup_user);
-/**
- * __krealloc - like krealloc() but don't free @p.
- * @p: object to reallocate memory for.
- * @new_size: how many bytes of memory are required.
- * @flags: the type of memory to allocate.
- *
- * This function is like krealloc() except it never frees the originally
- * allocated buffer. Use this if you don't want to free the buffer immediately
- * like, for example, with RCU.
- */
-void *__krealloc(const void *p, size_t new_size, gfp_t flags)
+static __always_inline void *__do_krealloc(const void *p, size_t new_size,
+ gfp_t flags)
{
void *ret;
size_t ks = 0;
- if (unlikely(!new_size))
- return ZERO_SIZE_PTR;
-
if (p)
ks = ksize(p);
@@ -135,6 +123,25 @@
return ret;
}
+
+/**
+ * __krealloc - like krealloc() but don't free @p.
+ * @p: object to reallocate memory for.
+ * @new_size: how many bytes of memory are required.
+ * @flags: the type of memory to allocate.
+ *
+ * This function is like krealloc() except it never frees the originally
+ * allocated buffer. Use this if you don't want to free the buffer immediately
+ * like, for example, with RCU.
+ */
+void *__krealloc(const void *p, size_t new_size, gfp_t flags)
+{
+ if (unlikely(!new_size))
+ return ZERO_SIZE_PTR;
+
+ return __do_krealloc(p, new_size, flags);
+
+}
EXPORT_SYMBOL(__krealloc);
/**
@@ -157,7 +164,7 @@
return ZERO_SIZE_PTR;
}
- ret = __krealloc(p, new_size, flags);
+ ret = __do_krealloc(p, new_size, flags);
if (ret && p != ret)
kfree(p);