[3.12 1/5] Move kmalloc_node functions to common code

[3.12 1/5] Move kmalloc_node functions to common code

[Christoph Lameter]

The kmalloc_node functions of all slab allcoators are similar now so
lets move them into slab.h. This requires some function naming changes
in slob.

Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/include/linux/slab.h
===================================================================
--- linux.orig/include/linux/slab.h	2013-07-15 09:25:30.055679733 -0500
+++ linux/include/linux/slab.h	2013-07-15 09:38:34.633019260 -0500
@@ -289,6 +289,50 @@ static __always_inline int kmalloc_index
 }
 #endif /* !CONFIG_SLOB */
 
+void *__kmalloc(size_t size, gfp_t flags);
+void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags);
+
+#ifdef CONFIG_NUMA
+void *__kmalloc_node(size_t size, gfp_t flags, int node);
+void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
+#else
+static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
+{
+	return __kmalloc(size, flags);
+}
+
+static __always_inline void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t flags, int node)
+{
+	return kmem_cache_alloc(s, flags);
+}
+#endif
+
+#ifdef CONFIG_TRACING
+
+#ifdef CONFIG_NUMA
+extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
+					   gfp_t gfpflags,
+					   int node, size_t size);
+#else
+static __always_inline void *
+kmem_cache_alloc_node_trace(struct kmem_cache *s,
+				gfp_t gfpflags,
+				int node, size_t size)
+{
+	return kmem_cache_alloc_trace(s, gfpflags, size);
+}
+#endif /* CONFIG_NUMA */
+
+#else
+static __always_inline void *
+kmem_cache_alloc_node_trace(struct kmem_cache *s,
+			      gfp_t gfpflags,
+			      int node, size_t size)
+{
+	return kmem_cache_alloc_node(s, gfpflags, node);
+}
+#endif /* CONFIG_TRACING */
+
 #ifdef CONFIG_SLAB
 #include <linux/slab_def.h>
 #endif
@@ -321,6 +365,23 @@ static __always_inline int kmalloc_size(
 	return 0;
 }
 
+static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
+{
+#ifndef CONFIG_SLOB
+	if (__builtin_constant_p(size) &&
+		size <= KMALLOC_MAX_CACHE_SIZE && !(flags & SLAB_CACHE_DMA)) {
+		int i = kmalloc_index(size);
+
+		if (!i)
+			return ZERO_SIZE_PTR;
+
+		return kmem_cache_alloc_node_trace(kmalloc_caches[i],
+			       			flags, node, size);
+	}
+#endif
+	return __kmalloc_node(size, flags, node);
+}
+
 /*
  * Setting ARCH_SLAB_MINALIGN in arch headers allows a different alignment.
  * Intended for arches that get misalignment faults even for 64 bit integer
Index: linux/include/linux/slub_def.h
===================================================================
--- linux.orig/include/linux/slub_def.h	2013-07-15 09:25:30.055679733 -0500
+++ linux/include/linux/slub_def.h	2013-07-15 09:37:59.000000000 -0500
@@ -104,9 +104,6 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
-void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
-void *__kmalloc(size_t size, gfp_t flags);
-
 static __always_inline void *
 kmalloc_order(size_t size, gfp_t flags, unsigned int order)
 {
@@ -174,38 +171,4 @@ static __always_inline void *kmalloc(siz
 	return __kmalloc(size, flags);
 }
 
-#ifdef CONFIG_NUMA
-void *__kmalloc_node(size_t size, gfp_t flags, int node);
-void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
-
-#ifdef CONFIG_TRACING
-extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
-					   gfp_t gfpflags,
-					   int node, size_t size);
-#else
-static __always_inline void *
-kmem_cache_alloc_node_trace(struct kmem_cache *s,
-			      gfp_t gfpflags,
-			      int node, size_t size)
-{
-	return kmem_cache_alloc_node(s, gfpflags, node);
-}
-#endif
-
-static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	if (__builtin_constant_p(size) &&
-		size <= KMALLOC_MAX_CACHE_SIZE && !(flags & GFP_DMA)) {
-		int index = kmalloc_index(size);
-
-		if (!index)
-			return ZERO_SIZE_PTR;
-
-		return kmem_cache_alloc_node_trace(kmalloc_caches[index],
-			       flags, node, size);
-	}
-	return __kmalloc_node(size, flags, node);
-}
-#endif
-
 #endif /* _LINUX_SLUB_DEF_H */
Index: linux/include/linux/slab_def.h
===================================================================
--- linux.orig/include/linux/slab_def.h	2013-07-15 09:25:30.055679733 -0500
+++ linux/include/linux/slab_def.h	2013-07-15 09:37:59.000000000 -0500
@@ -102,9 +102,6 @@ struct kmem_cache {
 	 */
 };
 
-void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
-void *__kmalloc(size_t size, gfp_t flags);
-
 #ifdef CONFIG_TRACING
 extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t);
 #else
@@ -145,53 +142,4 @@ static __always_inline void *kmalloc(siz
 	return __kmalloc(size, flags);
 }
 
-#ifdef CONFIG_NUMA
-extern void *__kmalloc_node(size_t size, gfp_t flags, int node);
-extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
-
-#ifdef CONFIG_TRACING
-extern void *kmem_cache_alloc_node_trace(struct kmem_cache *cachep,
-					 gfp_t flags,
-					 int nodeid,
-					 size_t size);
-#else
-static __always_inline void *
-kmem_cache_alloc_node_trace(struct kmem_cache *cachep,
-			    gfp_t flags,
-			    int nodeid,
-			    size_t size)
-{
-	return kmem_cache_alloc_node(cachep, flags, nodeid);
-}
-#endif
-
-static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	struct kmem_cache *cachep;
-
-	if (__builtin_constant_p(size)) {
-		int i;
-
-		if (!size)
-			return ZERO_SIZE_PTR;
-
-		if (WARN_ON_ONCE(size > KMALLOC_MAX_SIZE))
-			return NULL;
-
-		i = kmalloc_index(size);
-
-#ifdef CONFIG_ZONE_DMA
-		if (flags & GFP_DMA)
-			cachep = kmalloc_dma_caches[i];
-		else
-#endif
-			cachep = kmalloc_caches[i];
-
-		return kmem_cache_alloc_node_trace(cachep, flags, node, size);
-	}
-	return __kmalloc_node(size, flags, node);
-}
-
-#endif	/* CONFIG_NUMA */
-
 #endif	/* _LINUX_SLAB_DEF_H */
Index: linux/include/linux/slob_def.h
===================================================================
--- linux.orig/include/linux/slob_def.h	2013-07-15 09:25:30.055679733 -0500
+++ linux/include/linux/slob_def.h	2013-07-15 09:37:59.000000000 -0500
@@ -1,31 +1,9 @@
 #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, NUMA_NO_NODE);
-}
-
-void *__kmalloc_node(size_t size, gfp_t flags, int node);
-
-static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	return __kmalloc_node(size, flags, node);
-}
-
 static __always_inline void *kmalloc(size_t size, gfp_t flags)
 {
 	return __kmalloc_node(size, flags, NUMA_NO_NODE);
 }
 
-static __always_inline void *__kmalloc(size_t size, gfp_t flags)
-{
-	return kmalloc(size, flags);
-}
-
 #endif /* __LINUX_SLOB_DEF_H */
Index: linux/mm/slob.c
===================================================================
--- linux.orig/mm/slob.c	2013-07-15 09:25:30.055679733 -0500
+++ linux/mm/slob.c	2013-07-15 09:25:30.051679666 -0500
@@ -462,11 +462,11 @@ __do_kmalloc_node(size_t size, gfp_t gfp
 	return ret;
 }
 
-void *__kmalloc_node(size_t size, gfp_t gfp, int node)
+void *__kmalloc(size_t size, gfp_t gfp)
 {
-	return __do_kmalloc_node(size, gfp, node, _RET_IP_);
+	return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, _RET_IP_);
 }
-EXPORT_SYMBOL(__kmalloc_node);
+EXPORT_SYMBOL(__kmalloc);
 
 #ifdef CONFIG_TRACING
 void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
@@ -534,7 +534,7 @@ int __kmem_cache_create(struct kmem_cach
 	return 0;
 }
 
-void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
+void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
 {
 	void *b;
 
@@ -560,7 +560,27 @@ void *kmem_cache_alloc_node(struct kmem_
 	kmemleak_alloc_recursive(b, c->size, 1, c->flags, flags);
 	return b;
 }
+EXPORT_SYMBOL(slob_alloc_node);
+
+void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
+{
+	return slob_alloc_node(cachep, flags, NUMA_NO_NODE);
+}
+EXPORT_SYMBOL(kmem_cache_alloc);
+
+#ifdef CONFIG_NUMA
+void *__kmalloc_node(size_t size, gfp_t gfp, int node)
+{
+	return __do_kmalloc_node(size, gfp, node, _RET_IP_);
+}
+EXPORT_SYMBOL(__kmalloc_node);
+
+void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t gfp, int node)
+{
+	return slob_alloc_node(cachep, gfp, node);
+}
 EXPORT_SYMBOL(kmem_cache_alloc_node);
+#endif
 
 static void __kmem_cache_free(void *b, int size)
 {

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[3.12 2/5] Move kmalloc definitions to slab.h

[Christoph Lameter]

All the kmallocs are mostly doing the same. Unify them.

slob_def.h becomes empty. So remove it.

Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/include/linux/slab.h
===================================================================
--- linux.orig/include/linux/slab.h	2013-07-15 09:38:40.853127741 -0500
+++ linux/include/linux/slab.h	2013-07-15 09:39:49.026313739 -0500
@@ -4,6 +4,8 @@
  * (C) SGI 2006, Christoph Lameter
  * 	Cleaned up and restructured to ease the addition of alternative
  * 	implementations of SLAB allocators.
+ * (C) Linux Foundation 2008-2013
+ *      Unified interface for all slab allocators
  */
 
 #ifndef _LINUX_SLAB_H
@@ -94,6 +96,7 @@
 #define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
 				(unsigned long)ZERO_SIZE_PTR)
 
+#include <linux/kmemleak.h>
 
 struct mem_cgroup;
 /*
@@ -308,6 +311,7 @@ static __always_inline void *kmem_cache_
 #endif
 
 #ifdef CONFIG_TRACING
+extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t);
 
 #ifdef CONFIG_NUMA
 extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
@@ -316,14 +320,20 @@ extern void *kmem_cache_alloc_node_trace
 #else
 static __always_inline void *
 kmem_cache_alloc_node_trace(struct kmem_cache *s,
-				gfp_t gfpflags,
-				int node, size_t size)
+			      gfp_t gfpflags,
+			      int node, size_t size)
 {
 	return kmem_cache_alloc_trace(s, gfpflags, size);
 }
 #endif /* CONFIG_NUMA */
 
-#else
+#else /* CONFIG_TRACING */
+static __always_inline void *kmem_cache_alloc_trace(struct kmem_cache *s,
+		gfp_t flags, size_t size)
+{
+	return kmem_cache_alloc(s, flags);
+}
+
 static __always_inline void *
 kmem_cache_alloc_node_trace(struct kmem_cache *s,
 			      gfp_t gfpflags,
@@ -341,10 +351,61 @@ kmem_cache_alloc_node_trace(struct kmem_
 #include <linux/slub_def.h>
 #endif
 
-#ifdef CONFIG_SLOB
-#include <linux/slob_def.h>
+static __always_inline void *
+kmalloc_order(size_t size, gfp_t flags, unsigned int order)
+{
+	void *ret;
+
+	flags |= (__GFP_COMP | __GFP_KMEMCG);
+	ret = (void *) __get_free_pages(flags, order);
+	kmemleak_alloc(ret, size, 1, flags);
+	return ret;
+}
+
+#ifdef CONFIG_TRACING
+extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order);
+#else
+static __always_inline void *
+kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
+{
+	return kmalloc_order(size, flags, order);
+}
 #endif
 
+static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
+{
+	unsigned int order = get_order(size);
+	return kmalloc_order_trace(size, flags, order);
+}
+
+/**
+ * kmalloc - allocate memory
+ * @size: how many bytes of memory are required.
+ * @flags: the type of memory to allocate (see kcalloc).
+ *
+ * kmalloc is the normal method of allocating memory
+ * for objects smaller than page size in the kernel.
+ */
+static __always_inline void *kmalloc(size_t size, gfp_t flags)
+{
+	if (__builtin_constant_p(size)) {
+		if (size > KMALLOC_MAX_CACHE_SIZE)
+			return kmalloc_large(size, flags);
+#ifndef CONFIG_SLOB
+		if (!(flags & GFP_DMA)) {
+			int index = kmalloc_index(size);
+
+			if (!index)
+				return ZERO_SIZE_PTR;
+
+			return kmem_cache_alloc_trace(kmalloc_caches[index],
+					flags, size);
+		}
+#endif
+	}
+	return __kmalloc(size, flags);
+}
+
 /*
  * Determine size used for the nth kmalloc cache.
  * return size or 0 if a kmalloc cache for that
Index: linux/include/linux/slab_def.h
===================================================================
--- linux.orig/include/linux/slab_def.h	2013-07-15 09:38:40.853127741 -0500
+++ linux/include/linux/slab_def.h	2013-07-15 09:38:40.853127741 -0500
@@ -102,44 +102,4 @@ struct kmem_cache {
 	 */
 };
 
-#ifdef CONFIG_TRACING
-extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t);
-#else
-static __always_inline void *
-kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size)
-{
-	return kmem_cache_alloc(cachep, flags);
-}
-#endif
-
-static __always_inline void *kmalloc(size_t size, gfp_t flags)
-{
-	struct kmem_cache *cachep;
-	void *ret;
-
-	if (__builtin_constant_p(size)) {
-		int i;
-
-		if (!size)
-			return ZERO_SIZE_PTR;
-
-		if (WARN_ON_ONCE(size > KMALLOC_MAX_SIZE))
-			return NULL;
-
-		i = kmalloc_index(size);
-
-#ifdef CONFIG_ZONE_DMA
-		if (flags & GFP_DMA)
-			cachep = kmalloc_dma_caches[i];
-		else
-#endif
-			cachep = kmalloc_caches[i];
-
-		ret = kmem_cache_alloc_trace(cachep, flags, size);
-
-		return ret;
-	}
-	return __kmalloc(size, flags);
-}
-
 #endif	/* _LINUX_SLAB_DEF_H */
Index: linux/include/linux/slub_def.h
===================================================================
--- linux.orig/include/linux/slub_def.h	2013-07-15 09:38:40.853127741 -0500
+++ linux/include/linux/slub_def.h	2013-07-15 09:38:40.853127741 -0500
@@ -12,8 +12,6 @@
 #include <linux/workqueue.h>
 #include <linux/kobject.h>
 
-#include <linux/kmemleak.h>
-
 enum stat_item {
 	ALLOC_FASTPATH,		/* Allocation from cpu slab */
 	ALLOC_SLOWPATH,		/* Allocation by getting a new cpu slab */
@@ -104,17 +102,6 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
-static __always_inline void *
-kmalloc_order(size_t size, gfp_t flags, unsigned int order)
-{
-	void *ret;
-
-	flags |= (__GFP_COMP | __GFP_KMEMCG);
-	ret = (void *) __get_free_pages(flags, order);
-	kmemleak_alloc(ret, size, 1, flags);
-	return ret;
-}
-
 /**
  * Calling this on allocated memory will check that the memory
  * is expected to be in use, and print warnings if not.
@@ -128,47 +115,4 @@ static inline bool verify_mem_not_delete
 }
 #endif
 
-#ifdef CONFIG_TRACING
-extern void *
-kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size);
-extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order);
-#else
-static __always_inline void *
-kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
-{
-	return kmem_cache_alloc(s, gfpflags);
-}
-
-static __always_inline void *
-kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
-{
-	return kmalloc_order(size, flags, order);
-}
-#endif
-
-static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
-{
-	unsigned int order = get_order(size);
-	return kmalloc_order_trace(size, flags, order);
-}
-
-static __always_inline void *kmalloc(size_t size, gfp_t flags)
-{
-	if (__builtin_constant_p(size)) {
-		if (size > KMALLOC_MAX_CACHE_SIZE)
-			return kmalloc_large(size, flags);
-
-		if (!(flags & GFP_DMA)) {
-			int index = kmalloc_index(size);
-
-			if (!index)
-				return ZERO_SIZE_PTR;
-
-			return kmem_cache_alloc_trace(kmalloc_caches[index],
-					flags, size);
-		}
-	}
-	return __kmalloc(size, flags);
-}
-
 #endif /* _LINUX_SLUB_DEF_H */
Index: linux/include/linux/slob_def.h
===================================================================
--- linux.orig/include/linux/slob_def.h	2013-07-15 09:38:40.853127741 -0500
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,9 +0,0 @@
-#ifndef __LINUX_SLOB_DEF_H
-#define __LINUX_SLOB_DEF_H
-
-static __always_inline void *kmalloc(size_t size, gfp_t flags)
-{
-	return __kmalloc_node(size, flags, NUMA_NO_NODE);
-}
-
-#endif /* __LINUX_SLOB_DEF_H */

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[3.12 3/5] slabs: Remove unnecessary #includes

[Christoph Lameter]

Now that there are only some struct definitions left in
sl?b_def.h we can remove most of the #include statements.

Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/include/linux/slab_def.h
===================================================================
--- linux.orig/include/linux/slab_def.h	2013-07-18 11:11:59.757679886 -0500
+++ linux/include/linux/slab_def.h	2013-07-18 11:11:59.753679819 -0500
@@ -3,20 +3,6 @@
 
 /*
  * Definitions unique to the original Linux SLAB allocator.
- *
- * What we provide here is a way to optimize the frequent kmalloc
- * calls in the kernel by selecting the appropriate general cache
- * if kmalloc was called with a size that can be established at
- * compile time.
- */
-
-#include <linux/init.h>
-#include <linux/compiler.h>
-
-/*
- * struct kmem_cache
- *
- * manages a cache.
  */
 
 struct kmem_cache {
Index: linux/include/linux/slub_def.h
===================================================================
--- linux.orig/include/linux/slub_def.h	2013-07-18 11:11:59.757679886 -0500
+++ linux/include/linux/slub_def.h	2013-07-18 11:13:32.000000000 -0500
@@ -6,10 +6,6 @@
  *
  * (C) 2007 SGI, Christoph Lameter
  */
-#include <linux/types.h>
-#include <linux/gfp.h>
-#include <linux/bug.h>
-#include <linux/workqueue.h>
 #include <linux/kobject.h>
 
 enum stat_item {

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[3.12 5/5] seq_file: Use kmalloc_large for page sized allocation

[Christoph Lameter]

There is no point in using the slab allocation functions for
large page order allocation. Use kmalloc_large().

This fixes the warning about large allocs but it will still cause
large contiguous allocs that could fail because of memory fragmentation.

Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/fs/seq_file.c
===================================================================
--- linux.orig/fs/seq_file.c	2013-07-31 10:39:03.050472030 -0500
+++ linux/fs/seq_file.c	2013-07-31 10:39:03.050472030 -0500
@@ -136,7 +136,7 @@ static int traverse(struct seq_file *m,
 Eoverflow:
 	m->op->stop(m, p);
 	kfree(m->buf);
-	m->buf = kmalloc(m->size <<= 1, GFP_KERNEL);
+	m->buf = kmalloc_large(m->size <<= 1, GFP_KERNEL);
 	return !m->buf ? -ENOMEM : -EAGAIN;
 }
 
@@ -232,7 +232,7 @@ ssize_t seq_read(struct file *file, char
 			goto Fill;
 		m->op->stop(m, p);
 		kfree(m->buf);
-		m->buf = kmalloc(m->size <<= 1, GFP_KERNEL);
+		m->buf = kmalloc_large(m->size <<= 1, GFP_KERNEL);
 		if (!m->buf)
 			goto Enomem;
 		m->count = 0;

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[3.12 4/5] slub: remove verify_mem_not_deleted()

[Christoph Lameter]

I do not see any user for this code in the tree.

Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/include/linux/slub_def.h
===================================================================
--- linux.orig/include/linux/slub_def.h	2013-07-19 09:08:35.184029519 -0500
+++ linux/include/linux/slub_def.h	2013-07-19 09:08:35.180029449 -0500
@@ -98,17 +98,4 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
-/**
- * Calling this on allocated memory will check that the memory
- * is expected to be in use, and print warnings if not.
- */
-#ifdef CONFIG_SLUB_DEBUG
-extern bool verify_mem_not_deleted(const void *x);
-#else
-static inline bool verify_mem_not_deleted(const void *x)
-{
-	return true;
-}
-#endif
-
 #endif /* _LINUX_SLUB_DEF_H */
Index: linux/mm/slub.c
===================================================================
--- linux.orig/mm/slub.c	2013-07-19 09:06:36.000000000 -0500
+++ linux/mm/slub.c	2013-07-19 09:09:02.492486583 -0500
@@ -3319,42 +3319,6 @@ size_t ksize(const void *object)
 }
 EXPORT_SYMBOL(ksize);
 
-#ifdef CONFIG_SLUB_DEBUG
-bool verify_mem_not_deleted(const void *x)
-{
-	struct page *page;
-	void *object = (void *)x;
-	unsigned long flags;
-	bool rv;
-
-	if (unlikely(ZERO_OR_NULL_PTR(x)))
-		return false;
-
-	local_irq_save(flags);
-
-	page = virt_to_head_page(x);
-	if (unlikely(!PageSlab(page))) {
-		/* maybe it was from stack? */
-		rv = true;
-		goto out_unlock;
-	}
-
-	slab_lock(page);
-	if (on_freelist(page->slab_cache, page, object)) {
-		object_err(page->slab_cache, page, object, "Object is on free-list");
-		rv = false;
-	} else {
-		rv = true;
-	}
-	slab_unlock(page);
-
-out_unlock:
-	local_irq_restore(flags);
-	return rv;
-}
-EXPORT_SYMBOL(verify_mem_not_deleted);
-#endif
-
 void kfree(const void *x)
 {
 	struct page *page;

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