[PATCH] More slab.h cleanups

More cleanups for slab.h

1. Remove tabs from weird locations as suggested by Pekka

2. Drop the check for NUMA and SLAB_DEBUG from the fallback section
   as suggested by Pekka.

3. Uses static inline for the fallback defs as also suggested by Pekka.

4. Make kmem_ptr_valid take a const * argument.

5. Separate the NUMA fallback definitions from the kmalloc_track fallback
   definitions.
Signed-off-by: NChristoph Lameter <clameter@sgi.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/linux/slab.h

@@ -55,7 +55,7 @@ void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
 void kmem_cache_free(struct kmem_cache *, void *);
 unsigned int kmem_cache_size(struct kmem_cache *);
 const char *kmem_cache_name(struct kmem_cache *);
-int kmem_ptr_validate(struct kmem_cache *cachep, void *ptr);
+int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr);
 
 #ifdef CONFIG_NUMA
 extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
@@ -93,19 +93,15 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
  * ways to convert kmalloc() calls to kmem_cache_alloc() invocations by selecting
  * the appropriate general cache at compile time.
  */
+
 #ifdef CONFIG_SLAB
 #include <linux/slab_def.h>
 #else
-
 /*
  * Fallback definitions for an allocator not wanting to provide
  * its own optimized kmalloc definitions (like SLOB).
  */
 
-#if defined(CONFIG_NUMA) || defined(CONFIG_DEBUG_SLAB)
-#error "SLAB fallback definitions not usable for NUMA or Slab debug"
-#endif
-
 /**
  * kmalloc - allocate memory
  * @size: how many bytes of memory are required.
@@ -151,7 +147,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
  *
  * %__GFP_REPEAT - If allocation fails initially, try once more before failing.
  */
-void *kmalloc(size_t size, gfp_t flags)
+static inline void *kmalloc(size_t size, gfp_t flags)
 {
 	return __kmalloc(size, flags);
 }
@@ -161,12 +157,24 @@ void *kmalloc(size_t size, gfp_t flags)
  * @size: how many bytes of memory are required.
  * @flags: the type of memory to allocate (see kmalloc).
  */
-void *kzalloc(size_t size, gfp_t flags)
+static inline void *kzalloc(size_t size, gfp_t flags)
 {
 	return __kzalloc(size, flags);
 }
 #endif
 
+#ifndef CONFIG_NUMA
+static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
+{
+	return kmalloc(size, flags);
+}
+
+static inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
+{
+	return __kmalloc(size, flags);
+}
+#endif /* !CONFIG_NUMA */
+
 /*
  * kmalloc_track_caller is a special version of kmalloc that records the
  * calling function of the routine calling it for slab leak tracking instead
@@ -208,12 +216,8 @@ extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
 #define kmalloc_node_track_caller(size, flags, node) \
 	kmalloc_track_caller(size, flags)
 
-static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	return kmalloc(size, flags);
-}
+#endif /* DEBUG_SLAB */
 
-#endif /* !CONFIG_NUMA */
 #endif	/* __KERNEL__ */
 #endif	/* _LINUX_SLAB_H */
 

mm/slab.c

@@ -3541,7 +3541,7 @@ EXPORT_SYMBOL(kmem_cache_zalloc);
  *
  * Currently only used for dentry validation.
  */
-int fastcall kmem_ptr_validate(struct kmem_cache *cachep, void *ptr)
+int fastcall kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr)
 {
 	unsigned long addr = (unsigned long)ptr;
 	unsigned long min_addr = PAGE_OFFSET;

mm/slob.c

@@ -334,7 +334,7 @@ int kmem_cache_shrink(struct kmem_cache *d)
 }
 EXPORT_SYMBOL(kmem_cache_shrink);
 
-int kmem_ptr_validate(struct kmem_cache *a, void *b)
+int kmem_ptr_validate(struct kmem_cache *a, const void *b)
 {
 	return 0;
 }