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-rw-r--r--mm/slab.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/mm/slab.c b/mm/slab.c
index caa8f87..348396d 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -793,8 +793,10 @@ static inline struct kmem_cache *__find_general_cachep(size_t size,
* has cs_{dma,}cachep==NULL. Thus no special case
* for large kmalloc calls required.
*/
+#ifdef CONFIG_ZONE_DMA
if (unlikely(gfpflags & GFP_DMA))
return csizep->cs_dmacachep;
+#endif
return csizep->cs_cachep;
}
@@ -1493,13 +1495,15 @@ void __init kmem_cache_init(void)
ARCH_KMALLOC_FLAGS|SLAB_PANIC,
NULL, NULL);
}
-
- sizes->cs_dmacachep = kmem_cache_create(names->name_dma,
+#ifdef CONFIG_ZONE_DMA
+ sizes->cs_dmacachep = kmem_cache_create(
+ names->name_dma,
sizes->cs_size,
ARCH_KMALLOC_MINALIGN,
ARCH_KMALLOC_FLAGS|SLAB_CACHE_DMA|
SLAB_PANIC,
NULL, NULL);
+#endif
sizes++;
names++;
}
@@ -2321,7 +2325,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
cachep->slab_size = slab_size;
cachep->flags = flags;
cachep->gfpflags = 0;
- if (flags & SLAB_CACHE_DMA)
+ if (CONFIG_ZONE_DMA_FLAG && (flags & SLAB_CACHE_DMA))
cachep->gfpflags |= GFP_DMA;
cachep->buffer_size = size;
cachep->reciprocal_buffer_size = reciprocal_value(size);
@@ -2643,10 +2647,12 @@ static void cache_init_objs(struct kmem_cache *cachep,
static void kmem_flagcheck(struct kmem_cache *cachep, gfp_t flags)
{
- if (flags & GFP_DMA)
- BUG_ON(!(cachep->gfpflags & GFP_DMA));
- else
- BUG_ON(cachep->gfpflags & GFP_DMA);
+ if (CONFIG_ZONE_DMA_FLAG) {
+ if (flags & GFP_DMA)
+ BUG_ON(!(cachep->gfpflags & GFP_DMA));
+ else
+ BUG_ON(cachep->gfpflags & GFP_DMA);
+ }
}
static void *slab_get_obj(struct kmem_cache *cachep, struct slab *slabp,
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