diff options
| -rw-r--r-- | include/linux/gfp.h | 20 | ||||
| -rw-r--r-- | mm/slab.c | 8 | ||||
| -rw-r--r-- | mm/slub.c | 5 | ||||
| -rw-r--r-- | mm/vmalloc.c | 5 |
4 files changed, 23 insertions, 15 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 12a90a191c1..da8aa872eb6 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -53,13 +53,6 @@ struct vm_area_struct; #define __GFP_BITS_SHIFT 20 /* Room for 20 __GFP_FOO bits */ #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) -/* if you forget to add the bitmask here kernel will crash, period */ -#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \ - __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \ - __GFP_NOFAIL|__GFP_NORETRY|__GFP_COMP| \ - __GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE| \ - __GFP_MOVABLE) - /* This equals 0, but use constants in case they ever change */ #define GFP_NOWAIT (GFP_ATOMIC & ~__GFP_HIGH) /* GFP_ATOMIC means both !wait (__GFP_WAIT not set) and use emergency pool */ @@ -86,6 +79,19 @@ struct vm_area_struct; #define GFP_THISNODE ((__force gfp_t)0) #endif +/* This mask makes up all the page movable related flags */ +#define GFP_MOVABLE_MASK (__GFP_MOVABLE) + +/* Control page allocator reclaim behavior */ +#define GFP_RECLAIM_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS|\ + __GFP_NOWARN|__GFP_REPEAT|__GFP_NOFAIL|\ + __GFP_NORETRY|__GFP_NOMEMALLOC) + +/* Control allocation constraints */ +#define GFP_CONSTRAINT_MASK (__GFP_HARDWALL|__GFP_THISNODE) + +/* Do not use these with a slab allocator */ +#define GFP_SLAB_BUG_MASK (__GFP_DMA32|__GFP_HIGHMEM|~__GFP_BITS_MASK) /* Flag - indicates that the buffer will be suitable for DMA. Ignored on some platforms, used as appropriate on others */ diff --git a/mm/slab.c b/mm/slab.c index 368a47d80ea..8fb56ae685d 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2746,9 +2746,9 @@ static int cache_grow(struct kmem_cache *cachep, * Be lazy and only check for valid flags here, keeping it out of the * critical path in kmem_cache_alloc(). */ - BUG_ON(flags & ~(GFP_DMA | __GFP_ZERO | GFP_LEVEL_MASK)); + BUG_ON(flags & GFP_SLAB_BUG_MASK); + local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK); - local_flags = (flags & GFP_LEVEL_MASK); /* Take the l3 list lock to change the colour_next on this node */ check_irq_off(); l3 = cachep->nodelists[nodeid]; @@ -2785,7 +2785,7 @@ static int cache_grow(struct kmem_cache *cachep, /* Get slab management. */ slabp = alloc_slabmgmt(cachep, objp, offset, - local_flags & ~GFP_THISNODE, nodeid); + local_flags & ~GFP_CONSTRAINT_MASK, nodeid); if (!slabp) goto opps1; @@ -3225,7 +3225,7 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags) zonelist = &NODE_DATA(slab_node(current->mempolicy)) ->node_zonelists[gfp_zone(flags)]; - local_flags = (flags & GFP_LEVEL_MASK); + local_flags = flags & (GFP_CONSTRAINT_MASK|GFP_RECLAIM_MASK); retry: /* diff --git a/mm/slub.c b/mm/slub.c index 968ce3776e0..19d3202ca2d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1088,12 +1088,13 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) void *last; void *p; - BUG_ON(flags & ~(GFP_DMA | __GFP_ZERO | GFP_LEVEL_MASK)); + BUG_ON(flags & GFP_SLAB_BUG_MASK); if (flags & __GFP_WAIT) local_irq_enable(); - page = allocate_slab(s, flags & GFP_LEVEL_MASK, node); + page = allocate_slab(s, + flags & (GFP_RECLAIM_MASK | GFP_CONSTRAINT_MASK), node); if (!page) goto out; diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 3cee76a8c9f..2e01af36584 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -190,7 +190,8 @@ static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long fl if (unlikely(!size)) return NULL; - area = kmalloc_node(sizeof(*area), gfp_mask & GFP_LEVEL_MASK, node); + area = kmalloc_node(sizeof(*area), gfp_mask & GFP_RECLAIM_MASK, node); + if (unlikely(!area)) return NULL; @@ -439,7 +440,7 @@ void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, area->flags |= VM_VPAGES; } else { pages = kmalloc_node(array_size, - (gfp_mask & GFP_LEVEL_MASK) | __GFP_ZERO, + (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO, node); } area->pages = pages; |