1 Index: linux-2.4.20/include/linux/mm.h
2 ===================================================================
3 --- linux-2.4.20.orig/include/linux/mm.h 2003-12-01 17:07:14.000000000 +0300
4 +++ linux-2.4.20/include/linux/mm.h 2003-12-02 23:17:06.000000000 +0300
6 #define __GFP_IO 0x40 /* Can start low memory physical IO? */
7 #define __GFP_HIGHIO 0x80 /* Can start high mem physical IO? */
8 #define __GFP_FS 0x100 /* Can call down to low-level FS? */
9 +#define __GFP_MEMALLOC 0x200 /* like PF_MEMALLOC: see __alloc_pages */
11 #define GFP_NOHIGHIO (__GFP_HIGH | __GFP_WAIT | __GFP_IO)
12 #define GFP_NOIO (__GFP_HIGH | __GFP_WAIT)
14 #define GFP_KERNEL (__GFP_HIGH | __GFP_WAIT | __GFP_IO | __GFP_HIGHIO | __GFP_FS)
15 #define GFP_NFS (__GFP_HIGH | __GFP_WAIT | __GFP_IO | __GFP_HIGHIO | __GFP_FS)
16 #define GFP_KSWAPD ( __GFP_WAIT | __GFP_IO | __GFP_HIGHIO | __GFP_FS)
17 +#define GFP_MEMALLOC __GFP_MEMALLOC
19 /* Flag - indicates that the buffer will be suitable for DMA. Ignored on some
20 platforms, used as appropriate on others */
21 Index: linux-2.4.20/mm/page_alloc.c
22 ===================================================================
23 --- linux-2.4.20.orig/mm/page_alloc.c 2003-12-01 17:02:43.000000000 +0300
24 +++ linux-2.4.20/mm/page_alloc.c 2003-12-02 23:21:56.000000000 +0300
26 /* here we're in the low on memory slow path */
29 - if (current->flags & (PF_MEMALLOC | PF_MEMDIE)) {
30 + if (current->flags & (PF_MEMALLOC | PF_MEMDIE) ||
31 + (gfp_mask & __GFP_MEMALLOC)) {
32 zone = zonelist->zones;
34 zone_t *z = *(zone++);
35 Index: linux-2.4.20/include/linux/slab.h
36 ===================================================================
37 --- linux-2.4.20.orig/include/linux/slab.h 2003-12-01 17:07:14.000000000 +0300
38 +++ linux-2.4.20/include/linux/slab.h 2003-12-02 23:17:06.000000000 +0300
40 #define SLAB_KERNEL GFP_KERNEL
41 #define SLAB_NFS GFP_NFS
42 #define SLAB_DMA GFP_DMA
43 +#define SLAB_MEMALLOC GFP_MEMALLOC
45 #define SLAB_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_HIGHIO|__GFP_FS)
46 #define SLAB_NO_GROW 0x00001000UL /* don't grow a cache */
47 Index: linux-2.4.20/mm/slab.c
48 ===================================================================
49 --- linux-2.4.20.orig/mm/slab.c 2003-12-01 17:02:34.000000000 +0300
50 +++ linux-2.4.20/mm/slab.c 2003-12-02 23:17:06.000000000 +0300
52 /* Be lazy and only check for valid flags here,
53 * keeping it out of the critical path in kmem_cache_alloc().
55 - if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW))
56 + if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW|SLAB_MEMALLOC))
58 if (flags & SLAB_NO_GROW)