1 Index: linux-2.4.21-chaos/include/linux/mm.h
2 ===================================================================
3 --- linux-2.4.21-chaos.orig/include/linux/mm.h 2003-12-12 13:36:59.000000000 +0300
4 +++ linux-2.4.21-chaos/include/linux/mm.h 2003-12-12 16:15:57.000000000 +0300
6 #define __GFP_HIGHIO 0x80 /* Can start high mem physical IO? */
7 #define __GFP_FS 0x100 /* Can call down to low-level FS? */
8 #define __GFP_WIRED 0x200 /* Highmem bias and wired */
9 +#define __GFP_MEMALLOC 0x400 /* 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-2.4.21-chaos/include/linux/slab.h
22 ===================================================================
23 --- linux-2.4.21-chaos.orig/include/linux/slab.h 2003-12-05 16:54:33.000000000 +0300
24 +++ linux-2.4.21-chaos/include/linux/slab.h 2003-12-12 16:15:57.000000000 +0300
26 #define SLAB_KERNEL GFP_KERNEL
27 #define SLAB_NFS GFP_NFS
28 #define SLAB_DMA GFP_DMA
29 +#define SLAB_MEMALLOC GFP_MEMALLOC
31 #define SLAB_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_HIGHIO|__GFP_FS)
32 #define SLAB_NO_GROW 0x00001000UL /* don't grow a cache */
33 Index: linux-2.4.21-chaos/mm/page_alloc.c
34 ===================================================================
35 --- linux-2.4.21-chaos.orig/mm/page_alloc.c 2003-12-12 11:31:08.000000000 +0300
36 +++ linux-2.4.21-chaos/mm/page_alloc.c 2003-12-12 16:15:57.000000000 +0300
39 * Oh well, we didn't succeed.
41 - if (!(current->flags & (PF_MEMALLOC|PF_MEMDIE))) {
42 + if (!(current->flags & (PF_MEMALLOC|PF_MEMDIE)) &&
43 + !(gfp_mask & __GFP_MEMALLOC)) {
45 * Are we dealing with a higher order allocation?
49 /* XXX: is pages_min/4 a good amount to reserve for this? */
50 min += z->pages_min / 4;
51 - if (z->free_pages > min || ((current->flags & PF_MEMALLOC) && !in_interrupt())) {
52 + if (z->free_pages > min ||
53 + (((current->flags & PF_MEMALLOC) || (gfp_mask & __GFP_MEMALLOC))
54 + && !in_interrupt())) {
55 page = rmqueue(z, order);
58 Index: linux-2.4.21-chaos/mm/slab.c
59 ===================================================================
60 --- linux-2.4.21-chaos.orig/mm/slab.c 2003-12-05 07:55:51.000000000 +0300
61 +++ linux-2.4.21-chaos/mm/slab.c 2003-12-12 16:15:57.000000000 +0300
63 /* Be lazy and only check for valid flags here,
64 * keeping it out of the critical path in kmem_cache_alloc().
66 - if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW))
67 + if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW|SLAB_MEMALLOC))
69 if (flags & SLAB_NO_GROW)