1 Index: linux-2.4.18-chaos/include/linux/mm.h
2 ===================================================================
3 --- linux-2.4.18-chaos.orig/include/linux/mm.h 2003-11-23 00:07:20.000000000 +0300
4 +++ linux-2.4.18-chaos/include/linux/mm.h 2003-11-23 00:07:23.000000000 +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-2.4.18-chaos/mm/page_alloc.c
22 ===================================================================
23 --- linux-2.4.18-chaos.orig/mm/page_alloc.c 2003-11-23 00:07:20.000000000 +0300
24 +++ linux-2.4.18-chaos/mm/page_alloc.c 2003-12-02 23:12:31.000000000 +0300
27 * Oh well, we didn't succeed.
29 - if (!(current->flags & PF_MEMALLOC)) {
30 + if (!(current->flags & PF_MEMALLOC) && !(gfp_mask & __GFP_MEMALLOC)) {
32 * Are we dealing with a higher order allocation?
36 /* XXX: is pages_min/4 a good amount to reserve for this? */
37 min += z->pages_min / 4;
38 - if (z->free_pages > min || ((current->flags & PF_MEMALLOC) && !in_interrupt())) {
39 + if (z->free_pages > min ||
40 + (((current->flags & PF_MEMALLOC) || (gfp_mask & __GFP_MEMALLOC))
41 + && !in_interrupt())) {
42 page = rmqueue(z, order);
45 Index: linux-2.4.18-chaos/include/linux/slab.h
46 ===================================================================
47 --- linux-2.4.18-chaos.orig/include/linux/slab.h 2003-07-28 17:52:18.000000000 +0400
48 +++ linux-2.4.18-chaos/include/linux/slab.h 2003-11-23 00:07:23.000000000 +0300
50 #define SLAB_KERNEL GFP_KERNEL
51 #define SLAB_NFS GFP_NFS
52 #define SLAB_DMA GFP_DMA
53 +#define SLAB_MEMALLOC GFP_MEMALLOC
55 #define SLAB_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_HIGHIO|__GFP_FS)
56 #define SLAB_NO_GROW 0x00001000UL /* don't grow a cache */
57 Index: linux-2.4.18-chaos/mm/slab.c
58 ===================================================================
59 --- linux-2.4.18-chaos.orig/mm/slab.c 2003-07-28 17:52:20.000000000 +0400
60 +++ linux-2.4.18-chaos/mm/slab.c 2003-11-23 00:07:23.000000000 +0300
62 /* Be lazy and only check for valid flags here,
63 * keeping it out of the critical path in kmem_cache_alloc().
65 - if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW))
66 + if (flags & ~(SLAB_DMA|SLAB_LEVEL_MASK|SLAB_NO_GROW|SLAB_MEMALLOC))
68 if (flags & SLAB_NO_GROW)