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authorZou Nan hai <nanhai.zou@intel.com>2007-06-01 00:46:28 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-01 08:18:27 -0700
commit2e1c49db4c640b35df13889b86b9d62215ade4b6 (patch)
tree8b886843a57f5ff683700a9f623294e3f24d07ef /include/linux/bootmem.h
parentfa0aa866c82e441787e07169cb4925e3b673e891 (diff)
downloadlinux-next-2e1c49db4c640b35df13889b86b9d62215ade4b6.tar.gz
x86_64: allocate sparsemem memmap above 4G
On systems with huge amount of physical memory, VFS cache and memory memmap may eat all available system memory under 4G, then the system may fail to allocate swiotlb bounce buffer. There was a fix for this issue in arch/x86_64/mm/numa.c, but that fix dose not cover sparsemem model. This patch add fix to sparsemem model by first try to allocate memmap above 4G. Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/bootmem.h')
-rw-r--r--include/linux/bootmem.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 0365ec9fc0c9..c83534ee1e79 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -59,6 +59,7 @@ extern void *__alloc_bootmem_core(struct bootmem_data *bdata,
unsigned long align,
unsigned long goal,
unsigned long limit);
+extern void *alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size);
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
extern void reserve_bootmem(unsigned long addr, unsigned long size);