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Subject[PATCH] sparsemem: on no vmemmap path put mem_map on node high too

we need to put mem_map high when virtual memmap is not used.

before this patch
free mem pfn range on first node:
[ 0.000000] 19 - 1f
[ 0.000000] 28 40 - 80 95
[ 0.000000] 702 740 - 1000 1000
[ 0.000000] 347c - 347e
[ 0.000000] 34e7 3500 - 3b80 3b8b
[ 0.000000] 73b8b 73bc0 - 73c00 73c00
[ 0.000000] 73ddd - 73e00
[ 0.000000] 73fdd - 74000
[ 0.000000] 741dd - 74200
[ 0.000000] 743dd - 74400
[ 0.000000] 745dd - 74600
[ 0.000000] 747dd - 74800
[ 0.000000] 749dd - 74a00
[ 0.000000] 74bdd - 74c00
[ 0.000000] 74ddd - 74e00
[ 0.000000] 74fdd - 75000
[ 0.000000] 751dd - 75200
[ 0.000000] 753dd - 75400
[ 0.000000] 755dd - 75600
[ 0.000000] 757dd - 75800
[ 0.000000] 759dd - 75a00
[ 0.000000] 79bdd 79c00 - 7d540 7d550
[ 0.000000] 7f745 - 7f750
[ 0.000000] 10000b 100040 - 2080000 2080000
so only 79c00 - 7d540 are major free block under 4g...

after this patch, we will get
[ 0.000000] 19 - 1f
[ 0.000000] 28 40 - 80 95
[ 0.000000] 702 740 - 1000 1000
[ 0.000000] 347c - 347e
[ 0.000000] 34e7 3500 - 3600 3600
[ 0.000000] 37dd - 3800
[ 0.000000] 39dd - 3a00
[ 0.000000] 3bdd - 3c00
[ 0.000000] 3ddd - 3e00
[ 0.000000] 3fdd - 4000
[ 0.000000] 41dd - 4200
[ 0.000000] 43dd - 4400
[ 0.000000] 45dd - 4600
[ 0.000000] 47dd - 4800
[ 0.000000] 49dd - 4a00
[ 0.000000] 4bdd - 4c00
[ 0.000000] 4ddd - 4e00
[ 0.000000] 4fdd - 5000
[ 0.000000] 51dd - 5200
[ 0.000000] 53dd - 5400
[ 0.000000] 95dd 9600 - 7d540 7d550
[ 0.000000] 7f745 - 7f750
[ 0.000000] 17000b 170040 - 2080000 2080000
we will have 9600 - 7d540 for major free block...

sparse-vmemmap path already used __alloc_bootmem_node_high()

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
mm/sparse.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

Index: linux-2.6/mm/sparse.c
===================================================================
--- linux-2.6.orig/mm/sparse.c
+++ linux-2.6/mm/sparse.c
@@ -381,13 +381,15 @@ static void __init sparse_early_usemaps_
struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid)
{
struct page *map;
+ unsigned long size;

map = alloc_remap(nid, sizeof(struct page) * PAGES_PER_SECTION);
if (map)
return map;

- map = alloc_bootmem_pages_node(NODE_DATA(nid),
- PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION));
+ size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION);
+ map = __alloc_bootmem_node_high(NODE_DATA(nid), size,
+ PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
return map;
}
void __init sparse_mem_maps_populate_node(struct page **map_map,
@@ -411,7 +413,8 @@ void __init sparse_mem_maps_populate_nod
}

size = PAGE_ALIGN(size);
- map = alloc_bootmem_pages_node(NODE_DATA(nodeid), size * map_count);
+ map = __alloc_bootmem_node_high(NODE_DATA(nodeid), size * map_count,
+ PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
if (map) {
for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
if (!present_section_nr(pnum))

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