The patch titled
Hugepages: Use page_to_nid rather than traversing zone pointers
has been removed from the -mm tree. Its filename is
hugepages-use-page_to_nid-rather-than-traversing-zone-pointers.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Hugepages: Use page_to_nid rather than traversing zone pointers
From: Christoph Lameter <clameter@xxxxxxx>
I found two location in hugetlb.c where we chase pointer instead of using
page_to_nid(). Page_to_nid is more effective and can get the node directly
from page flags.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/hugetlb.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN mm/hugetlb.c~hugepages-use-page_to_nid-rather-than-traversing-zone-pointers mm/hugetlb.c
--- a/mm/hugetlb.c~hugepages-use-page_to_nid-rather-than-traversing-zone-pointers
+++ a/mm/hugetlb.c
@@ -177,7 +177,7 @@ static void update_and_free_page(struct
{
int i;
nr_huge_pages--;
- nr_huge_pages_node[page_zone(page)->zone_pgdat->node_id]--;
+ nr_huge_pages_node[page_to_nid(page)]--;
for (i = 0; i < (HPAGE_SIZE / PAGE_SIZE); i++) {
page[i].flags &= ~(1 << PG_locked | 1 << PG_error | 1 << PG_referenced |
1 << PG_dirty | 1 << PG_active | 1 << PG_reserved |
@@ -191,7 +191,8 @@ static void update_and_free_page(struct
#ifdef CONFIG_HIGHMEM
static void try_to_free_low(unsigned long count)
{
- int i, nid;
+ int i;
+
for (i = 0; i < MAX_NUMNODES; ++i) {
struct page *page, *next;
list_for_each_entry_safe(page, next, &hugepage_freelists[i], lru) {
@@ -199,9 +200,8 @@ static void try_to_free_low(unsigned lon
continue;
list_del(&page->lru);
update_and_free_page(page);
- nid = page_zone(page)->zone_pgdat->node_id;
free_huge_pages--;
- free_huge_pages_node[nid]--;
+ free_huge_pages_node[page_to_nid(page)]--;
if (count >= nr_huge_pages)
return;
}
_
Patches currently in -mm which might be from clameter@xxxxxxx are
origin.patch
git-ia64.patch
slab-fix-kmalloc_node-applying-memory-policies-if-nodeid-==-numa_node_id.patch
add-numa_build-definition-in-kernelh-to-avoid-ifdef.patch
disable-gfp_thisnode-in-the-non-numa-case.patch
gfp_thisnode-for-the-slab-allocator-v2.patch
gfp_thisnode-for-the-slab-allocator-v2-fix-3.patch
add-node-to-zone-for-the-numa-case.patch
add-node-to-zone-for-the-numa-case-fix.patch
get-rid-of-zone_table.patch
get-rid-of-zone_table-fix.patch
do-not-allocate-pagesets-for-unpopulated-zones.patch
zone_statistics-use-hot-node-instead-of-cold-zone_pgdat.patch
deal-with-cases-of-zone_dma-meaning-the-first-zone.patch
introduce-config_zone_dma.patch
optional-zone_dma-in-the-vm.patch
optional-zone_dma-for-i386.patch
optional-zone_dma-for-x86_64.patch
optional-zone_dma-for-ia64.patch
remove-zone_dma-remains-from-parisc.patch
remove-zone_dma-remains-from-sh-sh64.patch
radix-tree-rcu-lockless-readside.patch
scheduler-numa-aware-placement-of-sched_group_allnodes.patch
zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable-swap_prefetch.patch
reduce-max_nr_zones-swap_prefetch-remove-incorrect-use-of-zone_highmem.patch
numa-add-zone_to_nid-function-swap_prefetch.patch
readahead-state-based-method-aging-accounting-apply-type-enum-zone_type-readahead.patch
-
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