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authorPaul Jackson <pj@sgi.com>2006-03-22 00:09:10 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-22 07:54:06 -0800
commitfdb7cc59084ba7eef935e4e40aaaf538ee34c625 (patch)
treed31bd847f2d9ea3f5b2a632c718b53797172af88
parent9b65ef59d42a56fa1358958ede77aaa5bac385a8 (diff)
downloadop-kernel-dev-fdb7cc59084ba7eef935e4e40aaaf538ee34c625.zip
op-kernel-dev-fdb7cc59084ba7eef935e4e40aaaf538ee34c625.tar.gz
[PATCH] mm: hugetlb alloc_fresh_huge_page bogus node loop fix
Fix bogus node loop in hugetlb.c alloc_fresh_huge_page(), which was assuming that nodes are numbered contiguously from 0 to num_online_nodes(). Once the hotplug folks get this far, that will be false. Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/hugetlb.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 06699d8..ebad6bb 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -105,7 +105,9 @@ static int alloc_fresh_huge_page(void)
struct page *page;
page = alloc_pages_node(nid, GFP_HIGHUSER|__GFP_COMP|__GFP_NOWARN,
HUGETLB_PAGE_ORDER);
- nid = (nid + 1) % num_online_nodes();
+ nid = next_node(nid, node_online_map);
+ if (nid == MAX_NUMNODES)
+ nid = first_node(node_online_map);
if (page) {
page[1].lru.next = (void *)free_huge_page; /* dtor */
spin_lock(&hugetlb_lock);
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