diff options
author | Mel Gorman <mel@csn.ul.ie> | 2008-04-28 05:12:16 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 11:58:18 -0400 |
commit | 54a6eb5c4765aa573a030ceeba2c14e3d2ea5706 (patch) | |
tree | 547176a090beb787722a153cf2b8b942dc0e68db /mm/hugetlb.c | |
parent | 18ea7e710d2452fa726814a406779188028cf1bf (diff) |
mm: use two zonelist that are filtered by GFP mask
Currently a node has two sets of zonelists, one for each zone type in the
system and a second set for GFP_THISNODE allocations. Based on the zones
allowed by a gfp mask, one of these zonelists is selected. All of these
zonelists consume memory and occupy cache lines.
This patch replaces the multiple zonelists per-node with two zonelists. The
first contains all populated zones in the system, ordered by distance, for
fallback allocations when the target/preferred node has no free pages. The
second contains all populated zones in the node suitable for GFP_THISNODE
allocations.
An iterator macro is introduced called for_each_zone_zonelist() that interates
through each zone allowed by the GFP flags in the selected zonelist.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r-- | mm/hugetlb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 51c9e2c0164..ddd141cad77 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c | |||
@@ -97,11 +97,11 @@ static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma, | |||
97 | struct mempolicy *mpol; | 97 | struct mempolicy *mpol; |
98 | struct zonelist *zonelist = huge_zonelist(vma, address, | 98 | struct zonelist *zonelist = huge_zonelist(vma, address, |
99 | htlb_alloc_mask, &mpol); | 99 | htlb_alloc_mask, &mpol); |
100 | struct zone **z; | 100 | struct zone *zone, **z; |
101 | 101 | ||
102 | for (z = zonelist->zones; *z; z++) { | 102 | for_each_zone_zonelist(zone, z, zonelist, MAX_NR_ZONES - 1) { |
103 | nid = zone_to_nid(*z); | 103 | nid = zone_to_nid(zone); |
104 | if (cpuset_zone_allowed_softwall(*z, htlb_alloc_mask) && | 104 | if (cpuset_zone_allowed_softwall(zone, htlb_alloc_mask) && |
105 | !list_empty(&hugepage_freelists[nid])) { | 105 | !list_empty(&hugepage_freelists[nid])) { |
106 | page = list_entry(hugepage_freelists[nid].next, | 106 | page = list_entry(hugepage_freelists[nid].next, |
107 | struct page, lru); | 107 | struct page, lru); |