Messages in this thread Patch in this message | | | From | Joonsoo Kim <> | Subject | [PATCH v3 1/9] mm, hugetlb: move up the code which check availability of free huge page | Date | Mon, 29 Jul 2013 14:28:13 +0900 |
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In this time we are holding a hugetlb_lock, so hstate values can't be changed. If we don't have any usable free huge page in this time, we don't need to proceede the processing. So move this code up.
Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index e2bfbf7..fc4988c 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -539,10 +539,6 @@ static struct page *dequeue_huge_page_vma(struct hstate *h, struct zoneref *z; unsigned int cpuset_mems_cookie; -retry_cpuset: - cpuset_mems_cookie = get_mems_allowed(); - zonelist = huge_zonelist(vma, address, - htlb_alloc_mask, &mpol, &nodemask); /* * A child process with MAP_PRIVATE mappings created by their parent * have no page reserves. This check ensures that reservations are @@ -556,6 +552,11 @@ retry_cpuset: if (avoid_reserve && h->free_huge_pages - h->resv_huge_pages == 0) goto err; +retry_cpuset: + cpuset_mems_cookie = get_mems_allowed(); + zonelist = huge_zonelist(vma, address, + htlb_alloc_mask, &mpol, &nodemask); + for_each_zone_zonelist_nodemask(zone, z, zonelist, MAX_NR_ZONES - 1, nodemask) { if (cpuset_zone_allowed_softwall(zone, htlb_alloc_mask)) { @@ -574,7 +575,6 @@ retry_cpuset: return page; err: - mpol_cond_put(mpol); return NULL; } -- 1.7.9.5
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