alloc_huge_page() now mixes normal code path with error handle logic.
This patches move out the error handle logic, to make normal code
path more clean and redue code duplicate.
Signed-off-by: Jianyu Zhan <nasa4836@xxxxxxxxx>
---
mm/hugetlb.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 26b1464..e81c69e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1246,24 +1246,17 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
return ERR_PTR(-ENOSPC);
ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), &h_cg);
- if (ret) {
- if (chg || avoid_reserve)
- hugepage_subpool_put_pages(spool, 1);
- return ERR_PTR(-ENOSPC);
- }
+ if (ret)
+ goto out_subpool_put;
+
spin_lock(&hugetlb_lock);
page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve, chg);
if (!page) {
spin_unlock(&hugetlb_lock);
page = alloc_buddy_huge_page(h, NUMA_NO_NODE);
- if (!page) {
- hugetlb_cgroup_uncharge_cgroup(idx,
- pages_per_huge_page(h),
- h_cg);
- if (chg || avoid_reserve)
- hugepage_subpool_put_pages(spool, 1);
- return ERR_PTR(-ENOSPC);
- }
+ if (!page)
+ goto out_uncharge_cgroup;
+
spin_lock(&hugetlb_lock);
list_move(&page->lru, &h->hugepage_activelist);
/* Fall through */
@@ -1275,6 +1268,13 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
vma_commit_reservation(h, vma, addr);
return page;
+
+out_uncharge_cgroup:
+ hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg);
+out_subpool_put:
+ if (chg || avoid_reserve)
+ hugepage_subpool_put_pages(spool, 1);
+ return ERR_PTR(-ENOSPC);
}
/*
--
2.0.0-rc3
--
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