We can avoid unneeded WRITE_ONCE() overhead by using LIST_HEAD() to define
a list head.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/hugetlb.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 24f580ddf130..b3e6592247a3 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -459,14 +459,12 @@ static int allocate_file_region_entries(struct resv_map *resv,
int regions_needed)
__must_hold(&resv->lock)
{
- struct list_head allocated_regions;
+ LIST_HEAD(allocated_regions);
int to_allocate = 0, i = 0;
struct file_region *trg = NULL, *rg = NULL;
VM_BUG_ON(regions_needed < 0);
- INIT_LIST_HEAD(&allocated_regions);
-
/*
* Check for sufficient descriptors in the cache to accommodate
* the number of in progress add operations plus regions_needed.
@@ -2352,7 +2350,7 @@ struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
static int gather_surplus_pages(struct hstate *h, long delta)
__must_hold(&hugetlb_lock)
{
- struct list_head surplus_list;
+ LIST_HEAD(surplus_list);
struct page *page, *tmp;
int ret;
long i;
@@ -2367,7 +2365,6 @@ static int gather_surplus_pages(struct hstate *h, long delta)
}
allocated = 0;
- INIT_LIST_HEAD(&surplus_list);
ret = -ENOMEM;
retry:
--
2.23.0
