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hugetlb: use LIST_HEAD() to define a list head 

Use LIST_HEAD() directly to define a list head to simplify the code.
No functional change intended.

Link: https://lkml.kernel.org/r/20220901120030.63318-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-09-01 20:00:23 +08:00 committed by Andrew Morton
parent c2c3a60a85
commit 3466534131
1 changed files with 2 additions and 5 deletions
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7
mm/hugetlb.c
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@ -456,14 +456,12 @@ static int allocate_file_region_entries(struct resv_map *resv,
int regions_needed) int regions_needed)
__must_hold(&resv->lock) __must_hold(&resv->lock)
{ {
struct list_head allocated_regions; LIST_HEAD(allocated_regions);
int to_allocate = 0, i = 0; int to_allocate = 0, i = 0;
struct file_region *trg = NULL, *rg = NULL; struct file_region *trg = NULL, *rg = NULL;
VM_BUG_ON(regions_needed < 0); VM_BUG_ON(regions_needed < 0);
INIT_LIST_HEAD(&allocated_regions);
/* /*
* Check for sufficient descriptors in the cache to accommodate * Check for sufficient descriptors in the cache to accommodate
* the number of in progress add operations plus regions_needed. * the number of in progress add operations plus regions_needed.
@ -2336,7 +2334,7 @@ struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
static int gather_surplus_pages(struct hstate *h, long delta) static int gather_surplus_pages(struct hstate *h, long delta)
__must_hold(&hugetlb_lock) __must_hold(&hugetlb_lock)
{ {
struct list_head surplus_list; LIST_HEAD(surplus_list);
struct page *page, *tmp; struct page *page, *tmp;
int ret; int ret;
long i; long i;
@ -2351,7 +2349,6 @@ static int gather_surplus_pages(struct hstate *h, long delta)
} }
allocated = 0; allocated = 0;
INIT_LIST_HEAD(&surplus_list);
ret = -ENOMEM; ret = -ENOMEM;
retry: retry: