From 6c037149014027d50175da5be4ae4531374dcbe0 Mon Sep 17 00:00:00 2001
From: Mike Kravetz <mike.kravetz@oracle.com>
Date: Wed, 24 Feb 2021 12:09:04 -0800
Subject: hugetlb: convert PageHugeFreed to HPageFreed flag

Use new hugetlb specific HPageFreed flag to replace the PageHugeFreed
interfaces.

Link: https://lkml.kernel.org/r/20210122195231.324857-6-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/hugetlb.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)

(limited to 'mm')

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4d7d4535a313..5377e1dad044 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -79,21 +79,6 @@ DEFINE_SPINLOCK(hugetlb_lock);
 static int num_fault_mutexes;
 struct mutex *hugetlb_fault_mutex_table ____cacheline_aligned_in_smp;
 
-static inline bool PageHugeFreed(struct page *head)
-{
-	return page_private(head + 4) == -1UL;
-}
-
-static inline void SetPageHugeFreed(struct page *head)
-{
-	set_page_private(head + 4, -1UL);
-}
-
-static inline void ClearPageHugeFreed(struct page *head)
-{
-	set_page_private(head + 4, 0);
-}
-
 /* Forward declaration */
 static int hugetlb_acct_memory(struct hstate *h, long delta);
 
@@ -1053,7 +1038,7 @@ static void enqueue_huge_page(struct hstate *h, struct page *page)
 	list_move(&page->lru, &h->hugepage_freelists[nid]);
 	h->free_huge_pages++;
 	h->free_huge_pages_node[nid]++;
-	SetPageHugeFreed(page);
+	SetHPageFreed(page);
 }
 
 static struct page *dequeue_huge_page_node_exact(struct hstate *h, int nid)
@@ -1070,7 +1055,7 @@ static struct page *dequeue_huge_page_node_exact(struct hstate *h, int nid)
 
 		list_move(&page->lru, &h->hugepage_activelist);
 		set_page_refcounted(page);
-		ClearPageHugeFreed(page);
+		ClearHPageFreed(page);
 		h->free_huge_pages--;
 		h->free_huge_pages_node[nid]--;
 		return page;
@@ -1485,7 +1470,7 @@ static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
 	spin_lock(&hugetlb_lock);
 	h->nr_huge_pages++;
 	h->nr_huge_pages_node[nid]++;
-	ClearPageHugeFreed(page);
+	ClearHPageFreed(page);
 	spin_unlock(&hugetlb_lock);
 }
 
@@ -1756,7 +1741,7 @@ retry:
 		 * We should make sure that the page is already on the free list
 		 * when it is dissolved.
 		 */
-		if (unlikely(!PageHugeFreed(head))) {
+		if (unlikely(!HPageFreed(head))) {
 			spin_unlock(&hugetlb_lock);
 			cond_resched();
 
-- 
cgit v1.2.3-70-g09d2