From: Mike Kravetz <mike.kravetz@oracle.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: Michal Hocko <mhocko@kernel.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Muchun Song <songmuchun@bytedance.com>,
David Hildenbrand <david@redhat.com>,
Oscar Salvador <osalvador@suse.de>,
Matthew Wilcox <willy@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Kravetz <mike.kravetz@oracle.com>
Subject: [PATCH 5/5] hugetlb: convert PageHugeFreed to HP_Freed flag
Date: Fri, 15 Jan 2021 16:31:05 -0800 [thread overview]
Message-ID: <20210116003105.182918-6-mike.kravetz@oracle.com> (raw)
In-Reply-To: <20210116003105.182918-1-mike.kravetz@oracle.com>
Use new hugetlb specific flag HP_Freed flag to replace the
PageHugeFreed interfaces.
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
---
include/linux/hugetlb.h | 2 ++
mm/hugetlb.c | 23 ++++-------------------
2 files changed, 6 insertions(+), 19 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 166825c85875..5c99969fbbd6 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -487,11 +487,13 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
* allocator. Typically used for migration target pages when no pages
* are available in the pool. The hugetlb free page path will
* immediately free pages with this flag set to the buddy allocator.
+ * HP_Freed - Set when page is on the free lists.
*/
enum hugetlb_page_flags {
HP_Restore_Reserve = 0,
HP_Migratable,
HP_Temporary,
+ HP_Freed,
};
#ifdef CONFIG_HUGETLB_PAGE
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 53e9168a97bd..073137b32657 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);
@@ -1043,7 +1028,7 @@ 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);
+ hugetlb_set_page_flag(page, HP_Freed);
}
static struct page *dequeue_huge_page_node_exact(struct hstate *h, int nid)
@@ -1060,7 +1045,7 @@ 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);
+ hugetlb_clear_page_flag(page, HP_Freed);
h->free_huge_pages--;
h->free_huge_pages_node[nid]--;
return page;
@@ -1474,7 +1459,7 @@ 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);
+ hugetlb_clear_page_flag(page, HP_Freed);
spin_unlock(&hugetlb_lock);
}
@@ -1747,7 +1732,7 @@ int dissolve_free_huge_page(struct page *page)
* We should make sure that the page is already on the free list
* when it is dissolved.
*/
- if (unlikely(!PageHugeFreed(head))) {
+ if (unlikely(!hugetlb_test_page_flag(head, HP_Freed))) {
rc = -EAGAIN;
goto out;
}
--
2.29.2
prev parent reply other threads:[~2021-01-16 0:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-16 0:31 [PATCH 0/5] create hugetlb flags to consolidate state Mike Kravetz
2021-01-16 0:31 ` [PATCH 1/5] hugetlb: use page.private for hugetlb specific page flags Mike Kravetz
2021-01-16 0:31 ` [PATCH 2/5] hugetlb: convert page_huge_active() to HP_Migratable flag Mike Kravetz
2021-01-16 4:24 ` Matthew Wilcox
2021-01-16 4:36 ` [External] " Muchun Song
2021-01-16 12:06 ` Oscar Salvador
2021-01-16 21:53 ` Mike Kravetz
2021-01-16 0:31 ` [PATCH 3/5] hugetlb: only set HP_Migratable for migratable hstates Mike Kravetz
2021-01-16 0:31 ` [PATCH 4/5] hugetlb: convert PageHugeTemporary() to HP_Temporary flag Mike Kravetz
2021-01-16 0:31 ` Mike Kravetz [this message]
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