[PATCH mm-unstable v5 06/10] mm/hugetlb: convert add_hugetlb_page() to folios and add hugetlb_cma_folio()

Sidhartha Kumar
2022-11-29T22:51:31Z

Convert add_hugetlb_page() to take in a folio, also convert
hugetlb_cma_page() to take in a folio.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
---
mm/hugetlb.c | 42 +++++++++++++++++++++---------------------
1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 83777d1ccbf3..57909a0e7157 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -54,13 +54,13 @@ struct hstate hstates[HUGE_MAX_HSTATE];
#ifdef CONFIG_CMA
static struct cma *hugetlb_cma[MAX_NUMNODES];
static unsigned long hugetlb_cma_size_in_node[MAX_NUMNODES] __initdata;
-static bool hugetlb_cma_page(struct page *page, unsigned int order)
+static bool hugetlb_cma_folio(struct folio *folio, unsigned int order)
{
- return cma_pages_valid(hugetlb_cma[page_to_nid(page)], page,
+ return cma_pages_valid(hugetlb_cma[folio_nid(folio)], &folio->page,
1 << order);
}
#else
-static bool hugetlb_cma_page(struct page *page, unsigned int order)
+static bool hugetlb_cma_folio(struct folio *folio, unsigned int order)
{
return false;
}
@@ -1506,17 +1506,17 @@ static void remove_hugetlb_folio_for_demote(struct hstate *h, struct folio *foli
__remove_hugetlb_folio(h, folio, adjust_surplus, true);
}

-static void add_hugetlb_page(struct hstate *h, struct page *page,
+static void add_hugetlb_folio(struct hstate *h, struct folio *folio,
bool adjust_surplus)
{
int zeroed;
- int nid = page_to_nid(page);
+ int nid = folio_nid(folio);

- VM_BUG_ON_PAGE(!HPageVmemmapOptimized(page), page);
+ VM_BUG_ON_FOLIO(!folio_test_hugetlb_vmemmap_optimized(folio), folio);

lockdep_assert_held(&hugetlb_lock);

- INIT_LIST_HEAD(&page->lru);
+ INIT_LIST_HEAD(&folio->lru);
h->nr_huge_pages++;
h->nr_huge_pages_node[nid]++;

@@ -1525,21 +1525,21 @@ static void add_hugetlb_page(struct hstate *h, struct page *page,
h->surplus_huge_pages_node[nid]++;
}

- set_compound_page_dtor(page, HUGETLB_PAGE_DTOR);
- set_page_private(page, 0);
+ folio_set_compound_dtor(folio, HUGETLB_PAGE_DTOR);
+ folio_change_private(folio, NULL);
/*
- * We have to set HPageVmemmapOptimized again as above
- * set_page_private(page, 0) cleared it.
+ * We have to set hugetlb_vmemmap_optimized again as above
+ * folio_change_private(folio, NULL) cleared it.
*/
- SetHPageVmemmapOptimized(page);
+ folio_set_hugetlb_vmemmap_optimized(folio);

/*
- * This page is about to be managed by the hugetlb allocator and
+ * This folio is about to be managed by the hugetlb allocator and
* should have no users. Drop our reference, and check for others
* just in case.
*/
- zeroed = put_page_testzero(page);
- if (!zeroed)
+ zeroed = folio_put_testzero(folio);
+ if (unlikely(!zeroed))
/*
* It is VERY unlikely soneone else has taken a ref on
* the page. In this case, we simply return as the
@@ -1548,8 +1548,8 @@ static void add_hugetlb_page(struct hstate *h, struct page *page,
*/
return;

- arch_clear_hugepage_flags(page);
- enqueue_huge_page(h, page);
+ arch_clear_hugepage_flags(&folio->page);
+ enqueue_huge_page(h, &folio->page);
}

static void __update_and_free_page(struct hstate *h, struct page *page)
@@ -1575,7 +1575,7 @@ static void __update_and_free_page(struct hstate *h, struct page *page)
* page and put the page back on the hugetlb free list and treat
* as a surplus page.
*/
- add_hugetlb_page(h, page, true);
+ add_hugetlb_folio(h, page_folio(page), true);
spin_unlock_irq(&hugetlb_lock);
return;
}
@@ -1600,7 +1600,7 @@ static void __update_and_free_page(struct hstate *h, struct page *page)
* need to be given back to CMA in free_gigantic_page.
*/
if (hstate_is_gigantic(h) ||
- hugetlb_cma_page(page, huge_page_order(h))) {
+ hugetlb_cma_folio(folio, huge_page_order(h))) {
destroy_compound_gigantic_folio(folio, huge_page_order(h));
free_gigantic_page(page, huge_page_order(h));
} else {
@@ -2186,7 +2186,7 @@ int dissolve_free_huge_page(struct page *page)
update_and_free_hugetlb_folio(h, folio, false);
} else {
spin_lock_irq(&hugetlb_lock);
- add_hugetlb_page(h, &folio->page, false);
+ add_hugetlb_folio(h, folio, false);
h->max_huge_pages++;
spin_unlock_irq(&hugetlb_lock);
}
@@ -3453,7 +3453,7 @@ static int demote_free_huge_page(struct hstate *h, struct page *page)
/* Allocation of vmemmmap failed, we can not demote page */
spin_lock_irq(&hugetlb_lock);
set_page_refcounted(page);
- add_hugetlb_page(h, page, false);
+ add_hugetlb_folio(h, page_folio(page), false);
return rc;
}

--
2.38.1