linux-kernel - [PATCH 8/9] mm/hugeltb_cgroup: convert hugetlb_cgroup_commit

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Date:   Thu, 13 Oct 2022 20:13:02 -0700
From:   Sidhartha Kumar <sidhartha.kumar@...cle.com>
To:     linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     akpm@...ux-foundation.org, songmuchun@...edance.com,
        mike.kravetz@...cle.com, willy@...radead.org,
        almasrymina@...gle.com, linmiaohe@...wei.com,
        minhquangbui99@...il.com, aneesh.kumar@...ux.ibm.com,
        Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH 8/9] mm/hugeltb_cgroup: convert hugetlb_cgroup_commit_charge*() to folios

Convert hugetlb_cgroup_commit_charge*() to internally use folios to clean
up the code after __set_hugetlb_cgroup() was changed to take a folio.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
 mm/hugetlb_cgroup.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 7793401acc12..69939c233f4f 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -313,21 +313,21 @@ int hugetlb_cgroup_charge_cgroup_rsvd(int idx, unsigned long nr_pages,
 /* Should be called with hugetlb_lock held */
 static void __hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
 					   struct hugetlb_cgroup *h_cg,
-					   struct page *page, bool rsvd)
+					   struct folio *folio, bool rsvd)
 {
 	if (hugetlb_cgroup_disabled() || !h_cg)
 		return;
 
-	__set_hugetlb_cgroup(page_folio(page), h_cg, rsvd);
+	__set_hugetlb_cgroup(folio, h_cg, rsvd);
 	if (!rsvd) {
 		unsigned long usage =
-			h_cg->nodeinfo[page_to_nid(page)]->usage[idx];
+			h_cg->nodeinfo[folio_nid(folio)]->usage[idx];
 		/*
 		 * This write is not atomic due to fetching usage and writing
 		 * to it, but that's fine because we call this with
 		 * hugetlb_lock held anyway.
 		 */
-		WRITE_ONCE(h_cg->nodeinfo[page_to_nid(page)]->usage[idx],
+		WRITE_ONCE(h_cg->nodeinfo[folio_nid(folio)]->usage[idx],
 			   usage + nr_pages);
 	}
 }
@@ -336,14 +336,18 @@ void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
 				  struct hugetlb_cgroup *h_cg,
 				  struct page *page)
 {
-	__hugetlb_cgroup_commit_charge(idx, nr_pages, h_cg, page, false);
+	struct folio *folio = page_folio(page);
+
+	__hugetlb_cgroup_commit_charge(idx, nr_pages, h_cg, folio, false);
 }
 
 void hugetlb_cgroup_commit_charge_rsvd(int idx, unsigned long nr_pages,
 				       struct hugetlb_cgroup *h_cg,
 				       struct page *page)
 {
-	__hugetlb_cgroup_commit_charge(idx, nr_pages, h_cg, page, true);
+	struct folio *folio = page_folio(page);
+
+	__hugetlb_cgroup_commit_charge(idx, nr_pages, h_cg, folio, true);
 }
 
 /*
-- 
2.31.1