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From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>,
	Matthew Wilcox <willy@infradead.org>,
	David Hildenbrand <david@redhat.com>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>, <ying.huang@intel.com>,
	Zi Yan <ziy@nvidia.com>, Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH -next 2/9] mm: mprotect: use a folio in change_pte_range()
Date: Tue, 26 Sep 2023 08:52:47 +0800	[thread overview]
Message-ID: <20230926005254.2861577-3-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20230926005254.2861577-1-wangkefeng.wang@huawei.com>

Use a folio in change_pte_range() to save three compound_head() calls.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
 mm/mprotect.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/mm/mprotect.c b/mm/mprotect.c
index b94fbb45d5c7..459daa987131 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -114,7 +114,7 @@ static long change_pte_range(struct mmu_gather *tlb,
 			 * pages. See similar comment in change_huge_pmd.
 			 */
 			if (prot_numa) {
-				struct page *page;
+				struct folio *folio;
 				int nid;
 				bool toptier;
 
@@ -122,13 +122,14 @@ static long change_pte_range(struct mmu_gather *tlb,
 				if (pte_protnone(oldpte))
 					continue;
 
-				page = vm_normal_page(vma, addr, oldpte);
-				if (!page || is_zone_device_page(page) || PageKsm(page))
+				folio = vm_normal_folio(vma, addr, oldpte);
+				if (!folio || folio_is_zone_device(folio) ||
+				    folio_test_ksm(folio))
 					continue;
 
 				/* Also skip shared copy-on-write pages */
 				if (is_cow_mapping(vma->vm_flags) &&
-				    page_count(page) != 1)
+				    folio_ref_count(folio) != 1)
 					continue;
 
 				/*
@@ -136,14 +137,15 @@ static long change_pte_range(struct mmu_gather *tlb,
 				 * it cannot move them all from MIGRATE_ASYNC
 				 * context.
 				 */
-				if (page_is_file_lru(page) && PageDirty(page))
+				if (folio_is_file_lru(folio) &&
+				    folio_test_dirty(folio))
 					continue;
 
 				/*
 				 * Don't mess with PTEs if page is already on the node
 				 * a single-threaded process is running on.
 				 */
-				nid = page_to_nid(page);
+				nid = folio_nid(folio);
 				if (target_node == nid)
 					continue;
 				toptier = node_is_toptier(nid);
@@ -157,7 +159,7 @@ static long change_pte_range(struct mmu_gather *tlb,
 					continue;
 				if (sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING &&
 				    !toptier)
-					xchg_page_access_time(page,
+					xchg_page_access_time(&folio->page,
 						jiffies_to_msecs(jiffies));
 			}
 
-- 
2.27.0


  parent reply	other threads:[~2023-09-26  0:53 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26  0:52 [PATCH -next rfc 0/9] mm: convert page cpupid functions to folios Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 1/9] mm_types: add _last_cpupid into folio Kefeng Wang
2023-09-26  0:52 ` Kefeng Wang [this message]
2023-09-26  0:52 ` [PATCH -next 3/9] mm: huge_memory: use a folio in change_huge_pmd() Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 4/9] mm: convert xchg_page_access_time to xchg_folio_access_time() Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 5/9] mm: convert page_cpupid_last() to folio_cpupid_last() Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 6/9] mm: make wp_page_reuse() and finish_mkwrite_fault() to take a folio Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 7/9] mm: convert page_cpupid_xchg_last() to folio_cpupid_xchg_last() Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 8/9] mm: page_alloc: use a folio in free_pages_prepare() Kefeng Wang
2023-09-26  7:49   ` David Hildenbrand
2023-09-26  9:39     ` Kefeng Wang
2023-09-27 12:08       ` Kefeng Wang
2023-09-26  0:52 ` [PATCH -next 9/9] mm: convert page_cpupid_reset_last() to folio_cpupid_reset_last() Kefeng Wang

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