linux-kernel - [PATCH v5 08/25] mm: Remove pte_next_pfn() and replace with pte_advance

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Date: Fri,  2 Feb 2024 08:07:39 +0000
From: Ryan Roberts <ryan.roberts@....com>
To: Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Marc Zyngier <maz@...nel.org>,
	James Morse <james.morse@....com>,
	Andrey Ryabinin <ryabinin.a.a@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <willy@...radead.org>,
	Mark Rutland <mark.rutland@....com>,
	David Hildenbrand <david@...hat.com>,
	Kefeng Wang <wangkefeng.wang@...wei.com>,
	John Hubbard <jhubbard@...dia.com>,
	Zi Yan <ziy@...dia.com>,
	Barry Song <21cnbao@...il.com>,
	Alistair Popple <apopple@...dia.com>,
	Yang Shi <shy828301@...il.com>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	"Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
	"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc: Ryan Roberts <ryan.roberts@....com>,
	linux-arm-kernel@...ts.infradead.org,
	x86@...nel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 08/25] mm: Remove pte_next_pfn() and replace with pte_advance_pfn()

Now that the architectures are converted over to pte_advance_pfn(), we
can remove the pte_next_pfn() wrapper and convert the callers to call
pte_advance_pfn().

Signed-off-by: Ryan Roberts <ryan.roberts@....com>
---
 include/linux/pgtable.h | 9 +--------
 mm/memory.c             | 4 ++--
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 815d92dcb96b..50f32cccbd92 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -212,19 +212,12 @@ static inline int pmd_dirty(pmd_t pmd)
 #define arch_flush_lazy_mmu_mode()	do {} while (0)
 #endif
 
-
-#ifndef pte_next_pfn
 #ifndef pte_advance_pfn
 static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr)
 {
 	return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT));
 }
 #endif
-static inline pte_t pte_next_pfn(pte_t pte)
-{
-	return pte_advance_pfn(pte, 1);
-}
-#endif
 
 #ifndef set_ptes
 /**
@@ -256,7 +249,7 @@ static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
 		if (--nr == 0)
 			break;
 		ptep++;
-		pte = pte_next_pfn(pte);
+		pte = pte_advance_pfn(pte, 1);
 	}
 	arch_leave_lazy_mmu_mode();
 }
diff --git a/mm/memory.c b/mm/memory.c
index 38a010c4d04d..65fbe4f886c1 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -988,7 +988,7 @@ static inline int folio_pte_batch(struct folio *folio, unsigned long addr,
 {
 	unsigned long folio_end_pfn = folio_pfn(folio) + folio_nr_pages(folio);
 	const pte_t *end_ptep = start_ptep + max_nr;
-	pte_t expected_pte = __pte_batch_clear_ignored(pte_next_pfn(pte), flags);
+	pte_t expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, 1), flags);
 	pte_t *ptep = start_ptep + 1;
 	bool writable;
 
@@ -1017,7 +1017,7 @@ static inline int folio_pte_batch(struct folio *folio, unsigned long addr,
 		if (any_writable)
 			*any_writable |= writable;
 
-		expected_pte = pte_next_pfn(expected_pte);
+		expected_pte = pte_advance_pfn(expected_pte, 1);
 		ptep++;
 	}
 
-- 
2.25.1