+ mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch added to -mm tree

+ mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/debug_vm_pgtable: remove redundant pfn_{pmd/pte}() and fix one comment mistake
has been added to the -mm tree.  Its filename is
     mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch

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------------------------------------------------------
From: Shixin Liu <liushixin2@huawei.com>
Subject: mm/debug_vm_pgtable: remove redundant pfn_{pmd/pte}() and fix one comment mistake

Remove redundant pfn_{pmd/pte}() in {pmd/pte}_advanced_tests() and adjust
pfn_pud() in pud_advanced_tests() to make it similar with other two
functions.

In addition, the branch condition should be CONFIG_TRANSPARENT_HUGEPAGE
instead of CONFIG_ARCH_HAS_PTE_DEVMAP.

Link: https://lkml.kernel.org/r/20210419071820.750217-2-liushixin2@huawei.com
Signed-off-by: Shixin Liu <liushixin2@huawei.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/debug_vm_pgtable.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

--- a/mm/debug_vm_pgtable.c~mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake
+++ a/mm/debug_vm_pgtable.c
@@ -91,7 +91,7 @@ static void __init pte_advanced_tests(st
 				      unsigned long pfn, unsigned long vaddr,
 				      pgprot_t prot)
 {
-	pte_t pte = pfn_pte(pfn, prot);
+	pte_t pte;
 
 	/*
 	 * Architectures optimize set_pte_at by avoiding TLB flush.
@@ -185,7 +185,7 @@ static void __init pmd_advanced_tests(st
 				      unsigned long pfn, unsigned long vaddr,
 				      pgprot_t prot, pgtable_t pgtable)
 {
-	pmd_t pmd = pfn_pmd(pfn, prot);
+	pmd_t pmd;
 
 	if (!has_transparent_hugepage())
 		return;
@@ -300,7 +300,7 @@ static void __init pud_advanced_tests(st
 				      unsigned long pfn, unsigned long vaddr,
 				      pgprot_t prot)
 {
-	pud_t pud = pfn_pud(pfn, prot);
+	pud_t pud;
 
 	if (!has_transparent_hugepage())
 		return;
@@ -309,6 +309,7 @@ static void __init pud_advanced_tests(st
 	/* Align the address wrt HPAGE_PUD_SIZE */
 	vaddr = (vaddr & HPAGE_PUD_MASK) + HPAGE_PUD_SIZE;
 
+	pud = pfn_pud(pfn, prot);
 	set_pud_at(mm, vaddr, pudp, pud);
 	pudp_set_wrprotect(mm, vaddr, pudp);
 	pud = READ_ONCE(*pudp);
@@ -742,12 +743,12 @@ static void __init pmd_swap_soft_dirty_t
 	WARN_ON(!pmd_swp_soft_dirty(pmd_swp_mksoft_dirty(pmd)));
 	WARN_ON(pmd_swp_soft_dirty(pmd_swp_clear_soft_dirty(pmd)));
 }
-#else  /* !CONFIG_ARCH_HAS_PTE_DEVMAP */
+#else  /* !CONFIG_TRANSPARENT_HUGEPAGE */
 static void __init pmd_soft_dirty_tests(unsigned long pfn, pgprot_t prot) { }
 static void __init pmd_swap_soft_dirty_tests(unsigned long pfn, pgprot_t prot)
 {
 }
-#endif /* CONFIG_ARCH_HAS_PTE_DEVMAP */
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
 static void __init pte_swap_tests(unsigned long pfn, pgprot_t prot)
 {
_

Patches currently in -mm which might be from liushixin2@huawei.com are

mm-debug_vm_pgtable-move-pmd-pud_huge_tests-out-of-config_transparent_hugepage.patch
mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch