linux-kernel - [PATCH v3 21/22] mm: change pmdp_huge_get_and_clear_full take vm_area

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Message-Id: <20200420124434.47330-22-aneesh.kumar@linux.ibm.com>
Date:   Mon, 20 Apr 2020 18:14:33 +0530
From:   "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org, mpe@...erman.id.au,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        kvm-ppc@...r.kernel.org
Cc:     npiggin@...il.com, paulus@...abs.org, leonardo@...ux.ibm.com,
        kirill@...temov.name,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        akpm@...ux-foundation.org
Subject: [PATCH v3 21/22] mm: change pmdp_huge_get_and_clear_full take vm_area_struct as arg

We will use this in later patch to do tlb flush when clearing pmd entries.

Cc: kirill@...temov.name
Cc: akpm@...ux-foundation.org
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>
---
 arch/s390/include/asm/pgtable.h | 4 ++--
 include/asm-generic/pgtable.h   | 4 ++--
 mm/huge_memory.c                | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 6076c8c912d2..e2528e057980 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1560,7 +1560,7 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 }
 
 #define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
-static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
+static inline pmd_t pmdp_huge_get_and_clear_full(struct vm_area_struct *vma,
 						 unsigned long addr,
 						 pmd_t *pmdp, int full)
 {
@@ -1569,7 +1569,7 @@ static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
 		*pmdp = __pmd(_SEGMENT_ENTRY_EMPTY);
 		return pmd;
 	}
-	return pmdp_xchg_lazy(mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_EMPTY));
+	return pmdp_xchg_lazy(vma->vm_mm, addr, pmdp, __pmd(_SEGMENT_ENTRY_EMPTY));
 }
 
 #define __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 329b8c8ca703..d10be362eafa 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -159,11 +159,11 @@ static inline pud_t pudp_huge_get_and_clear(struct mm_struct *mm,
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 #ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
-static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
+static inline pmd_t pmdp_huge_get_and_clear_full(struct vm_area_struct *vma,
 					    unsigned long address, pmd_t *pmdp,
 					    int full)
 {
-	return pmdp_huge_get_and_clear(mm, address, pmdp);
+	return pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
 }
 #endif
 
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 6ecd1045113b..16f2bd6f1549 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1852,8 +1852,8 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
 	 * pgtable_trans_huge_withdraw after finishing pmdp related
 	 * operations.
 	 */
-	orig_pmd = pmdp_huge_get_and_clear_full(tlb->mm, addr, pmd,
-			tlb->fullmm);
+	orig_pmd = pmdp_huge_get_and_clear_full(vma, addr, pmd,
+						tlb->fullmm);
 	tlb_remove_pmd_tlb_entry(tlb, pmd, addr);
 	if (vma_is_special_huge(vma)) {
 		if (arch_needs_pgtable_deposit())
-- 
2.25.3