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From:   Liam Howlett <liam.howlett@oracle.com>
To:     "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
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CC:     "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        Liam Howlett <liam.howlett@oracle.com>,
        Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH v13 32/70] parisc: remove mmap linked list from cache handling
Thread-Topic: [PATCH v13 32/70] parisc: remove mmap linked list from cache
 handling
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Date:   Mon, 22 Aug 2022 15:05:27 +0000
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From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

Use the VMA iterator instead.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
---
 arch/parisc/kernel/cache.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 3feb7694e0ca..1d3b8bc8a623 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -657,15 +657,20 @@ static inline unsigned long mm_total_size(struct mm_s=
truct *mm)
 {
 	struct vm_area_struct *vma;
 	unsigned long usize =3D 0;
+	VMA_ITERATOR(vmi, mm, 0);
=20
-	for (vma =3D mm->mmap; vma && usize < parisc_cache_flush_threshold; vma =
=3D vma->vm_next)
+	for_each_vma(vmi, vma) {
+		if (usize >=3D parisc_cache_flush_threshold)
+			break;
 		usize +=3D vma->vm_end - vma->vm_start;
+	}
 	return usize;
 }
=20
 void flush_cache_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
+	VMA_ITERATOR(vmi, mm, 0);
=20
 	/*
 	 * Flushing the whole cache on each cpu takes forever on
@@ -685,7 +690,7 @@ void flush_cache_mm(struct mm_struct *mm)
 	}
=20
 	/* Flush mm */
-	for (vma =3D mm->mmap; vma; vma =3D vma->vm_next)
+	for_each_vma(vmi, vma)
 		flush_cache_pages(vma, vma->vm_start, vma->vm_end);
 }
=20
--=20
2.35.1