From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: parisc: remove mmap linked list from cache handling

Use the VMA iterator instead.

Link: https://lkml.kernel.org/r/20220426150616.3937571-34-Liam.Howlett@oracle.com
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>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/parisc/kernel/cache.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/arch/parisc/kernel/cache.c~parisc-remove-mmap-linked-list-from-cache-handling
+++ a/arch/parisc/kernel/cache.c
@@ -536,9 +536,11 @@ static inline unsigned long mm_total_siz
 {
 	struct vm_area_struct *vma;
 	unsigned long usize = 0;
+	VMA_ITERATOR(vmi, mm, 0);
 
-	for (vma = mm->mmap; vma; vma = vma->vm_next)
+	for_each_vma(vmi, vma)
 		usize += vma->vm_end - vma->vm_start;
+
 	return usize;
 }
 
@@ -578,6 +580,7 @@ static void flush_cache_pages(struct vm_
 void flush_cache_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
+	VMA_ITERATOR(vmi, mm, 0);
 
 	/* Flushing the whole cache on each cpu takes forever on
 	   rp3440, etc.  So, avoid it if the mm isn't too big.  */
@@ -589,7 +592,7 @@ void flush_cache_mm(struct mm_struct *mm
 		return;
 	}
 
-	for (vma = mm->mmap; vma; vma = vma->vm_next)
+	for_each_vma(vmi, vma)
 		flush_cache_pages(vma, mm, vma->vm_start, vma->vm_end);
 }
 
_