[v6,33/71] parisc: Remove mmap linked list from cache handling

Commit Message

Helge Deller Feb. 17, 2022, 8:18 p.m. UTC

To be queued up after next merge window:

From: "Liam R. Howlett" <[e-mail]>

Use the VMA iterator instead.

Signed-off-by: Matthew Wilcox (Oracle) <[e-mail]>
Signed-off-by: Liam R. Howlett <[e-mail]>
Acked-by: Vlastimil Babka <[e-mail]>
---
 arch/parisc/kernel/cache.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--
2.34.1

Patch

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 94150b91c96f..c3a8d29b6f9f 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -519,9 +519,11 @@  static inline unsigned long mm_total_size(struct mm_struct *mm)
 {
 	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;
 }

@@ -570,6 +572,7 @@  static void flush_user_cache_tlb(struct vm_area_struct *vma,
 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.  */
@@ -583,13 +586,13 @@  void flush_cache_mm(struct mm_struct *mm)

 	preempt_disable();
 	if (mm->context == mfsp(3)) {
-		for (vma = mm->mmap; vma; vma = vma->vm_next)
+		for_each_vma(vmi, vma)
 			flush_user_cache_tlb(vma, vma->vm_start, vma->vm_end);
 		preempt_enable();
 		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);
 	preempt_enable();
 }