[PATCH v3 27/66] arch/powerpc: Remove mmap linked list from mm/book3s32/tlb

[Liam Howlett]

From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>

Start using the maple tree

Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
 arch/powerpc/mm/book3s32/tlb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/book3s32/tlb.c b/arch/powerpc/mm/book3s32/tlb.c
index 19f0ef950d77..2c8b991de8e8 100644
--- a/arch/powerpc/mm/book3s32/tlb.c
+++ b/arch/powerpc/mm/book3s32/tlb.c
@@ -81,6 +81,7 @@ EXPORT_SYMBOL(hash__flush_range);
 void hash__flush_tlb_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *mp;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
 	/*
 	 * It is safe to go down the mm's list of vmas when called
@@ -88,8 +89,10 @@ void hash__flush_tlb_mm(struct mm_struct *mm)
 	 * unmap_region or exit_mmap, but not from vmtruncate on SMP -
 	 * but it seems dup_mmap is the only SMP case which gets here.
 	 */
-	for (mp = mm->mmap; mp != NULL; mp = mp->vm_next)
+	rcu_read_lock();
+	mas_for_each(&mas, mp, ULONG_MAX)
 		hash__flush_range(mp->vm_mm, mp->vm_start, mp->vm_end);
+	rcu_read_unlock();
 }
 EXPORT_SYMBOL(hash__flush_tlb_mm);
 
-- 
2.30.2