um: remove vma linked list walk

Use the VMA iterator instead.

Link: https://lkml.kernel.org/r/20220504011345.662299-24-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20220621204632.3370049-40-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20220720021727.17018-40-Liam.Howlett@oracle.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hulk Robot <hulkci@huawei.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index bc38f79ca3a38242a5165685910528e18c1f98a4..ad449173a1a1cdf20f3973fdfea96539392bc343 100644 (file)
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -584,21 +584,19 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
 
 void flush_tlb_mm(struct mm_struct *mm)
 {
-       struct vm_area_struct *vma = mm->mmap;
+       struct vm_area_struct *vma;
+       VMA_ITERATOR(vmi, mm, 0);
 
-       while (vma != NULL) {
+       for_each_vma(vmi, vma)
                fix_range(mm, vma->vm_start, vma->vm_end, 0);
-               vma = vma->vm_next;
-       }
 }
 
 void force_flush_all(void)
 {
        struct mm_struct *mm = current->mm;
-       struct vm_area_struct *vma = mm->mmap;
+       struct vm_area_struct *vma;
+       VMA_ITERATOR(vmi, mm, 0);
 
-       while (vma != NULL) {
+       for_each_vma(vmi, vma)
                fix_range(mm, vma->vm_start, vma->vm_end, 1);
-               vma = vma->vm_next;
-       }
 }