[PATCH v2 52/70] mm/gup: Use maple tree navigation instead of linked list

[Liam R. Howlett]

Signed-off-by: Liam R. Howlett <liam.howl...@oracle.com>
---
 mm/gup.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index b06e2a6d90187..20392efb2d9ba 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1465,6 +1465,7 @@ int __mm_populate(unsigned long start, unsigned long len, 
int ignore_errors)
        struct vm_area_struct *vma = NULL;
        int locked = 0;
        long ret = 0;
+       MA_STATE(mas, &mm->mm_mt, start, start);
 
        end = start + len;
 
@@ -1476,10 +1477,10 @@ int __mm_populate(unsigned long start, unsigned long 
len, int ignore_errors)
                if (!locked) {
                        locked = 1;
                        mmap_read_lock(mm);
-                       vma = find_vma(mm, nstart);
+                       vma = mas_find(&mas, end);
                } else if (nstart >= vma->vm_end)
-                       vma = vma->vm_next;
-               if (!vma || vma->vm_start >= end)
+                       vma = mas_next(&mas, end);
+               if (!vma)
                        break;
                /*
                 * Set [nstart; nend) to intersection of desired address
-- 
2.28.0