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Subject[PATCH v2 52/70] mm/gup: Use maple tree navigation instead of linked list
Date
Signed-off-by: Liam R. Howlett <Liam.Howlett@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
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