[PATCH v3 48/66] mm/gup: Use maple tree navigation instead of linked list
From: Liam Howlett <hidden>
Date: 2021-10-05 01:35:06
Also in:
lkml
Subsystem:
memory management, memory management - gup (get user pages), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
From: "Liam R. Howlett" <redacted> Signed-off-by: Liam R. Howlett <redacted> --- mm/gup.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c
index 886d6148d3d0..f9710e475899 100644
--- a/mm/gup.c
+++ b/mm/gup.c@@ -1568,7 +1568,6 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors) long ret = 0; end = start + len; - for (nstart = start; nstart < end; nstart = nend) { /* * We want to fault in pages for [nstart; end) address range.
@@ -1577,10 +1576,10 @@ 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 = find_vma_intersection(mm, start, end); } else if (nstart >= vma->vm_end) - vma = vma->vm_next; - if (!vma || vma->vm_start >= end) + vma = vma_next(mm, vma); + if (!vma) break; /* * Set [nstart; nend) to intersection of desired address
--
2.30.2