[PATCH v4 62/66] mm/swapfile: Use maple tree iterator instead of vma linked list
From: Liam Howlett <hidden>
Date: 2021-12-01 14:39:12
Also in:
lkml
Subsystem:
memory management, memory management - swap, the rest · Maintainers:
Andrew Morton, Chris Li, Kairui Song, Linus Torvalds
From: "Liam R. Howlett" <redacted> Signed-off-by: Liam R. Howlett <redacted> --- mm/swapfile.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e59e08ef46e1..21c88b0944f9 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c@@ -2103,15 +2103,18 @@ static int unuse_mm(struct mm_struct *mm, unsigned int type, { struct vm_area_struct *vma; int ret = 0; + MA_STATE(mas, &mm->mm_mt, 0, 0); mmap_read_lock(mm); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + mas_for_each(&mas, vma, ULONG_MAX) { if (vma->anon_vma) { ret = unuse_vma(vma, type, frontswap, fs_pages_to_unuse); if (ret) break; } + + mas_pause(&mas); cond_resched(); } mmap_read_unlock(mm);
--
2.30.2