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Message-ID: <20220215144241.3812052-53-Liam.Howlett@oracle.com>
Date: Tue, 15 Feb 2022 14:43:22 +0000
From: Liam Howlett <liam.howlett@...cle.com>
To: "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v6 53/71] mm/gup: Use maple tree navigation instead of linked
list
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
Use find_vma_intersection() to locate the VMAs in __mm_populate()
instead of using find_vma() and the linked list.
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
mm/gup.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c
index a9d4d724aef7..2d12b423fea6 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1609,10 +1609,11 @@ 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, nstart, end);
} else if (nstart >= vma->vm_end)
- vma = vma->vm_next;
- if (!vma || vma->vm_start >= end)
+ vma = find_vma_intersection(mm, vma->vm_end, end);
+
+ if (!vma)
break;
/*
* Set [nstart; nend) to intersection of desired address
--
2.34.1
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