From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Mon, 22 Aug 2022 15:06:29 +0000 (+0000)
Subject: mm/madvise: use vma_find() instead of vma linked list
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=628c8f287b6906c5fba72b23bb3323955c71ee4f;p=users%2Fjedix%2Flinux-maple.git

mm/madvise: use vma_find() instead of vma linked list

madvise_walk_vmas() no longer uses linked list.

Link: https://lkml.kernel.org/r/20220822150128.1562046-55-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/madvise.c b/mm/madvise.c
index af97100a0727..682e1d161aef 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -1242,7 +1242,7 @@ int madvise_walk_vmas(struct mm_struct *mm, unsigned long start,
 		if (start >= end)
 			break;
 		if (prev)
-			vma = prev->vm_next;
+			vma = find_vma(mm, prev->vm_end);
 		else	/* madvise_remove dropped mmap_lock */
 			vma = find_vma(mm, start);
 	}