[merged mm-stable] mm-madvise-use-vma_lookup-instead-of-find_vma.patch removed from -mm tree

[merged mm-stable] mm-madvise-use-vma_lookup-instead-of-find_vma.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/madvise: use vma_lookup() instead of find_vma()
has been removed from the -mm tree.  Its filename was
     mm-madvise-use-vma_lookup-instead-of-find_vma.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: ZhangPeng <zhangpeng362@huawei.com>
Subject: mm/madvise: use vma_lookup() instead of find_vma()
Date: Tue, 4 Apr 2023 17:45:15 +0800

Using vma_lookup() verifies the address is contained in the found vma. 
This results in easier to read the code.

Link: https://lkml.kernel.org/r/20230404094515.1883552-1-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/madvise.c |   14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

--- a/mm/madvise.c~mm-madvise-use-vma_lookup-instead-of-find_vma
+++ a/mm/madvise.c
@@ -852,21 +852,9 @@ static long madvise_dontneed_free(struct
 		*prev = NULL; /* mmap_lock has been dropped, prev is stale */
 
 		mmap_read_lock(mm);
-		vma = find_vma(mm, start);
+		vma = vma_lookup(mm, start);
 		if (!vma)
 			return -ENOMEM;
-		if (start < vma->vm_start) {
-			/*
-			 * This "vma" under revalidation is the one
-			 * with the lowest vma->vm_start where start
-			 * is also < vma->vm_end. If start <
-			 * vma->vm_start it means an hole materialized
-			 * in the user address space within the
-			 * virtual range passed to MADV_DONTNEED
-			 * or MADV_FREE.
-			 */
-			return -ENOMEM;
-		}
 		/*
 		 * Potential end adjustment for hugetlb vma is OK as
 		 * the check below keeps end within vma.
_

Patches currently in -mm which might be from zhangpeng362@huawei.com are

userfaultfd-convert-mfill_atomic_pte_copy-to-use-a-folio.patch
userfaultfd-use-kmap_local_page-in-copy_huge_page_from_user.patch
userfaultfd-convert-copy_huge_page_from_user-to-copy_folio_from_user.patch
userfaultfd-convert-mfill_atomic_hugetlb-to-use-a-folio.patch
mm-convert-copy_user_huge_page-to-copy_user_large_folio.patch
userfaultfd-convert-mfill_atomic-to-use-a-folio.patch
userfaultfd-use-helper-function-range_in_vma.patch