From b7b7e624afa88125cfc2ad196f431f3fea1323f0 Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Mon, 4 Jan 2021 15:03:49 -0500 Subject: [PATCH] mm/mremap: Use vma_next() instead of vma linked list Signed-off-by: Liam R. Howlett --- mm/mremap.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/mremap.c b/mm/mremap.c index a0b3430b24fe..1b7bb63545a4 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -701,7 +701,7 @@ static unsigned long move_vma(struct vm_area_struct *vma, if (excess) { vma->vm_flags |= VM_ACCOUNT; if (split) - vma->vm_next->vm_flags |= VM_ACCOUNT; + find_vma(mm, vma->vm_end)->vm_flags |= VM_ACCOUNT; } return new_addr; @@ -875,9 +875,11 @@ out: static int vma_expandable(struct vm_area_struct *vma, unsigned long delta) { unsigned long end = vma->vm_end + delta; + struct vm_area_struct *next; if (end < vma->vm_end) /* overflow */ return 0; - if (vma->vm_next && vma->vm_next->vm_start < end) /* intersection */ + next = find_vma(vma->vm_mm, vma->vm_end); + if (next && next->vm_start < end) /* intersection */ return 0; if (get_unmapped_area(NULL, vma->vm_start, end - vma->vm_start, 0, MAP_FIXED) & ~PAGE_MASK) -- 2.50.1