From 35e43c5ff4d2da700e8ed2216acae81f62800eaa Mon Sep 17 00:00:00 2001 From: Liam Howlett Date: Mon, 28 Jun 2021 19:38:44 -0700 Subject: mm/mmap: use find_vma_intersection() in do_mmap() for overlap Using find_vma_intersection() avoids the need for a temporary variable and makes the code cleaner. Link: https://lkml.kernel.org/r/20210511014328.2902782-1-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mmap.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'mm/mmap.c') diff --git a/mm/mmap.c b/mm/mmap.c index d72716f7a0b4..d8c92ae50565 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1457,9 +1457,7 @@ unsigned long do_mmap(struct file *file, unsigned long addr, return addr; if (flags & MAP_FIXED_NOREPLACE) { - struct vm_area_struct *vma = find_vma(mm, addr); - - if (vma && vma->vm_start < addr + len) + if (find_vma_intersection(mm, addr, addr + len)) return -EEXIST; } -- cgit v1.2.3