[PATCHv2] mm/mmap.c: lines in __do_munmap repeat logic of inlined find_vma_intersection

[Gonzalo Matias Juarez Tello <gmjuareztello@gmail.com>]

Some lines in __do_munmap used the same logic as find_vma_intersection
(which is inlined) instead of directly using that function.

(Can't believe I made a typo in the first one, compiled this one,
sorry first patch kinda nervous for some reason)

Signed-off-by: Gonzalo Matias Juarez Tello <gmjuareztello@gmail.com>
---
 mm/mmap.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index 3f287599a7a3..1b29f8bf8344 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2823,15 +2823,10 @@ int __do_munmap(struct mm_struct *mm, unsigned long start, size_t len,
 	arch_unmap(mm, start, end);
 
 	/* Find the first overlapping VMA */
-	vma = find_vma(mm, start);
+	vma = find_vma_intersection(mm, start, end);
 	if (!vma)
 		return 0;
 	prev = vma->vm_prev;
-	/* we have  start < vma->vm_end  */
-
-	/* if it doesn't overlap, we have nothing.. */
-	if (vma->vm_start >= end)
-		return 0;
 
 	/*
 	 * If we need to split any vma, do it now to save pain later.
-- 
2.31.1