diff mbox series

mm/mmap: Use find_vma_intersection() in do_mmap() for overlap

Message ID 20210511014328.2902782-1-Liam.Howlett@Oracle.com (mailing list archive)
State New
Headers show
Series mm/mmap: Use find_vma_intersection() in do_mmap() for overlap | expand

Commit Message

Liam Howlett May 11, 2021, 1:43 a.m. UTC
Using find_vma_intersection() avoids the need for a temporary variable
and makes the code cleaner.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 mm/mmap.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/mm/mmap.c b/mm/mmap.c
index 1bbb3225c958..016715924529 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1456,9 +1456,7 @@  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;
 	}