diff mbox series

[18/22] mm/ksm: Use vma_lookup() in find_mergeable_vma()

Message ID 20210510165839.2692974-19-Liam.Howlett@Oracle.com (mailing list archive)
State New
Headers show
Series mm: Add vma_lookup() | expand

Commit Message

Liam Howlett May 10, 2021, 4:58 p.m. UTC
Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 mm/ksm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/mm/ksm.c b/mm/ksm.c
index 6bbe314c5260..ced6830d0ff4 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -521,10 +521,8 @@  static struct vm_area_struct *find_mergeable_vma(struct mm_struct *mm,
 	struct vm_area_struct *vma;
 	if (ksm_test_exit(mm))
 		return NULL;
-	vma = find_vma(mm, addr);
-	if (!vma || vma->vm_start > addr)
-		return NULL;
-	if (!(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
+	vma = vma_lookup(mm, addr);
+	if (!vma || !(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma)
 		return NULL;
 	return vma;
 }