diff mbox series

[v2,17/22] lib/test_hmm: Use vma_lookup() in dmirror_migrate()

Message ID 20210521174745.2219620-18-Liam.Howlett@Oracle.com (mailing list archive)
State New, archived
Headers show
Series mm: Add vma_lookup() | expand

Commit Message

Liam R. Howlett May 21, 2021, 5:48 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>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
---
 lib/test_hmm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 80a78877bd93..15f2e2db77bc 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -686,9 +686,8 @@  static int dmirror_migrate(struct dmirror *dmirror,
 
 	mmap_read_lock(mm);
 	for (addr = start; addr < end; addr = next) {
-		vma = find_vma(mm, addr);
-		if (!vma || addr < vma->vm_start ||
-		    !(vma->vm_flags & VM_READ)) {
+		vma = vma_lookup(mm, addr);
+		if (!vma || !(vma->vm_flags & VM_READ)) {
 			ret = -EINVAL;
 			goto out;
 		}