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authorLiam Howlett <liam.howlett@oracle.com>2021-06-29 05:39:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 20:53:52 +0300
commit46e6b31d4617612e47daeb7b4b6350b116349f6d (patch)
treedd7c0f43d6ef1efbc37b2e1f028e76a95781a996 /lib/test_hmm.c
parent9016ddeddf8510f79b4c5816855cdd244e84ad7f (diff)
downloadlinux-46e6b31d4617612e47daeb7b4b6350b116349f6d.tar.xz
lib/test_hmm: use vma_lookup() in dmirror_migrate()
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. Link: https://lkml.kernel.org/r/20210521174745.2219620-18-Liam.Howlett@Oracle.com 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> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/test_hmm.c')
-rw-r--r--lib/test_hmm.c5
1 files changed, 2 insertions, 3 deletions
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;
}