diff options
| author |   Liam Howlett <liam.howlett@oracle.com> | 2021-06-28 19:39:38 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 10:53:52 -0700 |
| commit | 46e6b31d4617612e47daeb7b4b6350b116349f6d (patch) | |
| tree | dd7c0f43d6ef1efbc37b2e1f028e76a95781a996 /lib | |
| parent | kernel/events/uprobes: use vma_lookup() in find_active_uprobe() (diff) | |
| download | linux-dev-46e6b31d4617612e47daeb7b4b6350b116349f6d.tar.xz linux-dev-46e6b31d4617612e47daeb7b4b6350b116349f6d.zip | |
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')
| -rw-r--r-- | lib/test_hmm.c | 5 |
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; } |