On 2/14/20 11:45 AM, Minchan Kim wrote: > diff --git a/fs/io_uring.c b/fs/io_uring.c > index 63beda9bafc5..1c7e9cd6c8ce 100644 > --- a/fs/io_uring.c > +++ b/fs/io_uring.c > @@ -2736,7 +2736,7 @@ static int io_madvise(struct io_kiocb *req, struct io_kiocb **nxt, > if (force_nonblock) > return -EAGAIN; > > - ret = do_madvise(ma->addr, ma->len, ma->advice); > + ret = do_madvise(NULL, current->mm, ma->addr, ma->len, ma->advice); > if (ret < 0) > req_set_fail_links(req); > io_cqring_add_event(req, ret); I think we want to use req->work.mm here - it'll be the same as current->mm at this point, but it makes it clear that we're using a grabbed mm. -- Jens Axboe
