io_uring/register: have io_parse_restrictions() set restrictions enabled

Rather than leave this to the caller, have io_parse_restrictions() set
->registered = true if restrictions have been enabled. This is in
preparation for having finer grained restrictions.

Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: axboe

io_uring/register.c

@@ -150,6 +150,7 @@ static __cold int io_parse_restrictions(void __user *arg, unsigned int nr_args,
 		}
 	}
 	ret = nr_args;
+	restrictions->registered = true;
 err:
 	kfree(res);
 	return ret;
@@ -174,7 +175,6 @@ static __cold int io_register_restrictions(struct io_ring_ctx *ctx,
 		memset(&ctx->restrictions, 0, sizeof(ctx->restrictions));
 		return ret;
 	}
-	ctx->restrictions.registered = true;
 	return 0;
 }