diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index c16d00e53264..13c65dd2d37d 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1222,9 +1222,6 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 	struct fuse_in *in;
 	unsigned reqsize;
 
-	if (task_active_pid_ns(current) != fc->pid_ns)
-		return -EIO;
-
  restart:
 	spin_lock(&fiq->waitq.lock);
 	err = -EAGAIN;
@@ -1262,6 +1259,13 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 
 	in = &req->in;
 	reqsize = in->h.len;
+
+	if (task_active_pid_ns(current) != fc->pid_ns) {
+		rcu_read_lock();
+		in->h.pid = pid_vnr(find_pid_ns(in->h.pid, fc->pid_ns));
+		rcu_read_unlock();
+	}
+
 	/* If request is too large, reply with an error and restart the read */
 	if (nbytes < reqsize) {
 		req->out.h.error = -EIO;
@@ -1823,9 +1827,6 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
 	struct fuse_req *req;
 	struct fuse_out_header oh;
 
-	if (task_active_pid_ns(current) != fc->pid_ns)
-		return -EIO;
-
 	if (nbytes < sizeof(struct fuse_out_header))
 		return -EINVAL;
 
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index ab60051be6e5..6d8e65cec01a 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2181,9 +2181,6 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
 	if ((fl->fl_flags & FL_CLOSE_POSIX) == FL_CLOSE_POSIX)
 		return 0;
 
-	if (pid && pid_nr == 0)
-		return -EOVERFLOW;
-
 	fuse_lk_fill(&args, file, fl, opcode, pid_nr, flock, &inarg);
 	err = fuse_simple_request(fc, &args);