Commit c9ecf989 authored May 30, 2013 by Brian Foster Committed by Miklos Szeredi Jun 03, 2013

fuse: return -EIOCBQUEUED from fuse_direct_IO() for all async requests



If request submission fails for an async request (i.e.,
get_user_pages() returns -ERESTARTSYS), we currently skip the
-EIOCBQUEUED return and drop into wait_for_sync_kiocb() forever.

Avoid this by always returning -EIOCBQUEUED for async requests. If
an error occurs, the error is passed into fuse_aio_complete(),
returned via aio_complete() and thus propagated to userspace via
io_getevents().

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Maxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

parent 28420dad

fs/fuse/file.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2432,7 +2432,7 @@ fuse_direct_IO(int rw, struct kiocb iocb, const struct iovec iov,
		fuse_aio_complete(io, ret < 0 ? ret : 0, -1);

		/* we have a non-extending, async request, so return */
		if (ret > 0 && !is_sync_kiocb(iocb))
		if (!is_sync_kiocb(iocb))
		return -EIOCBQUEUED;

		ret = wait_on_sync_kiocb(iocb);