fs: add new vfs_poll and file_can_poll helpers

These abstract out calls to the poll method in preparation for changes
in how we poll.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index f3bd8e941224..f6022881f147 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -208,7 +208,7 @@ int vhost_poll_start(struct vhost_poll *poll, struct file *file)
         if (poll->wqh)
                 return 0;
 
-        mask = file->f_op->poll(file, &poll->table);
+        mask = vfs_poll(file, &poll->table);
         if (mask)
                 vhost_poll_wakeup(&poll->wait, 0, 0, poll_to_key(mask));
         if (mask & EPOLLERR) {