pNFS: Don't mark the inode as revalidated if a LAYOUTCOMMIT is outstanding

We know that the attributes will need updating if there is still a
LAYOUTCOMMIT outstanding.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index d6be529..181283c 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -629,6 +629,13 @@
 }
 
 static inline bool
+pnfs_layoutcommit_outstanding(struct inode *inode)
+{
+	return false;
+}
+
+
+static inline bool
 pnfs_roc(struct inode *ino)
 {
 	return false;