nfs4_open_revalidate 1070 fs/nfs/dir.c   	ret = nfs4_open_revalidate(dir, dentry, openflags, nd);
nfs4_open_revalidate  184 fs/nfs/nfs4_fs.h extern int nfs4_open_revalidate(struct inode *, struct dentry *, int, struct nameidata *);