nfsd4: add filename to states output

Add filename to states output for ease of debugging.
Signed-off-by: Achilles Gaikwad <agaikwad@redhat.com>
Signed-off-by: Kenneth Dsouza <kdsouza@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -2406,6 +2406,11 @@ static void states_stop(struct seq_file *s, void *v)
 	spin_unlock(&clp->cl_lock);
 }
 
+static void nfs4_show_fname(struct seq_file *s, struct nfsd_file *f)
+{
+         seq_printf(s, "filename: \"%pD2\"", f->nf_file);
+}
+
 static void nfs4_show_superblock(struct seq_file *s, struct nfsd_file *f)
 {
 	struct inode *inode = f->nf_inode;
@@ -2459,6 +2464,8 @@ static int nfs4_show_open(struct seq_file *s, struct nfs4_stid *st)
 
 	nfs4_show_superblock(s, file);
 	seq_printf(s, ", ");
+	nfs4_show_fname(s, file);
+	seq_printf(s, ", ");
 	nfs4_show_owner(s, oo);
 	seq_printf(s, " }\n");
 	nfsd_file_put(file);
@@ -2492,6 +2499,8 @@ static int nfs4_show_lock(struct seq_file *s, struct nfs4_stid *st)
 	nfs4_show_superblock(s, file);
 	/* XXX: open stateid? */
 	seq_printf(s, ", ");
+	nfs4_show_fname(s, file);
+	seq_printf(s, ", ");
 	nfs4_show_owner(s, oo);
 	seq_printf(s, " }\n");
 	nfsd_file_put(file);
@@ -2520,6 +2529,8 @@ static int nfs4_show_deleg(struct seq_file *s, struct nfs4_stid *st)
 	/* XXX: lease time, whether it's being recalled. */
 
 	nfs4_show_superblock(s, file);
+	seq_printf(s, ", ");
+	nfs4_show_fname(s, file);
 	seq_printf(s, " }\n");
 
 	return 0;
@@ -2540,6 +2551,8 @@ static int nfs4_show_layout(struct seq_file *s, struct nfs4_stid *st)
 	/* XXX: What else would be useful? */
 
 	nfs4_show_superblock(s, file);
+	seq_printf(s, ", ");
+	nfs4_show_fname(s, file);
 	seq_printf(s, " }\n");
 
 	return 0;