ceph: build cleanly without CONFIG_DEBUG_FS

Signed-off-by: Sage Weil <sage@newdream.net>

fs/ceph/debugfs.c

@@ -8,6 +8,8 @@
 #include "super.h"
 #include "mds_client.h"
 
+#ifdef CONFIG_DEBUG_FS
+
 /*
  * Implement /sys/kernel/debug/ceph fun
  *
@@ -423,3 +425,24 @@ void ceph_debugfs_client_cleanup(struct ceph_client *client)
 	debugfs_remove(client->debugfs_dir);
 }
 
+#else  // CONFIG_DEBUG_FS
+
+int __init ceph_debugfs_init(void)
+{
+	return 0;
+}
+
+void ceph_debugfs_cleanup(void)
+{
+}
+
+int ceph_debugfs_client_init(struct ceph_client *client)
+{
+	return 0;
+}
+
+void ceph_debugfs_client_cleanup(struct ceph_client *client)
+{
+}
+
+#endif  // CONFIG_DEBUG_FS

fs/ceph/mds_client.h

@@ -256,7 +256,9 @@ struct ceph_mds_client {
 	spinlock_t        cap_dirty_lock;   /* protects above items */
 	wait_queue_head_t cap_flushing_wq;
 
+#ifdef CONFIG_DEBUG_FS
 	struct dentry 	  *debugfs_file;
+#endif
 
 	spinlock_t	  dentry_lru_lock;
 	struct list_head  dentry_lru;

fs/ceph/mon_client.h

@@ -78,7 +78,9 @@ struct ceph_mon_client {
 	int want_next_osdmap; /* 1 = want, 2 = want+asked */
 	u32 have_osdmap, have_mdsmap;
 
+#ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_file;
+#endif
 };
 
 extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);

fs/ceph/osd_client.h

@@ -83,7 +83,9 @@ struct ceph_osd_client {
 	struct rb_root         requests;      /* pending requests */
 	int                    num_requests;
 	struct delayed_work    timeout_work;
+#ifdef CONFIG_DEBUG_FS
 	struct dentry 	       *debugfs_file;
+#endif
 
 	mempool_t              *req_mempool;
 

fs/ceph/super.h

@@ -112,9 +112,11 @@ static inline unsigned long time_sub(unsigned long a, unsigned long b)
  */
 struct ceph_client {
 	__s64 whoami;                   /* my client number */
+#ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_monmap;
 	struct dentry *debugfs_mdsmap, *debugfs_osdmap;
 	struct dentry *debugfs_dir, *debugfs_dentry_lru, *debugfs_caps;
+#endif
 
 	struct mutex mount_mutex;       /* serialize mount attempts */
 	struct ceph_mount_args *mount_args;