1 files changed, 28 insertions, 0 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f143975627e0..9a3c85bdd77e 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -339,6 +339,34 @@ static inline const char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
                 return '\\';
 }
 
+#ifdef CONFIG_CIFS_STATS
+#define cifs_stats_inc atomic_inc
+
+static inline void cifs_stats_bytes_written(struct cifsTconInfo *tcon,
+                                            unsigned int bytes)
+{
+        if (bytes) {
+                spin_lock(&tcon->stat_lock);
+                tcon->bytes_written += bytes;
+                spin_unlock(&tcon->stat_lock);
+        }
+}
+
+static inline void cifs_stats_bytes_read(struct cifsTconInfo *tcon,
+                                         unsigned int bytes)
+{
+        spin_lock(&tcon->stat_lock);
+        tcon->bytes_read += bytes;
+        spin_unlock(&tcon->stat_lock);
+}
+#else
+
+#define  cifs_stats_inc(field) do {} while(0)
+#define  cifs_stats_bytes_written(tcon, bytes) do {} while(0)
+#define  cifs_stats_bytes_read(tcon, bytes) do {} while(0)
+
+#endif
+
 /* one of these for every pending CIFS request to the server */
 struct mid_q_entry {
         struct list_head qhead; /* mids waiting on reply from this server */