1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 12ecf6ee9cb5..26d084a1fea8 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1781,6 +1781,10 @@ struct f2fs_sb_info {
 	bool iostat_enable;
 	unsigned long iostat_next_period;
 	unsigned int iostat_period_ms;
+
+	/* For io latency related statistics info in one iostat period */
+	spinlock_t iostat_lat_lock;
+	struct iostat_lat_info *iostat_io_lat;
 #endif
 };