btrfs: introduce ratelimited variants of message printing functions

Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ctree.h

@@ -4075,20 +4075,41 @@ void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
 #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \
 	btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args)
 
+/*
+ * Wrappers that use a ratelimited printk
+ */
+#define btrfs_emerg_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args)
+#define btrfs_alert_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args)
+#define btrfs_crit_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args)
+#define btrfs_err_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args)
+#define btrfs_warn_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args)
+#define btrfs_notice_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args)
+#define btrfs_info_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args)
 #ifdef DEBUG
 #define btrfs_debug(fs_info, fmt, args...) \
 	btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \
 	btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
 	btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
+#define btrfs_debug_rl(fs_info, fmt, args...) \
+	btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
 #else
 #define btrfs_debug(fs_info, fmt, args...) \
     no_printk(KERN_DEBUG fmt, ##args)
 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \
 	no_printk(KERN_DEBUG fmt, ##args)
 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
 	no_printk(KERN_DEBUG fmt, ##args)
+#define btrfs_debug_rl(fs_info, fmt, args...) \
+	no_printk(KERN_DEBUG fmt, ##args)
 #endif
 
 #define btrfs_printk_in_rcu(fs_info, fmt, args...)	\