[PATCH 10/24] nilfs2: introduce recovery subsystem debugging output option

[PATCH 10/24] nilfs2: introduce recovery subsystem debugging output option

[Vyacheslav Dubeyko]

From: Vyacheslav Dubeyko <slava@dubeyko.com>
Subject: [PATCH 10/24] nilfs2: introduce recovery subsystem debugging output option

This patch adds subsystem's flags for recovery.c module.
Flags for these modules are grouped by CONFIG_NILFS2_DEBUG_RECOVERY_SUBSYSTEM
kernel configuration option. This kernel configuration option enables
(or disables) debugging output from of all above-mentioned modules.

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
CC: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
---
 fs/nilfs2/Kconfig |    6 ++++++
 fs/nilfs2/debug.h |    9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/fs/nilfs2/Kconfig b/fs/nilfs2/Kconfig
index 465b9aa..5eb5140 100644
--- a/fs/nilfs2/Kconfig
+++ b/fs/nilfs2/Kconfig
@@ -73,6 +73,12 @@ config NILFS2_DEBUG_GC_SUBSYSTEM
 	help
 	  This option enables debugging output in gcinode.c module.
 
+config NILFS2_DEBUG_RECOVERY_SUBSYSTEM
+	bool "Enable recovery subsystem debugging output"
+	default n
+	help
+	  This option enables debugging output in recovery.c module.
+
 endif # NILFS2_DEBUG_SUBSYSTEMS
 
 endif # NILFS2_DEBUG
diff --git a/fs/nilfs2/debug.h b/fs/nilfs2/debug.h
index ae00e9b..538726d 100644
--- a/fs/nilfs2/debug.h
+++ b/fs/nilfs2/debug.h
@@ -65,6 +65,12 @@
  */
 #define DBG_GCINODE	0x00008000
 
+/*
+ * These flags enable debugging output in modules that
+ * implement recovery subsystem functionality (recovery.c).
+ */
+#define DBG_RECOVERY	0x00010000
+
 #ifdef CONFIG_NILFS2_DEBUG
 
 /* Definition of flags' set for debugging */
@@ -83,6 +89,9 @@ static u32 DBG_MASK = (
 #ifdef CONFIG_NILFS2_DEBUG_GC_SUBSYSTEM
 	DBG_GCINODE | DBG_IOCTL |
 #endif /* CONFIG_NILFS2_DEBUG_GC_SUBSYSTEM */
+#ifdef CONFIG_NILFS2_DEBUG_RECOVERY_SUBSYSTEM
+	DBG_RECOVERY |
+#endif /* CONFIG_NILFS2_DEBUG_RECOVERY_SUBSYSTEM */
 	0);
 
 #define NILFS2_SUBSYS_MASK	0x0FFFFFFF
-- 
1.7.9.5