From 10027551ccf5459cc771c31ac8bc8e5cc8db45f8 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Thu, 9 Apr 2015 17:03:53 -0700
Subject: [PATCH] f2fs: pass checkpoint reason on roll-forward recovery

This patch adds CP_RECOVERY to remain recovery information for checkpoint.
And, it makes sure writing checkpoint in this case.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/checkpoint.c        | 6 +++++-
 fs/f2fs/f2fs.h              | 1 +
 fs/f2fs/recovery.c          | 2 +-
 include/trace/events/f2fs.h | 1 +
 4 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 384bfc4c36c3..a5e17a2a0781 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1051,7 +1051,7 @@ void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	mutex_lock(&sbi->cp_mutex);
 
 	if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
-			cpc->reason != CP_DISCARD && cpc->reason != CP_UMOUNT)
+		(cpc->reason == CP_FASTBOOT || cpc->reason == CP_SYNC))
 		goto out;
 	if (unlikely(f2fs_cp_error(sbi)))
 		goto out;
@@ -1086,6 +1086,10 @@ void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 	unblock_operations(sbi);
 	stat_inc_cp_count(sbi->stat_info);
+
+	if (cpc->reason == CP_RECOVERY)
+		f2fs_msg(sbi->sb, KERN_NOTICE,
+			"checkpoint: version = %llx", ckpt_ver);
 out:
 	mutex_unlock(&sbi->cp_mutex);
 	trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 053361ace0ec..c06a25e5cec3 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -103,6 +103,7 @@ enum {
 	CP_UMOUNT,
 	CP_FASTBOOT,
 	CP_SYNC,
+	CP_RECOVERY,
 	CP_DISCARD,
 };
 
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 4b742c96c223..8d8ea99f2156 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -564,7 +564,7 @@ out:
 		mutex_unlock(&sbi->cp_mutex);
 	} else if (need_writecp) {
 		struct cp_control cpc = {
-			.reason = CP_SYNC,
+			.reason = CP_RECOVERY,
 		};
 		mutex_unlock(&sbi->cp_mutex);
 		write_checkpoint(sbi, &cpc);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 75724bd28356..8804f22a08d1 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -78,6 +78,7 @@
 		{ CP_UMOUNT,	"Umount" },				\
 		{ CP_FASTBOOT,	"Fastboot" },				\
 		{ CP_SYNC,	"Sync" },				\
+		{ CP_RECOVERY,	"Recovery" },				\
 		{ CP_DISCARD,	"Discard" })
 
 struct victim_sel_policy;