linux-kernel - [PATCH 1/5] f2fs: disable roll-forward when active

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Date:	Sat,  8 Nov 2014 23:36:05 -0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc:	Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 1/5] f2fs: disable roll-forward when active_logs = 2

The roll-forward mechanism should be activated when the number of active
logs is not 2.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/file.c    | 2 ++
 fs/f2fs/segment.c | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 46311e7..54722a0 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -132,6 +132,8 @@ static inline bool need_do_checkpoint(struct inode *inode)
 		need_cp = true;
 	else if (test_opt(sbi, FASTBOOT))
 		need_cp = true;
+	else if (sbi->active_logs == 2)
+		need_cp = true;
 
 	return need_cp;
 }
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 2fb3d7f..16721b5d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1090,8 +1090,8 @@ static int __get_segment_type_4(struct page *page, enum page_type p_type)
 		else
 			return CURSEG_COLD_DATA;
 	} else {
-		if (IS_DNODE(page) && !is_cold_node(page))
-			return CURSEG_HOT_NODE;
+		if (IS_DNODE(page) && is_cold_node(page))
+			return CURSEG_WARM_NODE;
 		else
 			return CURSEG_COLD_NODE;
 	}
-- 
2.1.1

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