linux-kernel - [PATCH 2/3] f2fs: provide more chance to get node ssr

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Date:   Wed, 22 Feb 2017 20:50:50 +0800
From:   Yunlong Song <yunlong.song@...wei.com>
To:     <jaegeuk@...nel.org>, <cm224.lee@...sung.com>,
        <yuchao0@...wei.com>, <chao@...nel.org>, <sylinux@....com>,
        <yunlong.song@...wei.com>, <miaoxie@...wei.com>
CC:     <bintian.wang@...wei.com>, <linux-fsdevel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] f2fs: provide more chance to get node ssr

Signed-off-by: Yunlong Song <yunlong.song@...wei.com>
---
 fs/f2fs/segment.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 80997f5..9d13743 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1541,9 +1541,13 @@ static int get_ssr_segment(struct f2fs_sb_info *sbi, int type)
 	struct curseg_info *curseg = CURSEG_I(sbi, type);
 	const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
 
-	if (IS_NODESEG(type))
-		return v_ops->get_victim(sbi,
-				&(curseg)->next_segno, BG_GC, type, SSR);
+	if (IS_NODESEG(type)) {
+		for (; type >= CURSEG_HOT_NODE; type--)
+			if (v_ops->get_victim(sbi, &(curseg)->next_segno,
+							BG_GC, type, SSR))
+				return 1;
+		return 0;
+	}
 
 	/* For data segments, let's do SSR more intensively */
 	for (; type >= CURSEG_HOT_DATA; type--)
-- 
1.8.5.2