linux-kernel - [PATCH] f2fs: avoid redundant f2fs

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Date:   Sat, 24 Jun 2017 15:57:19 +0800
From:   Yunlong Song <yunlong.song@...wei.com>
To:     <jaegeuk@...nel.org>, <chao@...nel.org>, <yuchao0@...wei.com>,
        <sylinux@....com>, <yunlong.song@...wei.com>
CC:     <miaoxie@...wei.com>, <bintian.wang@...wei.com>,
        <linux-fsdevel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] f2fs: avoid redundant f2fs_flush after remount

create_flush_cmd_control will create redundant issue_flush_thread after each
remount with flush_merge option.

Signed-off-by: Yunlong Song <yunlong.song@...wei.com>
---
 fs/f2fs/segment.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index a6d7738..57f9edc 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -555,6 +555,8 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi)
 
 	if (SM_I(sbi)->fcc_info) {
 		fcc = SM_I(sbi)->fcc_info;
+		if (fcc->f2fs_issue_flush)
+			return err;
 		goto init_thread;
 	}
 
-- 
1.8.5.2