linux-kernel - [PATCH] f2fs: no need to create issue_discard

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Message-ID: <1499339134-104480-1-git-send-email-yunlong.song@huawei.com>
Date:   Thu, 6 Jul 2017 19:05:34 +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: no need to create issue_discard_thread if it exists

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 4c246e3..b48d004 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1417,6 +1417,8 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
 
 	if (SM_I(sbi)->dcc_info) {
 		dcc = SM_I(sbi)->dcc_info;
+		if (dcc->f2fs_issue_discard)
+			return err;
 		goto init_thread;
 	}
 
-- 
1.8.5.2