linux-kernel - [PATCH 1/2] f2fs: set CP_TRIMMED

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Date:   Wed, 14 Jun 2017 23:00:55 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 1/2] f2fs: set CP_TRIMMED_FLAG correctly

From: Chao Yu <yuchao0@...wei.com>

Don't set CP_TRIMMED_FLAG for non-zoned block device or discard
unsupported device, it can avoid to trigger unneeded checkpoint for
that kind of device.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 9081570bc616..8e39b850bfc0 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -587,7 +587,7 @@ static void f2fs_put_super(struct super_block *sb)
 	/* be sure to wait for any on-going discard commands */
 	f2fs_wait_discard_bios(sbi);
 
-	if (!sbi->discard_blks) {
+	if (f2fs_discard_en(sbi) && !sbi->discard_blks) {
 		struct cp_control cpc = {
 			.reason = CP_UMOUNT | CP_TRIMMED,
 		};
-- 
2.13.0.90.g1eb437020