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From: Chao Yu <yuchao0@huawei.com>
To: <jaegeuk@kernel.org>
Cc: <linux-f2fs-devel@lists.sourceforge.net>,
	<linux-kernel@vger.kernel.org>, <chao@kernel.org>,
	Chao Yu <yuchao0@huawei.com>
Subject: [PATCH 1/2] f2fs: don't start checkpoint thread in readonly mountpoint
Date: Wed, 17 Mar 2021 17:56:03 +0800	[thread overview]
Message-ID: <20210317095604.125820-1-yuchao0@huawei.com> (raw)

In readonly mountpoint, there should be no write IOs include checkpoint
IO, so that it's not needed to create kernel checkpoint thread.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/super.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ce88db0170fa..6716af216dca 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2091,8 +2091,10 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 		}
 	}
 
-	if (!test_opt(sbi, DISABLE_CHECKPOINT) &&
-			test_opt(sbi, MERGE_CHECKPOINT)) {
+	if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
+			!test_opt(sbi, MERGE_CHECKPOINT)) {
+		f2fs_stop_ckpt_thread(sbi);
+	} else {
 		err = f2fs_start_ckpt_thread(sbi);
 		if (err) {
 			f2fs_err(sbi,
@@ -2100,8 +2102,6 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 			    err);
 			goto restore_gc;
 		}
-	} else {
-		f2fs_stop_ckpt_thread(sbi);
 	}
 
 	/*
@@ -3857,7 +3857,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 
 	/* setup checkpoint request control and start checkpoint issue thread */
 	f2fs_init_ckpt_req_control(sbi);
-	if (!test_opt(sbi, DISABLE_CHECKPOINT) &&
+	if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
 			test_opt(sbi, MERGE_CHECKPOINT)) {
 		err = f2fs_start_ckpt_thread(sbi);
 		if (err) {
-- 
2.29.2


WARNING: multiple messages have this Message-ID (diff)
From: Chao Yu <yuchao0@huawei.com>
To: <jaegeuk@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH 1/2] f2fs: don't start checkpoint thread in readonly mountpoint
Date: Wed, 17 Mar 2021 17:56:03 +0800	[thread overview]
Message-ID: <20210317095604.125820-1-yuchao0@huawei.com> (raw)

In readonly mountpoint, there should be no write IOs include checkpoint
IO, so that it's not needed to create kernel checkpoint thread.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/super.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ce88db0170fa..6716af216dca 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2091,8 +2091,10 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 		}
 	}
 
-	if (!test_opt(sbi, DISABLE_CHECKPOINT) &&
-			test_opt(sbi, MERGE_CHECKPOINT)) {
+	if ((*flags & SB_RDONLY) || test_opt(sbi, DISABLE_CHECKPOINT) ||
+			!test_opt(sbi, MERGE_CHECKPOINT)) {
+		f2fs_stop_ckpt_thread(sbi);
+	} else {
 		err = f2fs_start_ckpt_thread(sbi);
 		if (err) {
 			f2fs_err(sbi,
@@ -2100,8 +2102,6 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 			    err);
 			goto restore_gc;
 		}
-	} else {
-		f2fs_stop_ckpt_thread(sbi);
 	}
 
 	/*
@@ -3857,7 +3857,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 
 	/* setup checkpoint request control and start checkpoint issue thread */
 	f2fs_init_ckpt_req_control(sbi);
-	if (!test_opt(sbi, DISABLE_CHECKPOINT) &&
+	if (!f2fs_readonly(sb) && !test_opt(sbi, DISABLE_CHECKPOINT) &&
 			test_opt(sbi, MERGE_CHECKPOINT)) {
 		err = f2fs_start_ckpt_thread(sbi);
 		if (err) {
-- 
2.29.2



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

             reply	other threads:[~2021-03-17  9:57 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-17  9:56 Chao Yu [this message]
2021-03-17  9:56 ` [f2fs-dev] [PATCH 1/2] f2fs: don't start checkpoint thread in readonly mountpoint Chao Yu
2021-03-17  9:56 ` [PATCH 2/2] f2fs: fix error path of f2fs_remount() Chao Yu
2021-03-17  9:56   ` [f2fs-dev] " Chao Yu
2021-03-24  2:19   ` Chao Yu
2021-03-24  2:19     ` [f2fs-dev] " Chao Yu

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