[PATCH 1/2] f2fs: don't start checkpoint thread in readonly mountpoint

[Chao Yu]

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 <yuch...@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