Hi Jaegeuk,

On 2021/6/23 16:09, Jaegeuk Kim wrote:
Hi Chao,

I'll remove this patch, since it breaks checkpoint=disable and recovery
flow that check SB_ACTIVE.

Oh, sorry, is it due to changes in f2fs_disable_checkpoint()?

So how about testing with changes f2fs_recover_orphan_inodes() and
f2fs_recover_fsync_data()?

Thanks,


Thanks,

On 05/25, Chao Yu wrote:
Quoted from [1]

"I do remember that I've added this code back then because otherwise
orphan cleanup was losing updates to quota files. But you're right
that now I don't see how that could be happening and it would be nice
if we could get rid of this hack"

[1] 
https://lore.kernel.org/linux-ext4/[email protected]/T/#m04990cfbc4f44592421736b504afcc346b2a7c00

Related fix in ext4 by
commit 72ffb49a7b62 ("ext4: do not set SB_ACTIVE in ext4_orphan_cleanup()").

f2fs has the same hack implementation in
- f2fs_recover_orphan_inodes()
- f2fs_recover_fsync_data()
- f2fs_disable_checkpoint()

Let's get rid of this hack as well in f2fs.

Cc: Zhang Yi <[email protected]>
Cc: Jan Kara <[email protected]>
Signed-off-by: Chao Yu <[email protected]>
---
  fs/f2fs/checkpoint.c |  3 ---
  fs/f2fs/recovery.c   |  8 ++------
  fs/f2fs/super.c      | 11 ++++-------
  3 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 6c208108d69c..a578c7d13d81 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -691,9 +691,6 @@ int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
        }
#ifdef CONFIG_QUOTA
-       /* Needed for iput() to work correctly and not trash data */
-       sbi->sb->s_flags |= SB_ACTIVE;
-
        /*
         * Turn on quotas which were not enabled for read-only mounts if
         * filesystem has quota feature, so that they are updated correctly.
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 4b2f7d1d5bf4..4cfe36fa41be 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -782,8 +782,6 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool 
check_only)
        }
#ifdef CONFIG_QUOTA
-       /* Needed for iput() to work correctly and not trash data */
-       sbi->sb->s_flags |= SB_ACTIVE;
        /* Turn on quotas so that they are updated correctly */
        quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY);
  #endif
@@ -811,10 +809,8 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool 
check_only)
        err = recover_data(sbi, &inode_list, &tmp_inode_list, &dir_list);
        if (!err)
                f2fs_bug_on(sbi, !list_empty(&inode_list));
-       else {
-               /* restore s_flags to let iput() trash data */
-               sbi->sb->s_flags = s_flags;
-       }
+       else
+               f2fs_bug_on(sbi, sbi->sb->s_flags & SB_ACTIVE);
  skip:
        fix_curseg_write_pointer = !check_only || list_empty(&inode_list);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 0a77808ebb8f..e7bd983fbddc 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1881,17 +1881,15 @@ static int f2fs_enable_quotas(struct super_block *sb);
static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
  {
-       unsigned int s_flags = sbi->sb->s_flags;
        struct cp_control cpc;
        int err = 0;
        int ret;
        block_t unusable;
- if (s_flags & SB_RDONLY) {
+       if (sbi->sb->s_flags & SB_RDONLY) {
                f2fs_err(sbi, "checkpoint=disable on readonly fs");
                return -EINVAL;
        }
-       sbi->sb->s_flags |= SB_ACTIVE;
f2fs_update_time(sbi, DISABLE_TIME); @@ -1909,13 +1907,13 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi)
        ret = sync_filesystem(sbi->sb);
        if (ret || err) {
                err = ret ? ret : err;
-               goto restore_flag;
+               goto out;
        }
unusable = f2fs_get_unusable_blocks(sbi);
        if (f2fs_disable_cp_again(sbi, unusable)) {
                err = -EAGAIN;
-               goto restore_flag;
+               goto out;
        }
down_write(&sbi->gc_lock);
@@ -1931,8 +1929,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info 
*sbi)
out_unlock:
        up_write(&sbi->gc_lock);
-restore_flag:
-       sbi->sb->s_flags = s_flags;       /* Restore SB_RDONLY status */
+out:
        return err;
  }
--
2.29.2


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