Re: [RFC PATCH v1 3/6] exfat: use atomic bit ops for volume dirty flag

[Namjae Jeon]

> -static int exfat_set_vol_flags(struct super_block *sb, unsigned short new_flags)
> +static int exfat_sync_vol_flags(struct super_block *sb)
>  {
>         struct exfat_sb_info *sbi = EXFAT_SB(sb);
>         struct boot_sector *p_boot = (struct boot_sector *)sbi->boot_bh->b_data;
>
> -       /* retain persistent-flags */
> -       new_flags |= sbi->vol_flags_persistent;
Please don't remove ->vol_flags_persistent. It prevents pre-existing
volume dirty flags from being lost, but removing it clears a dirty
flag set before mount during normal unmount.