On Fri 08-01-21 23:58:55, Eric Biggers wrote:
> From: Eric Biggers <[email protected]>
> 
> As was done for generic_update_time(), only pass I_DIRTY_TIME to
> __mark_inode_dirty() when the inode's timestamps were actually updated
> and lazytime is enabled.  This avoids a weird edge case where
> I_DIRTY_TIME could be set in i_state when lazytime isn't enabled.
> 
> Signed-off-by: Eric Biggers <[email protected]>

Looks good to me. You can add:

Reviewed-by: Jan Kara <[email protected]>

                                                                Honza

> ---
>  fs/fat/misc.c | 23 ++++++++++++-----------
>  1 file changed, 12 insertions(+), 11 deletions(-)
> 
> diff --git a/fs/fat/misc.c b/fs/fat/misc.c
> index f1b2a1fc2a6a4..18a50a46b57f8 100644
> --- a/fs/fat/misc.c
> +++ b/fs/fat/misc.c
> @@ -329,22 +329,23 @@ EXPORT_SYMBOL_GPL(fat_truncate_time);
>  
>  int fat_update_time(struct inode *inode, struct timespec64 *now, int flags)
>  {
> -     int iflags = I_DIRTY_TIME;
> -     bool dirty = false;
> +     int dirty_flags = 0;
>  
>       if (inode->i_ino == MSDOS_ROOT_INO)
>               return 0;
>  
> -     fat_truncate_time(inode, now, flags);
> -     if (flags & S_VERSION)
> -             dirty = inode_maybe_inc_iversion(inode, false);
> -     if ((flags & (S_ATIME | S_CTIME | S_MTIME)) &&
> -         !(inode->i_sb->s_flags & SB_LAZYTIME))
> -             dirty = true;
> +     if (flags & (S_ATIME | S_CTIME | S_MTIME)) {
> +             fat_truncate_time(inode, now, flags);
> +             if (inode->i_sb->s_flags & SB_LAZYTIME)
> +                     dirty_flags |= I_DIRTY_TIME;
> +             else
> +                     dirty_flags |= I_DIRTY_SYNC;
> +     }
> +
> +     if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false))
> +             dirty_flags |= I_DIRTY_SYNC;
>  
> -     if (dirty)
> -             iflags |= I_DIRTY_SYNC;
> -     __mark_inode_dirty(inode, iflags);
> +     __mark_inode_dirty(inode, dirty_flags);
>       return 0;
>  }
>  EXPORT_SYMBOL_GPL(fat_update_time);
> -- 
> 2.30.0
> 
-- 
Jan Kara <[email protected]>
SUSE Labs, CR


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