Re: [PATCH][FAT] FAT dirent scan with hin take #2

[Vojtech Pavlik <vojtech@suse.cz>]

On Tue, Aug 30, 2005 at 11:55:46AM +0300, Pekka Enberg wrote:
> Hi,
> 
> Some more.
> 
> On 8/30/05, Machida, Hiroyuki <machida@sm.sony.co.jp> wrote:
> > --- old/fs/fat/inode.c  2005-08-29 09:38:53.308587787 +0900
> > +++ new/fs/fat/inode.c  2005-08-29 09:39:33.889555606 +0900
> > @@ -345,6 +347,15 @@ static void fat_delete_inode(struct inod
> >  static void fat_clear_inode(struct inode *inode)
> >  {
> >         struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
> > +       void *hints;
> > +
> > +       down(&(MSDOS_I(inode)->scan_lock);
> > +       hints = (void *)(MSDOS_I(inode)->scan_hints);
> > +       if (hints) {
> > +               MSDOS_I(inode)->scan_hints = 0;
> > +       }
> > +       up(&(MSDOS_I(inode)->scan_lock);
> > +       if (hints) kfree(hints);
> 
> Please just make the local variable hints of type loff_t * to get rid
> of the pointless casting.

For voids no casting is needed anyway, the type exists for the very
reason of being compatible with any other.

> >         if (is_bad_inode(inode))
> >                 return;
> > @@ -1011,6 +1022,8 @@ static int fat_read_root(struct inode *i
> >         struct msdos_sb_info *sbi = MSDOS_SB(sb);
> >         int error;
> > 
> > +       init_MUTEX(&(MSDOS_I(inode)->scan_lock);
> > +       MSDOS_I(inode)->scan_hints = 0;
> 
> Use NULLs instead of 0 for pointers to keep new code sparse-clean.
 
It's a good idea for readability, too.

-- 
Vojtech Pavlik
SuSE Labs, SuSE CR