Re: Alignment of bitmaps for ext2_set_bit et al.

[Olof Johansson]

Andrew Morton wrote:

> Paul Mackerras <paulus@xxxxxxxxx> wrote:
>  
>
> > Olof has made a patch that uses atomics for these on ppc64 rather than
> > locking and unlocking a lock, but it will only work correctly if the
> > bitmap is always 8-byte aligned.
> >    
>
> Sounds sane, as long as you get firmly notified when a poorly-aligned
> address is fed in.
>  
The notification is in the form of an unalignment trap resulting in a 
panic, is that firm enough? :-)


-Olof
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/