Hi Julia, On Wed, Jun 4, 2014 at 1:00 PM, Julia Lawall <julia.law...@lip6.fr> wrote: > OK, thanks. I was only looking at the C code. > > But the C code contains a loop that is followed by: > > if (!size) > return result; > tmp = *p; > > found_first: > tmp |= ~0UL << size; > if (tmp == ~0UL) /* Are any bits zero? */ > return result + size; /* Nope. */ > > In the first return, it would seem that result == size. Could the second > one be changed to just return size? It should not hurt performance.
"size" may have been changed between function entry and this line. So you have to store it in a temporary. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html