On Sat, Jun 09, 2007 at 09:34:36PM +0200, Christian Kujau wrote: > On Sat, 9 Jun 2007, Julio M. Merino Vidal wrote: > >Wouldn't this be better expressed as: > > > > start=$(($start + 8)) > > size=$(($end - $start)) > > > >to avoid invoking a subshell? > > This is certainly possible for lots for scripts, but was not the "scope" > of this patch. ` is not bash-specific and does not break anything.
That's wrong. It will now require "expr" to be present and working on the machine, eventhough it's certainly needed for other parts of the kernel. Also, the remaining function will be considerably slower than what it initially was. If it's called very frequently, it can be a problem. I agree with Julio that if you want to fix the code for its bashism, you should not change its behaviour and stay as much as possible close to what it initially did. Also, beware that the "typeset file=y" did another thing : declare "file" as local to the function. With your change, any global variable called "file" will have its content wiped after a call to this function. You should ensure that it is not used anywhere else, or better, change its name for something less common than "file". Regards, Willy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
