> the problem is that the pay elsewhere is far more spread out, but not > less. At least generally.... > > I can see the point of a copy_from_user_nocache() or something, for > those cases where we *know* we are not going to use the copied data in > the cpu (but say, only do DMA). > But that should be explicit, not implicit, since the general case will > be that the kernel WILL use the data.
Most of the callers probably want the normal one, but most of the copied data (buffered filesystem I/O) will want the non cache poluting one. So yes, doing this explicit makes a lot of sense. - 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/
