On Tue, Oct 23 2007, Linus Torvalds wrote: > My biggest complaint right now is that a lot of users of the sg *filling* > functions were mindlessly converted, so we have code like > > cryptoloop.c: sg_set_page(&sg_in, in_page); > cryptoloop.c: sg_in.offset = in_offs; > cryptoloop.c: sg_in.length = sz; > > which is just really stupid, and we should have a function for that. But > worse is code like this: > > ub.c: sg_set_page(sg, virt_to_page(sc->top_sense)); > ub.c: sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1); > ub.c: sg->length = UB_SENSE_SIZE; > > which again was converted "line by line" and we actually *do* have a > function to do the above three lines as > > sg_set_buf(sg, sc->top_sense, UB_SENSE_SIZE); > > where that *single* line is just tons shorter but more importantly, more > readable, than the mess that is a brute-force conversion.
I modified sg_set_page() to take a length and offset argument, and converted these silly sg_set_page(.., virt_to_page(foo)) to just use sg_set_buf() instead: 30 files changed, 93 insertions(+), 152 deletions(-) and it's definitely a win. Added to the pending bits... -- Jens Axboe - 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/
