On Tuesday 30 October 2007, Jörn Engel wrote: > On Tue, 30 October 2007 23:19:48 +0900, Dongjun Shin wrote: > > On 10/30/07, Arnd Bergmann <arnd@xxxxxxxx> wrote: > > > > > > Not sure. Why shouldn't you be able to reorder the hints provided that > > > they don't overlap with read/write bios for the same block? > > > > You're right. The bios can be reordered if they don't overlap with hint. > > I would keep things simpler. Bios can be reordered, full stop. If an > erase and a write overlap, the caller (filesystem?) has to add a > barrier. I thought bios were already ordered if they affect the same blocks. Either way, I agree that an erase should not be treated special on the bio layer, its ordering should be handled the same way we do it for writes. Arnd <>< - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
