On Thu, 26 Apr 2007, Nick Piggin wrote: > > The page cache has no problems supporting things with a block > > size larger then page size. Now the block device layer may not > > have the code to do the scatter gather into small pages and it > > may not handle buffer heads whose data is split between multiple > > pages. > > Yeah, this patch is not really large blocksize support (which we normally > think of as block size > page cache size).
No? It depends on how you define block size. This patch definitely allows a set blocksize function call with a size larger than 4k. > > I suspect what needs to be fixed is the page cache block device > > interface so that we have helper functions that know how to stuff > > a single block into several pages. > > I am working now and again on some code to do this, it is a big job but > I think it is the right way to do it. But it would take a long time to > get stable and supported by filesystems... Ummm... We already have a radix tree for this???? What more is needed? You just need to go through all filesystems and make them use extends. - 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/
