On Thu, 21 Jun 2007, Christoph Lameter wrote: > On Fri, 22 Jun 2007, Hugh Dickins wrote: > > > However... what gives you confidence that flush_dcache_page is > > never applied to other slab pages? > > Flush dcache page is supposed to run on pages not objects of varying > length. It is suprising that this has not lead to earlier problems. > Objects allocated this way may straddle a page boundary under some > conditions and in that case virt_to_page may not lead to a page that > covers the complete object that is supposed to be flushed. Hopefully the > "size" of the allocated object were whole pages.
No, that's the wrong way round. Neither ARM nor PA-RISC expects flush_dcache_page to flush any dcache when given a slab allocation: they just expect it to pass through, not to oops. Hugh - 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/
