On 11 Apr 2007 00:56:51 +0200 Andi Kleen <[EMAIL PROTECTED]> wrote: > Jan Kara <[EMAIL PROTECTED]> writes: > > > Hello! > > > > In thread http://lkml.org/lkml/2007/3/9/403, we discussed a problem > > with the current heuristic for detecting sequential IO in > > do_generic_mapping_read() - for small files a page is marked as accessed > > only once which can cause a performance problems. > > Attached is a patch that improves the heuristic by introducing a > > ra.offset variable so now we can reliably detect sequetial reads. > > The patch replaces Nick's patch from http://lkml.org/lkml/2007/3/15/177 > > (Nick has acked to replace the patch). Could you please put the patch > > into -mm? > > There's a much more complete patchkit for this that gets reposted > regularly on l-k. Perhaps it would make sense to test that first?
adaptive readahead? Has been in -mm for a year. Problem is, it is _so_ complete that I just don't know how to merge it. It's huge, and only Wu understands it. So it's really rather stuck. - 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/
