On Mon, Aug 19, 2013 at 7:38 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote: > On Fri, Aug 16, 2013 at 04:22:12PM -0700, Andy Lutomirski wrote: >> A fancier implementation could probably avoid an extra journal >> transaction by adding a mapping_test_clear_cmtime call in >> ext4_writepages, but this should already be a considerable >> improvement -- we'll start one transaction per writepages call >> instead of one per page. > > I'd like to see more than just an ext4 implementation - btrfs and > XFS are the other main filesystems that should behave identically. Will do. > > Also, it's worthwhile to write a generic xfstest to ensure that they > all update the timestamp appropriately - if its' in xfstests, then > we can basically guarantee that it won't get randomly regressed in > future, and other filesystems can be easily verified as well sa > their implement this. > Is there a guide to writing an xfstest? I've already written it as a standalone C program, so I assume it's easy. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
