On Thu, 23 Jan 2014, James Bottomley wrote: > If the compound page infrastructure exists today and is usable for this, > what else do we need to do? ... because if it's a couple of trivial > changes and a few minor patches to filesystems to take advantage of it, > we might as well do it anyway. I was only objecting on the grounds that > the last time we looked at it, it was major VM surgery. Can someone > give a summary of how far we are away from being able to do this with > the VM system today and what extra work is needed (and how big is this > piece of work)? The main problem for me was the page cache. The VM would not be such a problem. Changing the page cache function required updates to many filesystems. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>