On Thu, Sep 26, 2013 at 11:14:01AM -0500, Seth Jennings wrote: > On Thu, Sep 26, 2013 at 10:14:28PM +0800, Shaohua Li wrote: > > Hi, > > > > This is a cleancache backend which caches page to disk, usually a SSD. The > > usage model is similar like Windows readyboost. Eg, user plugs a USB drive, > > and we use the USB drive to cache clean pages to reduce IO to hard disks. > > Very interesting! A few thoughts: > > It seems that this is doing at the page level what bcache/dm-cache do at > the block layer. What is the advantage of doing it this way? That's true. It's only helpful for case of temporary caching. If a SSD is dedicated for caching, bcache/dm-cache is always generic. Thanks, Shaohua -- 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>