On Sat 2014-07-12 01:22:04, Dmitry Kasatkin wrote: > On 11 July 2014 23:10, Pavel Machek <pavel@xxxxxx> wrote: > > On Wed 2014-07-02 11:40:50, Christoph Hellwig wrote: > >> On Wed, Jul 02, 2014 at 11:55:41AM -0400, Jeff Moyer wrote: > >> > It's acceptable. > >> > >> It's not because it will then also affect other reads going on at the > >> same time. > >> > >> The whole concept of ima is just broken, and if you want to do these > >> sort of verification they need to happen inside the filesystem and not > >> above it. > > > > ...and doing it at filesystem layer would also permit verification of > > per-block (64KB? 1MB?) hashes. > > Please design one single and the best universal filesystem which > does it. Given the overhead whole-file hashing has, you don't need single best operating system. All you need it either ext4 or btrfs.. depending on when you want it in production. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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>