On Mon, Nov 7, 2016 at 10:58 AM, Konstantin Khlebnikov <koct9i@xxxxxxxxx> wrote: > I've stumbled on somehow related problem - concurrent copy-ups are > strictly serialized by rename locks. > Obviously, file copying could be done in parallel: locks are required > only for final rename. > Because of that overlay slower that aufs for some workloads. Easy to fix: for each copy up create a separate subdir of "work". Then the contention is only for the time of creating the subdir, which is very short. Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html