Hello, On Thu, Sep 24, 2015 at 08:40:18AM +0000, Dexuan Cui wrote: > I can confirm the patch fixes my "slow write" issue too. > > Tested-by: Dexuan Cui <decui@xxxxxxxxxxxxx> Yeah, this should make it go away w/o using cgroup writeback explicitly; however, I think the proper solution for cgroup writeback is moving bandwidth estimation from memory domain to io domain so that two separate bw estimations wouldn't interfere with each other leading to unexpected outcomes. I'll work on the changes. Thanks. -- tejun -- 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