Re: [GIT PULL] overlayfs update for 4.8

From: Miklos Szeredi
Date: Fri Jul 29 2016 - 16:00:19 EST

On Fri, Jul 29, 2016 at 9:26 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Jul 29, 2016 at 4:20 AM, Miklos Szeredi <miklos@xxxxxxxxxx> wrote:
>> First of all, this fixes a regression in overlayfs introduced by the dentry hash
>> salting. I've moved the patch fixing this to the front of the queue, so if (god
>> forbid) something needs to be bisected in overlayfs this regression won't
>> interfere with that.
> Thanks, I had missed that completely, and while I build overlayfs for
> testing, I don't have any actual tests of it.

If you want a quick overlayfs test, do "mkdir -p /lower /upper; ./run --ov" from


It takes 17sec on my laptop.