Re: [fuse-devel] [PATCH 0/4] FUSE tunables

[Jan E. <je...@co...>]

On Jul 12 2007 12:43, Miklos Szeredi wrote:
>
>The max background limit was added to make sure that an unprivileged
>user won't be able to exhaust all kernel memory by accumulating a
>limitless amount of background requests.
>
>It's probably not easy to actually exploit this, and maybe it's just
>paranoia, but this was the simplest way to deal with this problem.
>
>I see two options:
>
>  1) make this option privileged
>
>  2) think through, why allowing an unlimited number of background
>     requests is not going to be a problem in practice

3) allow the user to set it within a given range, enforce superuser after
passing the limits.

>> 2) thread_stack (-o thread_stack=N): minimum stack allocated for each 
>> thread. Library option, previously system default (8MB starts being an 
>> issue with a couple hundred concurrent requests).

Interesting, because I thought a pthread's stack is 2 MB only on x86.
(On a side note, trying to figure out gives strange results.)


	Jan
===