Re: [RFC] page fault retry with NOPAGE_RETRY

> So I think there's a nasty DoS here if we permit infinite retries.  But
> it's not just that - there might be other situations under really heavy
> memory pressure where livelocks like this can occur.  It's just a general
> robustness-of-implementation issue.

Got it. Now, changing args to no_page() will be a pretty big task....

Ben.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>

• References:
  • [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Mike Waychison <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Benjamin Herrenschmidt <[email protected]>
  • Re: [RFC] page fault retry with NOPAGE_RETRY
    • From: Andrew Morton <[email protected]>

• Prev by Date: [patch 2/2] sched: cleanup sched_group cpu_power setup
• Next by Date: Re: [PATCH 2.6.18] [TRIVIAL] Spelling fixes in Documentation/DocBook
• Previous by thread: Re: [RFC] page fault retry with NOPAGE_RETRY
• Next by thread: Re: [RFC] page fault retry with NOPAGE_RETRY
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]