Messages in this thread | | | Subject | Re: [RFC][PATCH 2/9] deadlock prevention core | From | Peter Zijlstra <> | Date | Mon, 14 Aug 2006 07:03:55 +0200 |
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On Sun, 2006-08-13 at 21:58 -0700, Andrew Morton wrote: > On Mon, 14 Aug 2006 06:40:53 +0200 > Peter Zijlstra <a.p.zijlstra@chello.nl> wrote: > > > Testcase: > > > > Mount an NBD device as sole swap device and mmap > physical RAM, then > > loop through touching pages only once. > > Fix: don't try to swap over the network. Yes, there may be some scenarios > where people have no local storage, but it's reasonable to expect anyone > who is using Linux as an "enterprise storage platform" to stick a local > disk on the thing for swap.
I wish you were right, however there seems to be a large demand to go diskless and swap over iSCSI because disks seem to be the nr. 1 failing piece of hardware in systems these days.
> That leaves MAP_SHARED, but mm-tracking-shared-dirty-pages.patch will fix > that, will it not?
Will makes it less likely. One can still have memory pressure, the remaining bits of memory can still get stuck in socket queues for blocked processes.
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