[PATCH 00/20] vm deadlock avoidance for NFS, NBD and iSCSI (take 7)

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Yet another instance of my networked swap patches.

The patch-set consists of four parts:

 - patches 1-2; the basic 'framework' for deadlock avoidance
 - patches 3-9; implement swap over NFS
 - patches 10-13; implement swap over NBD
 - patches 14-20; implement swap over iSCSI

The iSCSI work depends on their .19 tree and does need some more work,
but does work in its current state.

As stated in previous posts, NFS and iSCSI survive service failures and
reconnect properly during heavy swapping.

Linus, when I mentioned swap over network to you in Ottawa, you said it was
a valid use case, that people actually do and want this. Can you agree with
the approach taken in these patches?

Peter

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• Follow-Ups:
  • Re: [PATCH 00/20] vm deadlock avoidance for NFS, NBD and iSCSI (take 7)
    • From: Linus Torvalds <[email protected]>
  • [PATCH 05/20] uml: rename arch/um remove_mapping()
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 07/20] nfs: add a comment explaining the use of PG_private in the NFS client
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 01/20] mm: serialize access to min_free_kbytes
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 06/20] nfs: teach the NFS client how to treat PG_swapcache pages
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 11/20] nbd: request_fn fixup
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 15/20] iscsi: kernel side tcp connect
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 13/20] nbd: use swapdev hook to make swap deadlock free
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 18/20] netlink: add SOCK_VMIO support to AF_NETLINK
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 17/20] scsi: propagate the swapdev hook into the scsi stack
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 14/20] uml: enable scsi and add iscsi config
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 10/20] mm: block device swap notification
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 09/20] nfs: make swap on NFS robust
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 16/20] iscsi: add session context to ep_connect
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 19/20] mm: a process flags to avoid blocking allocations
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 12/20] nbd: limit blk_queue
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 08/20] nfs: enable swap on NFS
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 04/20] mm: methods for teaching filesystems about PG_swapcache pages
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 03/20] mm: add support for non block device backed swap files
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 20/20] iscsi: support for swapping over iSCSI.
    • From: Peter Zijlstra <[email protected]>
  • [PATCH 02/20] net: vm deadlock avoidance core
    • From: Peter Zijlstra <[email protected]>

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