18 Jun, 2011

1 commit

• afec6e049   xen: prepare tmem shim to handle frontswap ... Browse Code »

  Provide the shim code for frontswap for Xen tmem even if the
  frontswap patchset is not present yet. (The egg is before
  the chicken.)

  Signed-off-by: Dan Magenheimer
  Reviewed-by: Konrad Wilk

  Dan Magenheimer

  2011-06-18 05:06:20 +0800  

27 May, 2011

1 commit

• 5bc20fc59   xen: cleancache shim to Xen Transcendent Memory ... Browse Code »

  This patch provides a shim between the kernel-internal cleancache
  API (see Documentation/mm/cleancache.txt) and the Xen Transcendent
  Memory ABI (see http://oss.oracle.com/projects/tmem).

  Xen tmem provides "hypervisor RAM" as an ephemeral page-oriented
  pseudo-RAM store for cleancache pages, shared cleancache pages,
  and frontswap pages. Tmem provides enterprise-quality concurrency,
  full save/restore and live migration support, compression
  and deduplication.

  A presentation showing up to 8% faster performance and up to 52%
  reduction in sectors read on a kernel compile workload, despite
  aggressive in-kernel page reclamation ("self-ballooning") can be
  found at:

  http://oss.oracle.com/projects/tmem/dist/documentation/presentations/TranscendentMemoryXenSummit2010.pdf

  Signed-off-by: Dan Magenheimer
  Reviewed-by: Jeremy Fitzhardinge
  Cc: Konrad Rzeszutek Wilk
  Cc: Matthew Wilcox
  Cc: Nick Piggin
  Cc: Mel Gorman
  Cc: Rik Van Riel
  Cc: Jan Beulich
  Cc: Chris Mason
  Cc: Andreas Dilger
  Cc: Ted Ts'o
  Cc: Mark Fasheh
  Cc: Joel Becker
  Cc: Nitin Gupta

  Dan Magenheimer

  2011-05-27 00:02:21 +0800