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| author |   Dan Magenheimer <dan.magenheimer@oracle.com> | 2011-05-26 10:02:21 -0600 |
|---|---|---|
| committer | Dan Magenheimer <dan.magenheimer@oracle.com> | 2011-05-26 10:02:21 -0600 |
| commit | 5bc20fc59706214d9591c11e1938a629d3538c12 (patch) | |
| tree | ebfb66428ce888560dd982d3ca313f039a53ae40 /mm | |
| parent | ocfs2: add cleancache support (diff) | |
| download | linux-dev-5bc20fc59706214d9591c11e1938a629d3538c12.tar.xz linux-dev-5bc20fc59706214d9591c11e1938a629d3538c12.zip | |
xen: cleancache shim to Xen Transcendent Memory
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 <dan.magenheimer@oracle.com>
Reviewed-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rik Van Riel <riel@redhat.com>
Cc: Jan Beulich <JBeulich@novell.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Andreas Dilger <adilger@sun.com>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <joel.becker@oracle.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions