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Linus Torvalds a3fe778c78 Frontswap provides a "transcendent memory" interface for swap pages. 
In some environments, dramatic performance savings may be obtained because
 swapped pages are saved in RAM (or a RAM-like device) instead of a swap disk.
 This tag provides the basic infrastructure along with some changes to the
 existing backends.
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Merge tag 'stable/frontswap.v16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mm

Pull frontswap feature from Konrad Rzeszutek Wilk:
 "Frontswap provides a "transcendent memory" interface for swap pages.
  In some environments, dramatic performance savings may be obtained
  because swapped pages are saved in RAM (or a RAM-like device) instead
  of a swap disk.  This tag provides the basic infrastructure along with
  some changes to the existing backends."

Fix up trivial conflict in mm/Makefile due to removal of swap token code
changing a line next to the new frontswap entry.

This pull request came in before the merge window even opened, it got
delayed to after the merge window by me just wanting to make sure it had
actual users.  Apparently IBM is using this on their embedded side, and
Jan Beulich says that it's already made available for SLES and OpenSUSE
users.

Also acked by Rik van Riel, and Konrad points to other people liking it
too.  So in it goes.

By Dan Magenheimer (4) and Konrad Rzeszutek Wilk (2)
via Konrad Rzeszutek Wilk
* tag 'stable/frontswap.v16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/mm:
  frontswap: s/put_page/store/g s/get_page/load
  MAINTAINER: Add myself for the frontswap API
  mm: frontswap: config and doc files
  mm: frontswap: core frontswap functionality
  mm: frontswap: core swap subsystem hooks and headers
  mm: frontswap: add frontswap header file
2012-06-04 12:28:45 -07:00
..
.gitignore Documentation/vm/.gitignore: add page-types 2009-09-24 07:20:57 -07:00
00-INDEX slub: doc: update the slabinfo.c file path 2011-08-31 20:10:17 +03:00
active_mm.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
balance page allocator: use allocation flags as an index to the zone watermark 2009-06-16 19:47:35 -07:00
cleancache.txt Cleanups: rename of flush to invalidate, moving reporting of statistics 2012-03-22 19:52:47 -07:00
frontswap.txt frontswap: s/put_page/store/g s/get_page/load 2012-05-15 11:34:08 -04:00
highmem.txt mm: highmem documentation 2010-10-26 16:52:08 -07:00
hugetlbpage.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
hwpoison.txt Documentation: update cgroupfs mount point 2011-06-15 21:52:50 -07:00
ksm.txt ksm: remove unswappable max_kernel_pages 2009-12-15 08:53:20 -08:00
locking mm: Convert i_mmap_lock to a mutex 2011-05-25 08:39:18 -07:00
numa doc: fix broken references 2011-09-27 18:08:04 +02:00
numa_memory_policy.txt Doc: Fix typo s/packages/packaged 2010-09-21 17:03:27 +02:00
overcommit-accounting Fix common misspellings 2011-03-31 11:26:23 -03:00
page_migration
pagemap.txt proc: report file/anon bit in /proc/pid/pagemap 2012-05-31 17:49:29 -07:00
slub.txt Documentations: Fix slabinfo.c directory in vm/slub.txt 2012-05-10 11:45:23 +03:00
transhuge.txt mm: document the meminfo and vmstat fields of relevance to transparent hugepages 2012-05-29 16:22:23 -07:00
unevictable-lru.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00