linux.git/kernel/power/swsusp.c, branch v2.6.18

Revert "swsusp special saveable pages support" commits

2006-06-26T01:41:00+00:00

This reverts commits

  3e3318dee0878d42ed62a19c292a2ac284135db3 [PATCH] swsusp: x86_64 mark special saveable/unsaveable pages
  b6370d96e09944c6e3ae8d5743ca8a8ab1f79f6c [PATCH] swsusp: i386 mark special saveable/unsaveable pages
  ce4ab0012b32c1a4a1d6e934aeb73bf3151c48d9 [PATCH] swsusp: add architecture special saveable pages support

because not only do they apparently cause page faults on x86, the
infrastructure doesn't compile on powerpc.

Signed-off-by: Linus Torvalds

[PATCH] swsusp: take lowmem reserves into account

2006-06-23T14:42:59+00:00

swsusp allocates memory from the normal zone, so it cannot use lowmem
reserve pages from the lower zones.  Therefore it should not count these
pages as available to it.

Signed-off-by: Rafael J. Wysocki 
Cc: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: add architecture special saveable pages support

2006-06-23T14:42:59+00:00

1. Add architecture specific pages save/restore support.  Next two patches
   will use this to save/restore 'ACPI NVS' pages.

2. Allow reserved pages 'nosave'.  This could avoid save/restore BIOS
   reserved pages.

Signed-off-by: Shaohua Li 
Cc: Pavel Machek 
Cc: "Rafael J. Wysocki" 
Cc: Nigel Cunningham 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: rework memory shrinker

2006-06-23T14:42:48+00:00

Rework the swsusp's memory shrinker in the following way:

- Simplify balance_pgdat() by removing all of the swsusp-related code
  from it.

- Make shrink_all_memory() use shrink_slab() and a new function
  shrink_all_zones() which calls shrink_active_list() and
  shrink_inactive_list() directly for each zone in a way that's optimized
  for suspend.

In shrink_all_memory() we try to free exactly as many pages as the caller
asks for, preferably in one shot, starting from easier targets.   If slab
caches are huge, they are most likely to have enough pages to reclaim.
 The inactive lists are next (the zones with more inactive pages go first)
etc.

Each time shrink_all_memory() attempts to shrink the active and inactive
lists for each zone in 5 passes.   In the first pass, only the inactive
lists are taken into consideration.   In the next two passes the active
lists are also shrunk, but mapped pages are not reclaimed.   In the last
two passes the active and inactive lists are shrunk and mapped pages are
reclaimed as well.  The aim of this is to alter the reclaim logic to choose
the best pages to keep on resume and improve the responsiveness of the
resumed system.

Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Con Kolivas 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: separate swap-writing/reading code

2006-03-23T15:38:07+00:00

Move the swap-writing/reading code of swsusp to a separate file.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: low level interface

2006-03-23T15:38:07+00:00

Introduce the low level interface that can be used for handling the
snapshot of the system memory by the in-kernel swap-writing/reading code of
swsusp and the userland interface code (to be introduced shortly).

Also change the way in which swsusp records the allocated swap pages and,
consequently, simplifies the in-kernel swap-writing/reading code (this is
necessary for the userland interface too).  To this end, it introduces two
helper functions in mm/swapfile.c, so that the swsusp code does not refer
directly to the swap internals.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] revert "swsusp: fix breakage with swap on lvm"

2006-03-23T15:38:07+00:00

This was a temporary thing for 2.6.16.

Cc: "Rafael J. Wysocki" 
Cc: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: fix breakage with swap on LVM

2006-02-17T21:59:27+00:00

Restore the compatibility with the older code and make it possible to
suspend if the kernel command line doesn't contain the "resume=" argument

Signed-off-by: Rafael J. Wysocki 
Cc: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: kill unneeded/unbalanced bio_get

2006-02-08T00:12:31+00:00

- Remove unneeded bio_get() which would cause a bio leak

- Writing doesn't dirty pages.  Reading dirties pages.

- We should dirty the pages after the IO completion, not before

(Busy-waiting for disk I/O completion isn't very polite.)

Signed-off-by: Pavel Machek 
Cc: "Rafael J. Wysocki" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] swsusp: use bytes as image size units

2006-02-01T16:53:12+00:00

Make swsusp use bytes as the image size units, which is needed for future
compatibility.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds