tree 7200946212cf546f4e5fac31db3dc97dbb144300
parent 7be9823491ecbaf9700d7d3502cb4b4dd0ed868a
author Rafael J. Wysocki <rjw@sisk.pl> 1178488243 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1178565179 -0700

swsusp: do not use page flags

Make swsusp use memory bitmaps instead of page flags for marking 'nosave' and
free pages.  This allows us to 'recycle' two page flags that can be used for
other purposes.  Also, the memory needed to store the bitmaps is allocated
when necessary (ie.  before the suspend) and freed after the resume which is
more reasonable.

The patch is designed to minimize the amount of changes and there are some
nice simplifications and optimizations possible on top of it.  I am going to
implement them separately in the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>