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Rafael J. Wysocki 7ec291833e PM / Hibernate: Fix preallocating of memory 
commit a9c9b4429d upstream.

The hibernate memory preallocation code allocates memory to push some
user space data out of physical RAM, so that the hibernation image is
not too large.  It allocates more memory than necessary for creating
the image, so it has to release some pages to make room for
allocations made while suspending devices and disabling nonboot CPUs,
or the system will hang due to the lack of free pages to allocate
from.  Unfortunately, the function used for freeing these pages,
free_unnecessary_pages(), contains a bug that prevents it from doing
the job on all systems without highmem.

Fix this problem, which is a regression from the 2.6.30 kernel, by
using the right condition for the termination of the loop in
free_unnecessary_pages().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Alan Jenkins <sourcejedi.lkml@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-15 08:49:46 -07:00
..
console.c vt: remove power stuff from kernel/power 2009-09-19 13:13:25 -07:00
hibernate.c PM / Hibernate: Fix blkdev refleaks 2009-11-03 11:01:46 +01:00
hibernate_nvs.c PM/Hibernate: Move NVS routines into a seperate file (v2). 2009-06-12 21:32:33 +02:00
Kconfig PM: Introduce core framework for run-time PM of I/O devices (rev. 17) 2009-08-23 00:04:44 +02:00
main.c PM: Introduce core framework for run-time PM of I/O devices (rev. 17) 2009-08-23 00:04:44 +02:00
Makefile PM/Hibernate: Move NVS routines into a seperate file (v2). 2009-06-12 21:32:33 +02:00
power.h PM/Hibernate: Do not release preallocated memory unnecessarily (rev. 2) 2009-09-14 20:26:58 +02:00
poweroff.c trivial: kernel/power/poweroff.c: whitespace fix 2009-06-12 18:01:46 +02:00
process.c oom: move oom_killer_enable()/oom_killer_disable to where they belong 2009-09-22 07:17:38 -07:00
snapshot.c PM / Hibernate: Fix preallocating of memory 2010-03-15 08:49:46 -07:00
suspend.c PM: Separate suspend to RAM functionality from core 2009-06-12 21:32:33 +02:00
suspend_test.c PM: Make warning in suspend_test_finish() less likely to happen 2009-10-22 08:23:45 +09:00
swap.c PM / Hibernate: Add newline to load_image() fail path 2009-11-03 11:03:09 +01:00
swsusp.c PM/Hibernate: Move NVS routines into a seperate file (v2). 2009-06-12 21:32:33 +02:00
user.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00