linux/include
Rafael J. Wysocki 53e87163a1 PM / Hibernate: Fix memory corruption related to swap
commit c9e664f1fd upstream.

There is a problem that swap pages allocated before the creation of
a hibernation image can be released and used for storing the contents
of different memory pages while the image is being saved.  Since the
kernel stored in the image doesn't know of that, it causes memory
corruption to occur after resume from hibernation, especially on
systems with relatively small RAM that need to swap often.

This issue can be addressed by keeping the GFP_IOFS bits clear
in gfp_allowed_mask during the entire hibernation, including the
saving of the image, until the system is finally turned off or
the hibernation is aborted.  Unfortunately, for this purpose
it's necessary to rework the way in which the hibernate and
suspend code manipulates gfp_allowed_mask.

This change is based on an earlier patch from Hugh Dickins.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Hugh Dickins <hughd@google.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-12-09 13:33:26 -08:00
..
acpi ACPI: Fix typos 2010-09-28 21:38:19 -04:00
asm-generic gpio: doc updates 2010-09-09 18:57:24 -07:00
crypto
drm drm/ttm: Fix two race conditions + fix busy codepaths 2010-10-06 09:04:43 +10:00
keys DNS: Separate out CIFS DNS Resolver code 2010-08-05 17:17:51 +00:00
linux PM / Hibernate: Fix memory corruption related to swap 2010-12-09 13:33:26 -08:00
math-emu
media V4L/DVB: videobuf-dma-sg: set correct size in last sg element 2010-09-27 22:22:01 -03:00
mtd mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
net mac80211: clear txflags for ps-filtered frames 2010-12-09 13:32:12 -08:00
pcmcia pcmcia: use struct resource for PCMCIA devices, part 2 2010-08-03 09:04:16 +02:00
rdma IB: Rename RAW_ETY to RAW_ETHERTYPE 2010-08-04 10:44:19 -07:00
rxrpc
scsi scsi: use __uX types for headers exported to user space 2010-08-11 08:59:01 -07:00
sound ALSA: emu10k1 - delay the PCM interrupts (add pcm_irq_delay parameter) 2010-08-18 15:10:59 +02:00
trace Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-24 12:21:49 -07:00
video include: replace unifdef-y with header-y 2010-08-14 22:26:51 +02:00
xen xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield 2010-08-23 12:01:35 +01:00
Kbuild