linux

iv/linux

History

Rafael J. Wysocki 6715045ddc PM / Hibernate: Avoid hitting OOM during preallocation of memory

There is a problem in hibernate_preallocate_memory() that it calls
preallocate_image_memory() with an argument that may be greater than
the total number of available non-highmem memory pages.  If that's
the case, the OOM condition is guaranteed to trigger, which in turn
can cause significant slowdown to occur during hibernation.

To avoid that, make preallocate_image_memory() adjust its argument
before calling preallocate_image_pages(), so that the total number of
saveable non-highem pages left is not less than the minimum size of
a hibernation image.  Change hibernate_preallocate_memory() to try to
allocate from highmem if the number of pages allocated by
preallocate_image_memory() is too low.

Modify free_unnecessary_pages() to take all possible memory
allocation patterns into account.

Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: M. Vefa Bicakci <bicave@superonline.com>

2010-09-11 21:03:53 +02:00

block_io.c

block: unify flags for struct bio and struct request

2010-08-07 18:20:39 +02:00

console.c

vt: introduce and use vt_kmsg_redirect() function

2009-12-15 08:53:28 -08:00

hibernate.c

hibernation: freeze swap at hibernation

2010-08-09 20:45:04 -07:00

Kconfig

suspend: Move NVS save/restore code to generic suspend functionality