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[ Upstream commit6e5d7300cb] The actual maximum image size formula in hibernate_preallocate_memory() is as follows: max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE); but the one in the kerneldoc comment of the function is different and incorrect. Fixes:ddeb648708("PM / Hibernate: Add sysfs knob to control size of memory for drivers") Signed-off-by: xiongxin <xiongxin@kylinos.cn> [ rjw: Subject and changelog rewrite ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>