mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

PM: hibernate: Fix mistake in kerneldoc comment 

[ Upstream commit 6e5d7300cb ]

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>
This commit is contained in:
xiongxin 2022-11-01 10:28:39 +08:00 committed by Greg Kroah-Hartman
parent 0e395fe385
commit a34346994f
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/power/snapshot.c
View File

@ -1677,8 +1677,8 @@ static unsigned long minimum_image_size(unsigned long saveable)
* /sys/power/reserved_size, respectively). To make this happen, we compute the
* total number of available page frames and allocate at least
*
* ([page frames total] + PAGES_FOR_IO + [metadata pages]) / 2
* + 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE)
* ([page frames total] - PAGES_FOR_IO - [metadata pages]) / 2
* - 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE)
*
* of them, which corresponds to the maximum size of a hibernation image.
*