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| author | xiongxin <xiongxin@kylinos.cn> | 2022-11-01 10:28:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 13:25:42 +0100 |
| commit | 4973f861c3ae39a505857d57600123b33cee0dad (patch) | |
| tree | d019d9ee77162177029500ce58756bc7bdb87d9e /kernel | |
| parent | e48948d676cdc4ed0cbc1c53cea6a82884aa1dad (diff) | |
| download | linux-4973f861c3ae39a505857d57600123b33cee0dad.tar.gz linux-4973f861c3ae39a505857d57600123b33cee0dad.tar.bz2 linux-4973f861c3ae39a505857d57600123b33cee0dad.zip | |
PM: hibernate: Fix mistake in kerneldoc comment
[ Upstream commit 6e5d7300cbe7c3541bc31f16db3e9266e6027b4b ]
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: ddeb64870810 ("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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/power/snapshot.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 2a406753af90..c20ca5fb9adc 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1723,8 +1723,8 @@ 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. * |