Re: [RFC PATCH 12/12] PM / hibernate: update the resume offset on SNAPSHOT_SET_SWAP_AREA

From: Besogonov, Aleksei
Date: Thu Jun 14 2018 - 15:50:30 EST

(sorry for top-posting)

Well, not completely broken. It just required a restart for the offset setting to take an effect.

ïOn 6/14/18, 12:46, "Pavel Machek" <pavel@xxxxxx> wrote:


> From: Aleksei Besogonov <cyberax@xxxxxxxxxx>
> The SNAPSHOT_SET_SWAP_AREA is supposed to be used to set the hibernation
> offset on a running kernel to enable hibernating to a swap file.
> However, it doesn't actually update the swsusp_resume_block variable. As
> a result, the hibernation fails at the last step (after all the data is
> written out) in the validation of the swap signature in
> mark_swapfiles().
> Before this patch, the command line processing was the only place where
> swsusp_resume_block was set.

Are you saying that suspend-to-file was broken, even on
non-virtualized systems?

If so, we may this to go in first...

(cesky, pictures)