[linux-pm] [PATCH -mm] kexec jump -v9

Alan Stern stern at rowland.harvard.edu
Wed Mar 12 11:01:49 EDT 2008

On Wed, 12 Mar 2008, Huang, Ying wrote:

> I think "kexec based hibernation" is the only currently available
> possible method to write out image without freezer (after driver works
> are done). If other process is running, how to prevent them from writing
> to disk without freezing them in current implementation?

This is a very good question.

It's a matter of managing the block layer's request queues.  Somehow 
the existing I/O requests must remain blocked while the requests needed 
for writing the image must be allowed to proceed.

I don't know what would be needed to make this work, but it ought to be 
possible somehow...

Alan Stern

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