[dm-devel] staged dm_internal_{suspend, resume} related changes for wider review

[Mike Snitzer]

On Nov 3, 2014 6:27 PM, "Mikulas Patocka" <mpatocka at redhat.com> wrote:
>
>
>
> On Tue, 28 Oct 2014, Mike Snitzer wrote:
>
> > I pushed rebased versions of these patches to linux-dm.git's
> > 'dm-for-3.19' branch (and pulled into 'for-next' purely to get the
> > kernel.org autobuilders testing the code).  See top 3 commits here:
> >
https://git.kernel.org/cgit/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-for-3.19
> >
> > I'm open to any and all changes or dropping code entirely; so me staging
> > like this is just to keep the review ball rolling as quickly as
> > possible.
> >
> > But in particular we need to get Mikulas' and Bryn's feedback on how the
> > dm_internal_{suspend,resume} changes impact dm-stats.
> >
> > Mike
>
> Hi
>
> As I said on irc - it is not correct to take a mutex from one syscall and
> drop the mutex from another syscall.

I didn't modify that aspect of dm_internal_suspend+resume.  I only extended
the interface to other targets via export.

> I hope Joe can use the bio prison to block bios while the pool is
> suspended.

We'll see.
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