Re: [patch 4/4] dm-writecache: use new API for flushing

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On Wed, 30 May 2018, Mike Snitzer wrote:

> On Wed, May 30 2018 at  9:21am -0400,
> Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote:
> 
> > 
> > 
> > On Wed, 30 May 2018, Mike Snitzer wrote:
> > 
> > > That is really great news, can you submit an incremental patch that
> > > layers ontop of the linux-dm.git 'dm-4.18' branch?
> > > 
> > > Thanks,
> > > Mike
> > 
> > I've sent the current version that I have. I fixed the bugs that were 
> > reported here (missing DAX, dm_bufio_client_create, __branch_check__ 
> > long->int truncation).
> 
> OK, but a monolithic dm-writecache.c is no longer useful to me.  I can
> drop Arnd's gcc warning fix (with the idea that Ingo or Steve will take
> your __branch_check__ patch).  Not sure what the dm_bufio_client_create
> fix is... must've missed a report about that.
> 
> ANyway, point is we're on too a different phase of dm-writecache.c's
> development.  I've picked it up and am trying to get it ready for the
> 4.18 merge window (likely opening Sunday).  Therefore it needs to be in
> a git tree, and incremental changes overlayed.  I cannot be rebasing at
> this late stage in the 4.18 development window.
> 
> Thanks,
> Mike

I downloaded dm-writecache from your git repository some times ago - but 
you changed a lot of useless things (i.e. reordering the fields in the 
structure) since that time - so, you'll have to merge the changes.

You dropped the latency measuring code - why? We still would like to 
benchmark the driver.

Mikulas

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