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From: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
	Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>,
	Heiko Carstens
	<heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Bart Van Assche <Bart.VanAssche-Sjgp3cTcYWE@public.gmane.org>,
	dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
	Benjamin Herrenschmidt
	<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
	Martin Schwidefsky
	<schwidefsky-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Gerald Schaefer
	<gerald.schaefer-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH v6 1/2] dax: introduce CONFIG_DAX_DRIVER
Date: Mon, 8 Jan 2018 11:07:51 -0500	[thread overview]
Message-ID: <20180108160750.GB10224@redhat.com> (raw)
In-Reply-To: <151198200084.7051.8668235721724414674.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

On Wed, Nov 29 2017 at  2:00pm -0500,
Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:

> In support of allowing device-mapper to compile out idle/dead code when
> there are no dax providers in the system, introduce the DAX_DRIVER
> symbol. This is selected by all leaf drivers that device-mapper might be
> layered on top. This allows device-mapper to conditionally 'select DAX'
> only when a provider is present.
> 
> Cc: Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>
> Cc: Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
> Cc: Martin Schwidefsky <schwidefsky-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Heiko Carstens <heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Gerald Schaefer <gerald.schaefer-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
> Cc: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
> Cc: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> Cc: Bart Van Assche <Bart.VanAssche-Sjgp3cTcYWE@public.gmane.org>
> Signed-off-by: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Reviewed-by: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

WARNING: multiple messages have this Message-ID (diff)
From: Mike Snitzer <snitzer@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org, Michael Ellerman <mpe@ellerman.id.au>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Bart Van Assche <Bart.VanAssche@wdc.com>,
	dm-devel@redhat.com, Paul Mackerras <paulus@samba.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Gerald Schaefer <gerald.schaefer@de.ibm.com>
Subject: Re: [PATCH v6 1/2] dax: introduce CONFIG_DAX_DRIVER
Date: Mon, 8 Jan 2018 11:07:51 -0500	[thread overview]
Message-ID: <20180108160750.GB10224@redhat.com> (raw)
In-Reply-To: <151198200084.7051.8668235721724414674.stgit@dwillia2-desk3.amr.corp.intel.com>

On Wed, Nov 29 2017 at  2:00pm -0500,
Dan Williams <dan.j.williams@intel.com> wrote:

> In support of allowing device-mapper to compile out idle/dead code when
> there are no dax providers in the system, introduce the DAX_DRIVER
> symbol. This is selected by all leaf drivers that device-mapper might be
> layered on top. This allows device-mapper to conditionally 'select DAX'
> only when a provider is present.
> 
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Mike Snitzer <snitzer@redhat.com>
> Cc: Bart Van Assche <Bart.VanAssche@wdc.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Reviewed-by: Mike Snitzer <snitzer@redhat.com>
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm

  parent reply	other threads:[~2018-01-08 16:07 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-29 18:59 [PATCH v6 0/2] dax, dm: stop requiring dax for device-mapper Dan Williams
2017-11-29 18:59 ` Dan Williams
     [not found] ` <151198199487.7051.7083189934624068090.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-11-29 19:00   ` [PATCH v6 1/2] dax: introduce CONFIG_DAX_DRIVER Dan Williams
2017-11-29 19:00     ` Dan Williams
     [not found]     ` <151198200084.7051.8668235721724414674.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-01-08 16:07       ` Mike Snitzer [this message]
2018-01-08 16:07         ` Mike Snitzer
2017-11-29 19:00   ` [PATCH v6 2/2] dm: allow device-mapper to operate without dax support Dan Williams
2017-11-29 19:00     ` Dan Williams
     [not found]     ` <151198200599.7051.6920383092194777505.stgit-p8uTFz9XbKj2zm6wflaqv1nYeNYlB/vhral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-01-08 16:08       ` Mike Snitzer
2018-01-08 16:08         ` Mike Snitzer
2018-01-04 18:12 ` [PATCH v6 0/2] dax, dm: stop requiring dax for device-mapper Mike Snitzer
2018-01-04 18:12   ` Mike Snitzer
     [not found]   ` <20180104181202.GA14491-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-01-07 20:31     ` Dan Williams
2018-01-07 20:31       ` Dan Williams
     [not found]       ` <CAA9_cmd8ywgxwfy6ZDkc1ERfD56L4HbTo7NkS5T1N9m-ZcjgzA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-01-08 16:06         ` Mike Snitzer
2018-01-08 16:06           ` Mike Snitzer

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