All of lore.kernel.org
 help / color / mirror / Atom feed
From: Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Mike Snitzer <snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org
Subject: Re: dm,dax: Make sure dm_dax_flush() is called if device supports it
Date: Tue, 25 Jul 2017 16:54:16 -0400	[thread overview]
Message-ID: <20170725205416.GC20979@redhat.com> (raw)
In-Reply-To: <20170725204608.GA27693-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

On Tue, Jul 25, 2017 at 04:46:09PM -0400, Mike Snitzer wrote:
> On Tue, Jul 25 2017 at  3:43pm -0400,
> Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> 
> > Right now, dm_dax_flush() is not being called and I think it is not being
> > called becuase DAXDEV_WRITE_CACHE is not set on dm dax device.
> > 
> > If underlying dax device supports write cache, set DAXDEV_WRITE_CACHE on
> > dm dax device. This will get dm_dax_flush() being called.
> > 
> > Signed-off-by: Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> 
> In general this looks mostly OK.. but it seems a bit weird to on the one
> hand: test if DAXDEV_WRITE_CACHE is set on underlying device.  And on
> the other: say it is a write cache because it is "flush_capable".  Kind
> of blurring things a bit.
> 
> Why not s/device_dax_flush_capable/device_dax_write_cache_enabled/ ?

Sounds good. I will rename it in next version.

Vivek

WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com>
To: Mike Snitzer <snitzer@redhat.com>
Cc: dm-devel@redhat.com, linux-nvdimm@lists.01.org
Subject: Re: dm,dax: Make sure dm_dax_flush() is called if device supports it
Date: Tue, 25 Jul 2017 16:54:16 -0400	[thread overview]
Message-ID: <20170725205416.GC20979@redhat.com> (raw)
In-Reply-To: <20170725204608.GA27693@redhat.com>

On Tue, Jul 25, 2017 at 04:46:09PM -0400, Mike Snitzer wrote:
> On Tue, Jul 25 2017 at  3:43pm -0400,
> Vivek Goyal <vgoyal@redhat.com> wrote:
> 
> > Right now, dm_dax_flush() is not being called and I think it is not being
> > called becuase DAXDEV_WRITE_CACHE is not set on dm dax device.
> > 
> > If underlying dax device supports write cache, set DAXDEV_WRITE_CACHE on
> > dm dax device. This will get dm_dax_flush() being called.
> > 
> > Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
> 
> In general this looks mostly OK.. but it seems a bit weird to on the one
> hand: test if DAXDEV_WRITE_CACHE is set on underlying device.  And on
> the other: say it is a write cache because it is "flush_capable".  Kind
> of blurring things a bit.
> 
> Why not s/device_dax_flush_capable/device_dax_write_cache_enabled/ ?

Sounds good. I will rename it in next version.

Vivek
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm

  parent reply	other threads:[~2017-07-25 20:54 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-25 19:43 [PATCH] dm,dax: Make sure dm_dax_flush() is called if device supports it Vivek Goyal
2017-07-25 19:43 ` Vivek Goyal
     [not found] ` <20170725194337.GA20979-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-25 20:43   ` Dan Williams
2017-07-25 20:43     ` Dan Williams
2017-07-25 20:51     ` [PATCH] dm, dax: " Vivek Goyal
2017-07-25 20:51       ` [PATCH] dm,dax: " Vivek Goyal
2017-07-25 20:46 ` dm, dax: " Mike Snitzer
2017-07-25 20:46   ` dm,dax: " Mike Snitzer
     [not found]   ` <20170725204608.GA27693-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-07-25 20:54     ` Vivek Goyal [this message]
2017-07-25 20:54       ` Vivek Goyal

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170725205416.GC20979@redhat.com \
    --to=vgoyal-h+wxahxf7alqt0dzr+alfa@public.gmane.org \
    --cc=dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    --cc=linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org \
    --cc=snitzer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.