linux-kernel - Re: [PATCH RFC v2 0/8] device mapper atomic write support

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Message-ID: <Z4rQ1ihb0GsOan6f@kernel.org>
Date: Fri, 17 Jan 2025 16:51:18 -0500
From: Mike Snitzer <snitzer@...nel.org>
To: Mikulas Patocka <mpatocka@...hat.com>, axboe@...nel.dk
Cc: John Garry <john.g.garry@...cle.com>, agk@...hat.com, hch@....de,
	song@...nel.org, yukuai3@...wei.com, kbusch@...nel.org,
	sagi@...mberg.me, James.Bottomley@...senpartnership.com,
	martin.petersen@...cle.com, linux-block@...r.kernel.org,
	dm-devel@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org, linux-nvme@...ts.infradead.org,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH RFC v2 0/8] device mapper atomic write support

On Fri, Jan 17, 2025 at 10:27:22PM +0100, Mikulas Patocka wrote:
> 
> 
> On Fri, 17 Jan 2025, Mike Snitzer wrote:
> 
> > On Thu, Jan 16, 2025 at 05:02:53PM +0000, John Garry wrote:
> > > This series introduces initial device mapper atomic write support.
> > > 
> > > Since we already support stacking atomic writes limits, it's quite
> > > straightforward to support.
> > > 
> > > Personalities dm-linear, dm-stripe, and dm-raid1 are supported here, and
> > > more personalities could be supported in future.
> > > 
> > > This is still an RFC as I would like to test further.
> > > 
> > > Based on 3d9a9e9a77c5 (block/for-6.14/block) block: limit disk max
> > > sectors to (LLONG_MAX >> 9)
> > > 
> > > Changes to v1:
> > > - Generic block layer atomic writes enable flag and dm-table rework
> > > - Add dm-stripe and dm-raid1 support
> > > - Add bio_trim() patch
> > 
> > This all looks good.
> > 
> > Mikulas, we need Jens to pick up patches 1 and 2.  I wouldn't be
> > opposed to him taking the entire set but I did notice the DM core
> > (ioctl) version and the 3 DM targets that have had atomic support
> > added need their version numbers bumped.  Given that, likely best for
> > you (Mikulas) to pick up patches 3-8 after rebasing on Jens' latest
> > for-6.14/block branch (once Jens picks up patches 1 and 2).
> > 
> > Jens, you cool with picking up patches 1+2 for 6.14?  Or too late and
> > we circle back to this for 6.15?
> > 
> > Either way, for the series:
> > 
> > Reviewed-by: Mike Snitzer <snitzer@...nel.org>
> 
> Hi
> 
> I rebased on Jens' block tree, applied the patches 3-8, increased 
> DM_VERSION_MINOR, DM_VERSION_EXTRA, increased version numbers in 
> dm-linear, dm-stripe, dm-raid1 and uploaded it to git.kernel.org.
> 
> You can check it if it's correct.

Looks good, thanks!

Mike