From: Keith Busch <keith.busch@intel.com>
To: "Verma, Vishal L" <vishal.l.verma@intel.com>
Cc: "y-goto@jp.fujitsu.com" <y-goto@jp.fujitsu.com>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>
Subject: Re: [PATCH] ndctl: Use max_available_extent for creating namespaces
Date: Tue, 26 Jun 2018 10:29:24 -0600 [thread overview]
Message-ID: <20180626162924.GB6754@localhost.localdomain> (raw)
In-Reply-To: <1530029963.27147.21.camel@intel.com>
On Tue, Jun 26, 2018 at 09:19:28AM -0700, Verma, Vishal L wrote:
> On Tue, 2018-06-26 at 09:37 -0600, Keith Busch wrote:
> > The available_size attribute returns all the unused regions, but a
> > namespace has to use contiguous free regions. This patch uses the
> > attribute returning the largest capacity that can be created for
> > determining if the namespace can be created.
> >
> > Signed-off-by: Keith Busch <keith.busch@intel.com>
> > ---
> > ndctl/lib/libndctl.c | 30 ++++++++++++++++++++++++++++++
> > ndctl/lib/libndctl.sym | 1 +
> > ndctl/libndctl.h | 2 ++
> > ndctl/namespace.c | 2 +-
> > 4 files changed, 34 insertions(+), 1 deletion(-)
>
> Hi Keith,
>
> The patch looks good, but just a couple of 'meta' comments.
> 1. We typically send ndctl patches separately from kernel patches (i.e. not
> thraded together).
> 2. for ndctl patches, an 'ndctl PATCH' prefix is recommended. You can set a
> repo local config parameter for doing this automatically on git format-
> patch.
> git config format.subjectprefix "ndctl PATCH"
>
> I'm thinking the kernel changes will be queued for 4.19, which means the
> ndctl changes will go into v62.
Thanks for the info. I'll make those changes for next time.
I think I may need to send a v2 for this. Should we have this fall back to
the available_size for the older kernels where the max_available_extents
attribute is not provided? I actually had that in my repo and used a
slightly older patch here, but I'm not sure if its okay to strongly
couple an ndctl release to a kernel version.
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next prev parent reply other threads:[~2018-06-26 16:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-26 15:37 [PATCH 0/2] Namespace creation fixups Keith Busch
2018-06-26 15:37 ` [PATCH 1/2] libnvdimm: Use largest contiguous area for namespace size Keith Busch
2018-07-05 17:57 ` Dan Williams
2018-07-05 17:58 ` Keith Busch
2018-06-26 15:37 ` [PATCH] ndctl: Use max_available_extent for creating namespaces Keith Busch
2018-06-26 16:19 ` Verma, Vishal L
2018-06-26 16:29 ` Keith Busch [this message]
2018-06-26 16:27 ` Verma, Vishal L
2018-06-26 16:32 ` Dan Williams
2018-06-26 16:34 ` Verma, Vishal L
2018-06-26 15:37 ` [PATCH 2/2] libnvdimm: Export max available extent Keith Busch
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