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From: Maxim Levitsky <mlevitsk@redhat.com>
To: John Snow <jsnow@redhat.com>, qemu-devel@nongnu.org
Cc: Fam Zheng <fam@euphon.net>, Kevin Wolf <kwolf@redhat.com>,
	qemu-block@nongnu.org, Max Reitz <mreitz@redhat.com>,
	John Ferlan <jferlan@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 2/2] block/nvme: add support for discard
Date: Thu, 05 Sep 2019 16:24:19 +0300
Message-ID: <58a0f856b958bcb90df6d5f778c8ca0eaefaf8f9.camel@redhat.com> (raw)
In-Reply-To: <798ede8632285382a9d54dc9e3a75be046387b7d.camel@redhat.com>

On Wed, 2019-08-28 at 12:03 +0300, Maxim Levitsky wrote:
> On Tue, 2019-08-27 at 18:29 -0400, John Snow wrote:
> > 
> > On 8/25/19 3:15 AM, Maxim Levitsky wrote:
> > > Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
> > > ---
> > >  block/nvme.c       | 83 ++++++++++++++++++++++++++++++++++++++++++++++
> > >  block/trace-events |  2 ++
> > >  2 files changed, 85 insertions(+)
> > > 
> > > diff --git a/block/nvme.c b/block/nvme.c
> > > index f8bd11e19a..dd041f39c9 100644
> > > --- a/block/nvme.c
> > > +++ b/block/nvme.c
> > > @@ -112,6 +112,7 @@ typedef struct {
> > >      bool plugged;
> > >  
> > >      bool supports_write_zeros;
> > > +    bool supports_discard;
> > >  
> > >      CoMutex dma_map_lock;
> > >      CoQueue dma_flush_queue;
> > > @@ -463,6 +464,7 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
> > >  
> > >      oncs = le16_to_cpu(idctrl->oncs);
> > >      s->supports_write_zeros = (oncs & NVME_ONCS_WRITE_ZEROS) != 0;
> > > +    s->supports_discard = (oncs & NVME_ONCS_DSM) != 0;
> > 
> > Same comment -- checking !!(register & FIELD) is nicer than the
> > negative. (I'm actually not sure even the !! is needed, but it seems to
> > be a QEMU-ism and I've caught myself using it...)
> 
> All right, no problem to use !!
> 
> > 
> > Rest looks good to me on a skim, but I'm not very well-versed in NVME.
> 
> Thanks!
> 

Kind ping about this patch series.

Apart from using !!, do you think that this patch series
can be merged, or should I do anything else?
Which tree do you think this should be committed to?

I kind of want to see that merged before the freeze
starts, if there are no objections,
to reduce the amount of pending stuff in my queue.


[...]



Best regards,
	Maxim Levitsky



  reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-25  7:15 [Qemu-devel] [PATCH 0/2] block/nvme: add support for write zeros and discard Maxim Levitsky
2019-08-25  7:15 ` [Qemu-devel] [PATCH 1/2] block/nvme: add support for write zeros Maxim Levitsky
2019-08-27 22:22   ` John Snow
2019-08-28  9:02     ` Maxim Levitsky
2019-09-13 13:30     ` Maxim Levitsky
2019-08-25  7:15 ` [Qemu-devel] [PATCH 2/2] block/nvme: add support for discard Maxim Levitsky
2019-08-27 22:29   ` John Snow
2019-08-28  9:03     ` Maxim Levitsky
2019-09-05 13:24       ` Maxim Levitsky [this message]
2019-09-05 17:27         ` John Snow
2019-09-05 17:32           ` Maxim Levitsky
2019-09-09  9:25           ` Max Reitz
2019-09-09 17:03             ` John Snow
2019-09-10 14:49               ` Paolo Bonzini
2019-09-10 14:57                 ` Maxim Levitsky

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