From: Pankaj Gupta <pagupta@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm <linux-nvdimm@lists.01.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
virtualization@lists.linux-foundation.org,
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Ross Zwisler <zwisler@kernel.org>,
Vishal L Verma <vishal.l.verma@intel.com>,
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"Michael S. Tsirkin" <mst@redhat.com>,
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Igor Mammedov <imammedo@redhat.com>, jmoyer <jmoyer@redhat.com>,
Nitesh Narayan Lal <nilal@redhat.com>,
Rik van Riel <riel@surriel.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Andrea Arcangeli <aarcange@redhat.com>,
David Hildenbrand <david@redhat.com>, david <david@fromorbit.com>,
cohuck@redhat.com, Xiao Guangrong <xiaoguangrong.eric@gmail.com>,
Paolo Bonzini <pbonzini@redhat.com>,
kilobyte@angband.pl, yuval shaia <yuval.shaia@oracle.com>
Subject: Re: [PATCH v5 3/6] libnvdimm: add dax_dev sync flag
Date: Thu, 11 Apr 2019 11:39:06 -0400 (EDT) [thread overview]
Message-ID: <393821092.21153045.1554997146416.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <CAPcyv4gXwE2k3JU94GPav0xn2LEgR6-7ZEVYyTHFRjCfTYjerw@mail.gmail.com>
Hi Dan,
Thank you for the review.
> >
> > This patch adds 'DAXDEV_SYNC' flag which is set
> > for nd_region doing synchronous flush. This later
> > is used to disable MAP_SYNC functionality for
> > ext4 & xfs filesystem for devices don't support
> > synchronous flush.
> >
> > Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
> > ---
> > drivers/dax/bus.c | 2 +-
> > drivers/dax/super.c | 13 ++++++++++++-
> > drivers/md/dm.c | 2 +-
> > drivers/nvdimm/pmem.c | 3 ++-
> > drivers/nvdimm/region_devs.c | 7 +++++++
> > include/linux/dax.h | 9 +++++++--
> > include/linux/libnvdimm.h | 1 +
> > 7 files changed, 31 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> > index 2109cfe80219..431bf7d2a7f9 100644
> > --- a/drivers/dax/bus.c
> > +++ b/drivers/dax/bus.c
> > @@ -388,7 +388,7 @@ struct dev_dax *__devm_create_dev_dax(struct dax_region
> > *dax_region, int id,
> > * No 'host' or dax_operations since there is no access to this
> > * device outside of mmap of the resulting character device.
> > */
> > - dax_dev = alloc_dax(dev_dax, NULL, NULL);
> > + dax_dev = alloc_dax(dev_dax, NULL, NULL, true);
>
> I find apis that take a boolean as unreadable. What does 'true' mean?
> It wastes time to go look at the function definition vs something
> like:
>
> alloc_dax(dev_dax, NULL, NULL, DAXDEV_F_SYNC);
Agree. Will change as suggested.
Best regards,
Pankaj
>
next prev parent reply other threads:[~2019-04-11 15:39 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 4:08 [PATCH v5 0/6] virtio pmem driver Pankaj Gupta
2019-04-10 4:08 ` [PATCH v5 1/6] libnvdimm: nd_region flush callback support Pankaj Gupta
2019-04-11 14:51 ` Dan Williams
2019-04-11 15:57 ` [Qemu-devel] " Pankaj Gupta
2019-04-11 16:09 ` Dan Williams
2019-04-11 16:23 ` Pankaj Gupta
2019-04-12 8:32 ` Jan Kara
2019-04-12 13:12 ` Jeff Moyer
2019-04-18 6:27 ` [Qemu-devel] " Pankaj Gupta
2019-04-18 16:05 ` Dan Williams
2019-04-18 16:10 ` Jeff Moyer
2019-04-18 16:18 ` Christoph Hellwig
2019-04-18 18:14 ` Dan Williams
2019-04-22 15:51 ` Jeff Moyer
2019-04-22 19:44 ` Dan Williams
2019-04-22 21:03 ` Jeff Moyer
2019-04-23 4:07 ` Pankaj Gupta
2019-04-10 4:08 ` [PATCH v5 2/5] virtio-pmem: Add virtio pmem driver Pankaj Gupta
2019-04-10 12:24 ` Cornelia Huck
2019-04-10 14:38 ` Yuval Shaia
2019-04-10 15:44 ` Pankaj Gupta
2019-04-10 15:38 ` Pankaj Gupta
2019-04-10 13:12 ` Michael S. Tsirkin
2019-04-10 14:03 ` [Qemu-devel] " Pankaj Gupta
2019-04-10 14:31 ` Cornelia Huck
2019-04-10 16:46 ` Michael S. Tsirkin
2019-04-10 16:52 ` Cornelia Huck
2019-04-10 14:41 ` Yuval Shaia
2019-04-10 4:08 ` [PATCH v5 3/6] libnvdimm: add dax_dev sync flag Pankaj Gupta
2019-04-10 8:28 ` Jan Kara
2019-04-10 8:38 ` Pankaj Gupta
2019-04-11 14:56 ` Dan Williams
2019-04-11 15:39 ` Pankaj Gupta [this message]
2019-04-10 4:08 ` [PATCH v5 4/6] dax: check synchronous mapping is supported Pankaj Gupta
2019-04-10 8:25 ` Jan Kara
2019-04-10 8:31 ` Pankaj Gupta
2019-04-10 4:08 ` [PATCH v5 5/6] ext4: disable map_sync for async flush Pankaj Gupta
2019-04-10 4:08 ` [PATCH v5 6/6] xfs: " Pankaj Gupta
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