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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,
	KVM list <kvm@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	Qemu Developers <qemu-devel@nongnu.org>,
	linux-ext4 <linux-ext4@vger.kernel.org>,
	linux-xfs <linux-xfs@vger.kernel.org>,
	Ross Zwisler <zwisler@kernel.org>,
	Vishal L Verma <vishal.l.verma@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Matthew Wilcox <willy@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Christoph Hellwig <hch@infradead.org>,
	Len Brown <lenb@kernel.org>, Jan Kara <jack@suse.cz>,
	Theodore Ts'o <tytso@mit.edu>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	"Darrick J. Wong" <darrick.wong@oracle.com>,
	lcapitulino@redhat.com, Kevin Wolf <kwolf@redhat.com>,
	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 v7 3/6] libnvdimm: add dax_dev sync flag
Date: Thu, 9 May 2019 08:24:24 -0400 (EDT)	[thread overview]
Message-ID: <511098535.27565704.1557404664499.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <CAPcyv4hRdvypEj4LBTMfUFm80BdpRYbOugrkkj-3Kk_LErXPqQ@mail.gmail.com>


> >
> > 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>
> [..]
> > diff --git a/include/linux/dax.h b/include/linux/dax.h
> > index 0dd316a74a29..c97fc0cc7167 100644
> > --- a/include/linux/dax.h
> > +++ b/include/linux/dax.h
> > @@ -7,6 +7,9 @@
> >  #include <linux/radix-tree.h>
> >  #include <asm/pgtable.h>
> >
> > +/* Flag for synchronous flush */
> > +#define DAXDEV_F_SYNC true
> 
> I'd feel better, i.e. it reads more canonically, if this was defined
> as (1UL << 0) and the argument to alloc_dax() was changed to 'unsigned
> long flags' rather than a bool.

Sure, Will send a v8 with suggested changes.

Thank You,
Pankaj

> 

  reply	other threads:[~2019-05-09 12:24 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-26  5:00 [PATCH v7 0/6] virtio pmem driver Pankaj Gupta
2019-04-26  5:00 ` [PATCH v7 1/6] libnvdimm: nd_region flush callback support Pankaj Gupta
2019-04-26  5:00 ` [PATCH v7 2/6] virtio-pmem: Add virtio pmem driver Pankaj Gupta
2019-04-30  5:53   ` [Qemu-devel] " Yuval Shaia
2019-04-30  6:06     ` Pankaj Gupta
2019-05-07 15:35   ` Dan Williams
2019-05-08 11:19     ` [Qemu-devel] " Pankaj Gupta
2019-05-10 23:33       ` Dan Williams
2019-05-11  1:26         ` Pankaj Gupta
2019-05-07 20:25   ` Jakub Staroń
2019-05-08 11:12     ` Pankaj Gupta
2019-05-08 15:23       ` Pankaj Gupta
2019-05-08 19:05       ` Jakub Staroń
2019-04-26  5:00 ` [PATCH v7 3/6] libnvdimm: add dax_dev sync flag Pankaj Gupta
2019-05-07 15:40   ` Dan Williams
2019-05-09 12:24     ` Pankaj Gupta [this message]
2019-04-26  5:00 ` [PATCH v7 4/6] dax: check synchronous mapping is supported Pankaj Gupta
2019-05-07 19:24   ` [Qemu-devel] " Jakub Staroń
2019-05-08  5:31     ` Pankaj Gupta
2019-04-26  5:00 ` [PATCH v7 5/6] ext4: disable map_sync for async flush Pankaj Gupta
2019-04-26  5:00 ` [PATCH v7 6/6] xfs: " Pankaj Gupta
2019-05-07 15:37   ` Dan Williams
2019-05-07 16:17     ` Darrick J. Wong
2019-05-08  5:49       ` [Qemu-devel] " Pankaj Gupta

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