linux-kernel - Re: [PATCH 00/20] virtiofs: Add DAX support

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Message-ID: <yrjhlfnzcrmd.fsf@pohly-mobl1.fritz.box>
Date:   Tue, 17 Mar 2020 09:28:26 +0100
From:   "Patrick Ohly" <patrick.ohly@...el.com>
To:     Vivek Goyal <vgoyal@...hat.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvdimm@...ts.01.org, virtio-fs@...hat.com, miklos@...redi.hu,
        stefanha@...hat.com, dgilbert@...hat.com, mst@...hat.com
Subject: Re: [PATCH 00/20] virtiofs: Add DAX support

Vivek Goyal <vgoyal@...hat.com> writes:
> We expect users will issue fsync/msync like a regular filesystem to
> make changes persistent. So in that aspect, rejecting MAP_SYNC
> makes sense. I will test and see if current code is rejecting MAP_SYNC
> or not.

Last time I checked, it did. Here's the test program that I wrote for
that:
https://github.com/intel/pmem-csi/blob/ee3200794a1ade49a02df6f359a134115b409e90/test/cmd/pmem-dax-check/main.go

-- 
Best Regards

Patrick Ohly