Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps

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To: Johannes Thumshirn <jthumshirn@xxxxxxx>
Subject: Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 2 Oct 2018 07:45:47 -0700
Cc: Jan Kara <jack@xxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-nvdimm@xxxxxxxxxxxx, mhocko@xxxxxxx, Dan Williams <dan.j.williams@xxxxxxxxx>
In-reply-to: <20181002142010.GB4963@linux-x5ow.site>
References: <20181002100531.GC4135@quack2.suse.cz> <20181002121039.GA3274@linux-x5ow.site> <20181002142010.GB4963@linux-x5ow.site>
User-agent: Mutt/1.9.2 (2017-12-15)

On Tue, Oct 02, 2018 at 04:20:10PM +0200, Johannes Thumshirn wrote:
>     Provide a F_GETDAX fcntl(2) command so an application can query
>     whether it can make use of DAX or not.

How does an application "make use of DAX"?  What actual user visible
semantics are associated with a file that has this flag set?

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- Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
  - From: Jan Kara
- Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
  - From: Johannes Thumshirn
- Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps
  - From: Johannes Thumshirn

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