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Message-ID: <20181002145206.GA10903@infradead.org> Date: Tue, 2 Oct 2018 07:52:06 -0700 From: Christoph Hellwig <hch@...radead.org> To: Johannes Thumshirn <jthumshirn@...e.de> Cc: Christoph Hellwig <hch@...radead.org>, Jan Kara <jack@...e.cz>, Dan Williams <dan.j.williams@...el.com>, Dave Jiang <dave.jiang@...el.com>, linux-nvdimm@...ts.01.org, linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, linux-api@...r.kernel.org Subject: Re: Problems with VM_MIXEDMAP removal from /proc/<pid>/smaps On Tue, Oct 02, 2018 at 04:44:13PM +0200, Johannes Thumshirn wrote: > On Tue, Oct 02, 2018 at 07:37:13AM -0700, Christoph Hellwig wrote: > > No, it should not. DAX is an implementation detail thay may change > > or go away at any time. > > Well we had an issue with an application checking for dax, this is how > we landed here in the first place. So what exacty is that "DAX" they are querying about (and no, I'm not joking, nor being philosophical).
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