linux-kernel - Re: [PATCH] dax, pmem: add support for msync

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Date:	Mon, 31 Aug 2015 21:34:49 +0200
From:	Christoph Hellwig <hch@....de>
To:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...l.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>, Hugh Dickins <hughd@...gle.com>,
	Ingo Molnar <mingo@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-nvdimm@...ts.01.org, Matthew Wilcox <willy@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org
Subject: Re: [PATCH] dax, pmem: add support for msync

On Mon, Aug 31, 2015 at 01:26:40PM -0600, Ross Zwisler wrote:
> > Should this be abstracted by adding a ->msync method?  Maybe not
> > worth to do for now, but it might be worth to keep that in mind.
> 
> Where would we add the ->msync method?  Do you mean to the PMEM API, or
> somewhere else?

vm_operations_struct would be the most logical choice, with filesystems
having a dax-specific instance of that.
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