linux-kernel - Re: remap_file

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Message-Id: <20140526134718.0AAC7E009B@blue.fi.intel.com>
Date:	Mon, 26 May 2014 16:47:18 +0300 (EEST)
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Jeff Smith <jsmith.lkml@...il.com>
Cc:	Paolo Bonzini <pbonzini@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Christoph Hellwig <hch@...radead.org>,
	Kenny Simpson <theonetruekenny@...il.com>,
	Michal Hocko <mhocko@...e.cz>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Dave Jones <davej@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: remap_file_pages() use

Jeff Smith wrote:
> OK, I misinterpreted "the overlapped part of the mapping(s) will be
> discarded" as discarding the -new- mappings. My objections about
> needing a replacement for remap_file_pages() are gone, but my concerns
> about existing code still remain.

As I said, emulation will be there for long time. With warning in dmesg.
The emulation is interface-compatible, but slower in some cases (not
your's).

-- 
 Kirill A. Shutemov
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