linux-kernel - Re: remap_file

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Message-ID: <20140519165637.GA663@infradead.org>
Date:	Mon, 19 May 2014 09:56:37 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	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>,
	Armin Rigo <arigo@...es.org>
Subject: Re: remap_file_pages() use

On Mon, May 19, 2014 at 06:17:58PM +0300, Kirill A. Shutemov wrote:
> IIUC PyPy uses the syscall in some early prototype and looks like guys are
> okay to rework it to mmap() if default sysctl_max_map_count will be high
> enough.

My point is that we already found a few users just by discussing the
issue on lkml, and thus establishing that a) there are users outside of
Oracle, and b) there probably will be lots more that we don't even know
about.

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