From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Subject: Re: [RFC contig pages support 1/2] IB: Supports contiguous memory
 operations
Date: Tue, 8 Dec 2015 10:15:42 -0700
Message-ID: <20151208171542.GB13549@obsidianresearch.com>
References: <1449587707-24214-1-git-send-email-yishaih@mellanox.com>
 <1449587707-24214-2-git-send-email-yishaih@mellanox.com>
 <20151208151852.GA6688@infradead.org>
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To: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>, dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, talal-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org
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On Tue, Dec 08, 2015 at 07:18:52AM -0800, Christoph Hellwig wrote:
> There is absolutely nothing IB specific here.  If you want to support
> anonymous mmaps to allocate large contiguous pages work with the MM
> folks on providing that in a generic fashion.

Yes please.

We already have huge page mmaps, how much win is had by going from
huge page maps to this contiguous map?

Jason
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Date: Tue, 8 Dec 2015 10:15:42 -0700
From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Subject: Re: [RFC contig pages support 1/2] IB: Supports contiguous memory
 operations
Message-ID: <20151208171542.GB13549@obsidianresearch.com>
References: <1449587707-24214-1-git-send-email-yishaih@mellanox.com>
 <1449587707-24214-2-git-send-email-yishaih@mellanox.com>
 <20151208151852.GA6688@infradead.org>
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To: Christoph Hellwig <hch@infradead.org>
Cc: Yishai Hadas <yishaih@mellanox.com>, dledford@redhat.com, linux-rdma@vger.kernel.org, ogerlitz@mellanox.com, talal@mellanox.com, linux-mm@kvack.org

On Tue, Dec 08, 2015 at 07:18:52AM -0800, Christoph Hellwig wrote:
> There is absolutely nothing IB specific here.  If you want to support
> anonymous mmaps to allocate large contiguous pages work with the MM
> folks on providing that in a generic fashion.

Yes please.

We already have huge page mmaps, how much win is had by going from
huge page maps to this contiguous map?

Jason

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