linux-kernel - Re: [PATCHv1, RFC 00/33] ext4: support of huge pages

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Date:	Tue, 26 Jul 2016 13:29:38 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Jan Kara <jack@...e.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Hugh Dickins <hughd@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...el.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Matthew Wilcox <willy@...radead.org>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-block@...r.kernel.org
Subject: Re: [PATCHv1, RFC 00/33] ext4: support of huge pages

On Tue, Jul 26, 2016 at 03:35:02AM +0300, Kirill A. Shutemov wrote:
> Here's the first version of my patchset which intended to bring huge pages
> to ext4. It's not yet ready for applying or serious use, but good enough
> to show the approach.

Thanks.  The major issues I noticed when doing a quick scan of the
patches you've already mentioned here.  I'll try to take a closer look
in the next week or so when I have time.

One random question --- in the huge=always approach, how much
additional work would be needed to support file systems with a 64k
block size on a system with 4k pages?

					- Ted