On Tue, Jul 26, 2016 at 01:29:38PM -0400, Theodore Ts'o wrote:

On Tue, Jul 26, 2016 at 03:35:02AM +0300, Kirill A. Shutemov wrote:

quoted

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.

Thanks.

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?

I think it's totally different story.

Here I have block size smaller than page size and it's not new to the
filesystem -- similar to 1k block size with 4k page size. So I was able to
re-use most of infrastructure to handle the situation.

Block size bigger than page size is backward task. I don't think I know
enough to understand how hard it would be. I guess not easy. :)

-- 
 Kirill A. Shutemov

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