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Date:   Mon, 4 Apr 2022 14:38:58 -0300
From:   Jason Gunthorpe <>
To:     Felix Kuehling <>
Cc:     Christoph Hellwig <>, Alex Sierra <>,,,,,,,,,,,
Subject: Re: [PATCH v2 1/3] mm: add vm_normal_lru_pages for LRU handled pages

On Fri, Apr 01, 2022 at 04:08:35PM -0400, Felix Kuehling wrote:

> > In general I find the vm_normal_lru_page vs vm_normal_page
> > API highly confusing.  An explicit check for zone device pages
> > in the dozen or so spots that care has a much better documentation
> > value, especially if accompanied by comments where it isn't entirely
> > obvious.
> OK. We can do that. It would solve the function naming problem, and we'd
> have more visibility of device page handling in more places in the kernel,
> which has educational value.

Personally I find the 'is page XYZ' pretty confusing, like I don't
know half of what the PageKsm annotations are for..

Testing against a specific property the code goes on to use right away
seems more descriptive to me.


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