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SubjectRe: [PATCH] block/psi: make PSI annotations of submit_bio only work for file pages
On Wed, Mar 30, 2022 at 09:00:46AM -0400, Johannes Weiner wrote:
> If you want type distinction, we should move it all into MM code, like
> Christoph is saying. Were swap code handles anon refaults and the page
> cache code handles file refaults. This would be my preferred layering,
> and my original patch did that: https://lkml.org/lkml/2019/7/22/1070.

FYI, I started redoing that version and I think with all the cleanups
to filemap.c and the readahead code this can be done fairly nicely now:

http://git.infradead.org/users/hch/block.git/commitdiff/666abb29c6db870d3941acc5ac19e83fbc72cfd4

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