Re: [PATCH v4 0/3] mm, netfs, fscache: Stop read optimisation when folio removed from pagecache

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To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH v4 0/3] mm, netfs, fscache: Stop read optimisation when folio removed from pagecache
From: David Howells <dhowells@xxxxxxxxxx>
Date: Wed, 23 Nov 2022 23:12:07 +0000
Cc: dhowells@xxxxxxxxxx, Ilya Dryomov <idryomov@xxxxxxxxx>, Dave Wysochanski <dwysocha@xxxxxxxxxx>, Shyam Prasad N <nspmangalore@xxxxxxxxx>, linux-nfs@xxxxxxxxxxxxxxx, linux-cifs@xxxxxxxxxxxxxxx, Dominique Martinet <asmadeus@xxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, Rohith Surabattula <rohiths.msft@xxxxxxxxx>, v9fs-developer@xxxxxxxxxxxxxxxxxxxxx, ceph-devel@xxxxxxxxxxxxxxx, linux-cachefs@xxxxxxxxxx, linux-afs@xxxxxxxxxxxxxxxxxxx, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Steve French <sfrench@xxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, Jeff Layton <jlayton@xxxxxxxxxx>, linux-erofs@xxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <CAHk-=wjq7gRdVUrwpQvEN1+um+hTkW8dZZATtfFS-fp9nNssRw@mail.gmail.com>
Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903
References: <CAHk-=wjq7gRdVUrwpQvEN1+um+hTkW8dZZATtfFS-fp9nNssRw@mail.gmail.com> <166924370539.1772793.13730698360771821317.stgit@warthog.procyon.org.uk>

Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> Well, the patches look superficially cleaner to me, at least. That
> "doesn't seem to be necessary" makes me a bit worried,

I meant that it doesn't cause a splat to appear in dmesg saying that an
unexpected flag was left set.

David

References:
- Re: [PATCH v4 0/3] mm, netfs, fscache: Stop read optimisation when folio removed from pagecache
  - From: Linus Torvalds
- [PATCH v4 0/3] mm, netfs, fscache: Stop read optimisation when folio removed from pagecache
  - From: David Howells

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