linux-kernel - Re: Roadmap for netfslib and local caching (cachefiles)

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Message-ID: <524118.1706195224@warthog.procyon.org.uk>
Date: Thu, 25 Jan 2024 15:07:04 +0000
From: David Howells <dhowells@...hat.com>
To: Benjamin Coddington <bcodding@...hat.com>
Cc: dhowells@...hat.com, Gao Xiang <xiang@...nel.org>,
    Jeff Layton <jlayton@...nel.org>,
    Christian Brauner <brauner@...nel.org>,
    Matthew Wilcox <willy@...radead.org>,
    Eric Sandeen <esandeen@...hat.com>, v9fs@...ts.linux.dev,
    linux-afs@...ts.infradead.org, ceph-devel@...r.kernel.org,
    linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
    linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
    linux-kernel@...r.kernel.org
Subject: Re: Roadmap for netfslib and local caching (cachefiles)

Benjamin Coddington <bcodding@...hat.com> wrote:

> > NFS.  NFS at the very least needs to be altered to give up the use of
> > PG_private_2.
> 
> Forgive what may be a naive question, but where is NFS using PG_private_2?

aka PG_fscache.

See nfs_fscache_release_folio() for example where it uses folio_test_fscache()
and folio_wait_fscache().

David