linux-kernel - Re: [PATCH v2 13/19] netfs: Add a function to consolidate beginning a read

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Date:   Wed, 09 Mar 2022 22:08:58 +0000
From:   David Howells <dhowells@...hat.com>
To:     Jeff Layton <jlayton@...hat.com>
Cc:     dhowells@...hat.com, linux-cachefs@...hat.com,
        Anna Schumaker <anna.schumaker@...app.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        David Wysochanski <dwysocha@...hat.com>,
        Ilya Dryomov <idryomov@...il.com>,
        Jeffle Xu <jefflexu@...ux.alibaba.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-afs@...ts.infradead.org, linux-nfs@...r.kernel.org,
        linux-cifs@...r.kernel.org, ceph-devel@...r.kernel.org,
        v9fs-developer@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 13/19] netfs: Add a function to consolidate beginning a read

Jeff Layton <jlayton@...hat.com> wrote:

> > +	rreq->work.func = netfs_rreq_work;
> > +
> 
> ^^^
> This seems like it should be an INIT_WORK call. I assume you're moving
> this here this because you intend to use netfs_alloc_request for writes
> too?

Interesting question.  INIT_WORK() was called in netfs_alloc_request(), so the
lockdep state has already been initialised and may even have been used already
(say, for instance, we do an RMW cycle buffering in the same request struct).

David