linux-kernel - Re: [PATCH v4 38/68] vfs, cachefiles: Mark a backing file in use with an inode flag

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Message-ID: <3735739.1641814315@warthog.procyon.org.uk>
Date:   Mon, 10 Jan 2022 11:31:55 +0000
From:   David Howells <dhowells@...hat.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     dhowells@...hat.com, Matthew Wilcox <willy@...radead.org>,
        Amir Goldstein <amir73il@...il.com>, linux-cachefs@...hat.com,
        Trond Myklebust <trondmy@...merspace.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Steve French <sfrench@...ba.org>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Jeff Layton <jlayton@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Omar Sandoval <osandov@...ndov.com>,
        JeffleXu <jefflexu@...ux.alibaba.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-afs@...ts.infradead.org,
        Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        CIFS <linux-cifs@...r.kernel.org>,
        ceph-devel <ceph-devel@...r.kernel.org>,
        v9fs-developer@...ts.sourceforge.net,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 38/68] vfs, cachefiles: Mark a backing file in use with an inode flag

Christoph Hellwig <hch@...radead.org> wrote:

> So let's name it that way.  We have plenty of files in kernel use using
> filp_open and this flag very obviously means something else.

S_KERNEL_LOCK?

David