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Date:   Fri, 22 Jan 2021 11:01:29 -0500
From:   "J. Bruce Fields" <bfields@fieldses.org>
To:     David Howells <dhowells@redhat.com>
Cc:     Trond Myklebust <trondmy@hammerspace.com>,
        Anna Schumaker <anna.schumaker@netapp.com>,
        Steve French <sfrench@samba.org>,
        Dominique Martinet <asmadeus@codewreck.org>,
        Takashi Iwai <tiwai@suse.de>,
        Matthew Wilcox <willy@infradead.org>,
        linux-afs@lists.infradead.org, Jeff Layton <jlayton@redhat.com>,
        David Wysochanski <dwysocha@redhat.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        linux-cachefs@redhat.com, linux-nfs@vger.kernel.org,
        linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org,
        v9fs-developer@lists.sourceforge.net,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 00/25] Network fs helper library & fscache kiocb API
Message-ID: <20210122160129.GB18583@fieldses.org>
References: <20210121190937.GE20964@fieldses.org>
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On Thu, Jan 21, 2021 at 08:08:24PM +0000, David Howells wrote:
> J. Bruce Fields <bfields@fieldses.org> wrote:
> > So, I'm still confused: there must be some case where we know fscache
> > actually works reliably and doesn't corrupt your data, right?
> 
> Using ext2/3, for example.  I don't know under what circumstances xfs, ext4
> and btrfs might insert/remove blocks of zeros, but I'm told it can happen.

Do ext2/3 work well for fscache in other ways?

--b.