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From:   David Howells <dhowells@redhat.com>
In-Reply-To: <YlySEa6QGmIHlrdG@codewreck.org>
References: <YlySEa6QGmIHlrdG@codewreck.org> <CAAZOf26g-L2nSV-Siw6mwWQv1nv6on8c0fWqB4bKmX73QAFzow@mail.gmail.com> <2551609.RCmPuZc3Qn@silver> <YlwOdqVCBZKFTIfC@codewreck.org> <8420857.9FB56xACZ5@silver> <YlyFEuTY7tASl8aY@codewreck.org>
To:     asmadeus@codewreck.org
Cc:     dhowells@redhat.com,
        Christian Schoenebeck <linux_oss@crudebyte.com>,
        David Kahurani <k.kahurani@gmail.com>, davem@davemloft.net,
        ericvh@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org,
        lucho@ionkov.net, netdev@vger.kernel.org,
        v9fs-developer@lists.sourceforge.net, Greg Kurz <groug@kaod.org>
Subject: Re: 9p EBADF with cache enabled (Was: 9p fs-cache tests/benchmark (was: 9p fscache Duplicate cookie detected))
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Date:   Thu, 21 Apr 2022 11:36:12 +0100
Message-ID: <1050016.1650537372@warthog.procyon.org.uk>
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asmadeus@codewreck.org wrote:

> 	int fd = open(argv[1], O_WRONLY|O_APPEND);
> 	if (fd < 0)
> 		return 1;
> 	if (write(fd, "test\n", 5) < 0)

I think I need to implement the ability to store writes in non-uptodate pages
without needing to read from the server as NFS does.  This may fix the
performance drop also.

David