netdev - Re: 9p EBADF with cache enabled (Was: 9p fs-cache tests/benchmark (was: 9p fscache Duplicate cookie detected))

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1050016.1650537372@warthog.procyon.org.uk>
Date:   Thu, 21 Apr 2022 11:36:12 +0100
From:   David Howells <dhowells@...hat.com>
To:     asmadeus@...ewreck.org
Cc:     dhowells@...hat.com,
        Christian Schoenebeck <linux_oss@...debyte.com>,
        David Kahurani <k.kahurani@...il.com>, davem@...emloft.net,
        ericvh@...il.com, kuba@...nel.org, linux-kernel@...r.kernel.org,
        lucho@...kov.net, netdev@...r.kernel.org,
        v9fs-developer@...ts.sourceforge.net, Greg Kurz <groug@...d.org>
Subject: Re: 9p EBADF with cache enabled (Was: 9p fs-cache tests/benchmark (was: 9p fscache Duplicate cookie detected))

asmadeus@...ewreck.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