From: Roland Dreier <rdreier@cisco.com>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: kvm-devel@lists.sourceforge.net,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Avi Kivity <avi@qumranet.com>, Al Viro <viro@ftp.linux.org.uk>,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH/RFC 1/2] anon-inodes: Remove fd_install() from anon_inode_getfd()
Date: Wed, 27 Feb 2008 15:42:42 -0800 [thread overview]
Message-ID: <adar6eyx8y5.fsf@cisco.com> (raw)
In-Reply-To: <ada7igqyurw.fsf@cisco.com> (Roland Dreier's message of "Wed, 27 Feb 2008 13:05:55 -0800")
> http://git.kernel.org/?p=linux/kernel/git/viro/vfs-2.6.git;a=commit;h=49be4f8114e6ff0efdab10ebba2493fb67bc3034
Actually, looking closer at the kvm changes here, I think that
create_vcpu_fd() needs the same treatment as kvm_dev_ioctl_create_vm()
gets in the patch because of the race I mentioned in the changelog
for my patch: otherwise kvm_vcpu_release() could drop the last
reference to vcpu->kvm->filp before the get_file() gets an extra
reference.
I'm beginning to think that moving the fd_install() out of
anon_inode_getfd() really is worth it to make a safer interface.
- R.
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next prev parent reply other threads:[~2008-02-27 23:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-25 19:10 [PATCH] uverbs: kill last remaining modular get_empty_filp user Christoph Hellwig
2008-02-27 19:01 ` Roland Dreier
2008-02-27 19:16 ` [PATCH/RFC 1/2] anon-inodes: Remove fd_install() from anon_inode_getfd() Roland Dreier
2008-02-27 19:18 ` [PATCH 2/2] IB/uverbs: Use anonymous inodes instead of private filesystem Roland Dreier
2008-02-27 19:20 ` [PATCH/RFC 1/2] anon-inodes: Remove fd_install() from anon_inode_getfd() Avi Kivity
2008-02-27 19:41 ` Davide Libenzi
2008-02-27 20:14 ` Roland Dreier
2008-02-27 20:30 ` Davide Libenzi
2008-02-27 21:05 ` Roland Dreier
2008-02-27 23:42 ` Roland Dreier [this message]
2008-02-28 7:52 ` Avi Kivity
2008-02-28 20:04 ` Davide Libenzi
2008-02-28 20:24 ` Roland Dreier
2008-02-28 20:52 ` Davide Libenzi
2008-03-05 9:32 ` Avi Kivity
2008-03-06 15:14 ` Christoph Hellwig
2008-03-09 2:45 ` Roland Dreier
2008-03-17 10:40 ` Christoph Hellwig
2008-03-17 10:48 ` Avi Kivity
2008-03-09 2:46 ` Roland Dreier
2008-03-06 15:14 ` Al Viro
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