> 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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