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22b970497

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    Keith Busch authored and Sagi Grimberg committed
    The namespace disk names must be unique for the lifetime of the
    subsystem. This was accomplished by using their parent subsystems'
    instances which were allocated independently from the controllers
    connected to that subsystem. This allowed name prefixes assigned to
    namespaces to match a controller from an unrelated subsystem, and has
    created confusion among users examining device nodes.
    
    Ensure a namespace's subsystem instance never clashes with a controller
    instance of another subsystem by transferring the instance ownership
    to the parent subsystem from the first controller discovered in that
    subsystem.
    
    Reviewed-by: default avatarLogan Gunthorpe <logang@deltatee.com>
    Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
    Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
    Reviewed-by: default avatarMinwoo Im <minwoo.im@samsung.com>
    Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
    Reviewed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
    Signed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
    733e4b69
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