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    SubjectRe: 2.6.35-rc2 module reference counting broken
    Hello,

    On 06/10/2010 08:34 AM, Jari Ruusu wrote:
    > Later in the mount system call handling the module refrence count is
    > incremented. But to me that looks like there is a window of opportunity for
    > things to go wrong. What is there to prevent module from being removed at
    > zero refcount?

    It can be removed, in which case blkdev_get() fails and the whole open
    attempt fails, which is the expected behavior. Claiming block just
    needs access to the containing struct block_device, caring for the
    actual device and backing module is blkdev_get()'s job.

    Thanks.

    --
    tejun


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