[Bug 11898] mke2fs hang on AIC79 device.

[bugme-daemon@bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=11898





------- Comment #6 from yanmin_zhang@linux.intel.com  2008-11-03 23:37 -------
The hang palce is spin_lock_irq(q->queue_lock) in function scsi_request_fn:

 not_ready:
        spin_unlock_irq(shost->host_lock);

        /*
         * lock q, handle tag, requeue req, and decrement device_busy. We
         * must return with queue_lock held.
         *
         * Decrementing device_busy without checking it is OK, as all such
         * cases (host limits or settings) should run the queue at some
         * later time.
         */
======>        spin_lock_irq(q->queue_lock);
        blk_requeue_request(q, req);
        sdev->device_busy--;
        if(sdev->device_busy == 0)
                blk_plug_device(q);


-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.