> > would help making sure we don't get a request sneaking in ?
>
> Hmm not really, there's still a chance that could happen.
Not too familiar with BIO here, but we would need some kind of
"dead" flag to cause a reject of any try to insert a new request
in the queue, don't you think ?
Then, IDE could do something like:
- set dead flag
- wait for all pending requests to drain (easy: insert a barrier
in the queue and wait on it, with a hack for the barrier insertion
to bypass the dead flag... ugh... maybe a blk_terminate_queue()
doing all that would be helpful ?)
- unregister blkdev
- then tear down the queue (leaving the "empty" queue with the dead
flag set, not just memset(...,0,...), so that any bozo keeping a
reference to it will be rejected trying to insert request instead
of trying to tap an uninitalized queue object
What do you think ?
Ben.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Aug 07 2003 - 22:00:21 EST