This patchset converts some of the users of struct request on the
stack to use blk_get_request (as discussed in the large command
support thread [*1]).
IDE has the most users of the on-stack struct request. The on-stack
struct request has the benefit that it'll always work but I think that
using blk_get_request properly make the code clearer.
I've not got rid of all the on-stack struct request yet, but at least
this patchset removes the users of struct request that calls
blk_put_request. That is, we can remove the following hack in
blk_put_request:
/*
* Gee, IDE calls in w/ NULL q. Fix IDE and remove the
* following if (q) test.
*/
if (q) {
spin_lock_irqsave(q->queue_lock, flags);
__blk_put_request(q, req);
spin_unlock_irqrestore(q->queue_lock, flags);
}
This patchset is against Bartlomiej's ide tree. #1-9 patches are for
the IDE subsystem and #10-11 are for the block layer. #10-11 depends
on #1-9 so probably it would be easier to push all the patch via a
single tree.
[*1]
http://marc.info/?l=linux-scsi&m=120817161219068&w=2
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