[PATCH] Request queue micropatch
FYI, I have gotten some most strange results with the equivalent of: request_queue_t *q = kmalloc(...); blk_init_queue(q, ...) The problem turns out to be that q->backing_dev_info.memory_backed is not initialized, leaving it to be whatever was there before. The end result is that my "driver" never saw write requests, but reads came through fine. Took a while to figure out that one... Here's the fix, for what it's worth. (I had, BTW, tried just zeroing the whole structure in blk_init_queue(), but that makes IDE oops at boot - it sets q->queuedata early).
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