On Mon, Sep 10, 2012 at 05:22:30PM -0700, Kent Overstreet wrote:
A bunch of what __blk_queue_bounce() was doing was problematic for the
immutable bvec work; this cleans that up and the code is quite a bit
smaller, too.
The __bio_for_each_segment() in copy_to_high_bio_irq() was changed
because that one's looping over the original bio, not the bounce bio -
since the bounce code doesn't own that bio the __ version wasn't
correct.
Also, I can't understand the above at all. I can think why it
wouldn't be necessary but why is it wrong because bounce code doesn't
own it?
--
tejun