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Jens Axboe authored
Bart did this patch, I changed it a bit. Basically it cleans the mapping interface up a bit, and adds a little helper to set up the request from the bio. In addition, it fixes a long standing bug where bio_map_user() would call blk_queue_bounce() without the direction bit being set, auch. - Abstract out bio request preparation - Have bio_map_user() set data direction (fixes bug where blk_queue_bounce() is called without it set) - Split bio_map_user() in two
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