• Jens Axboe's avatar
    [PATCH] bio walking code · 21eca852
    Jens Axboe authored
    Add bio traversal functionality. This is a prereq for doing ide
    multiwrites safely and sanely. Patch was originally done by Suparna,
    Bartlomiej picked it up and changed the design somewhat. From Bart:
    
    Main idea is now reversed - instead of introducing rq->hard_bio as
    pointer for bio to be completed and using rq->bio as pointer for bio
    to be submitted, rq->cbio is introduced for submissions and rq->bio
    is used for completions
    
    This minimizes changes to block layer and assures that all existing
    block users are not affected by this patch.
    21eca852
ll_rw_blk.c 60.5 KB