1. 18 Sep, 2002 3 commits
    • Jens Axboe's avatar
      [PATCH] make mpage use bio_add_page() · cf780a87
      Jens Axboe authored
      This makes mpage use bio_add_page().  It has the added advantage that
      users don't need to have deep knowledge about what the different bio
      fields mean, nor does it have to abuse some of them while building the
      bio.
      cf780a87
    • Jens Axboe's avatar
      [PATCH] bio_add_page() · f8b46092
      Jens Axboe authored
      This is bio_add_page(), 100% identical to the version I sent out for
      comments earlier this week.  With the previous queue restriction patch,
      this guarentees that we can always add a page worth of data to the bio.
      bio_add_page() returns 0 on success, and 1 on failure.  Either the page
      is added completely, or the attempt is aborted.
      
      bio_add_page() uses the normal queue restrictions to determine whether
      we an add the page or not. if a queue has further restrictions, it can
      define a q->merge_bvec_fn() to further impose limits.
      
      Patch also includes changes to ll_rw_kio(), if for nothing else to
      demonstrate how to use this piece of instrastructure.
      f8b46092
    • Jens Axboe's avatar
      [PATCH] impose sane queue restrictions · efbb72f9
      Jens Axboe authored
      Impose sane limits on queue restrictions. that means:
      
       - q->max_sectors must be able to at least span a page
       - q->max_phys_segments and q->max_hw_segments must be at least 1
       - q->max_segment_size must be at least page sized
       - q->seg_boundary_mask must be at least PAGE_CACHE_SIZE-1
      efbb72f9
  2. 17 Sep, 2002 37 commits