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    SubjectRe: [PATCH] Bio Traversal Changes (Patch 2/4: biotr8-blkusers.diff)
    Corresponding modifications needed in code above block layer
    to account for bio traversal changes, mainly ensuring correct
    bi_voffset initialization when setting up bios.


    diff -ur linux-2.5.30-pure/fs/direct-io.c linux-2.5.30-bio/fs/direct-io.c
    --- linux-2.5.30-pure/fs/direct-io.c Fri Aug 2 10:08:29 2002
    +++ linux-2.5.30-bio/fs/direct-io.c Fri Aug 2 10:42:13 2002
    @@ -193,6 +193,9 @@

    bio->bi_vcnt = bio->bi_idx;
    bio->bi_idx = 0;
    + bio->bi_voffset = __BVEC_START(bio)->bv_offset;
    + bio->bi_endvoffset = __BVEC_END(bio)->bv_offset +
    + __BVEC_END(bio)->bv_len;
    bio->bi_private = dio;
    atomic_inc(&dio->bio_count);
    submit_bio(dio->rw, bio);
    diff -ur linux-2.5.30-pure/fs/jfs/jfs_logmgr.c linux-2.5.30-bio/fs/jfs/jfs_logmgr.c
    --- linux-2.5.30-pure/fs/jfs/jfs_logmgr.c Sat Jul 27 08:28:38 2002
    +++ linux-2.5.30-bio/fs/jfs/jfs_logmgr.c Fri Aug 2 10:42:13 2002
    @@ -1817,6 +1817,9 @@
    bio->bi_vcnt = 1;
    bio->bi_idx = 0;
    bio->bi_size = LOGPSIZE;
    + bio->bi_voffset = __BVEC_START(bio)->bv_offset;
    + bio->bi_endvoffset = __BVEC_END(bio)->bv_offset +
    + __BVEC_END(bio)->bv_len;

    bio->bi_end_io = lbmIODone;
    bio->bi_private = bp;
    @@ -1959,6 +1962,9 @@
    bio->bi_vcnt = 1;
    bio->bi_idx = 0;
    bio->bi_size = LOGPSIZE;
    + bio->bi_voffset = __BVEC_START(bio)->bv_offset;
    + bio->bi_endvoffset = __BVEC_END(bio)->bv_offset +
    + __BVEC_END(bio)->bv_len;

    bio->bi_end_io = lbmIODone;
    bio->bi_private = bp;
    diff -ur linux-2.5.30-pure/fs/mpage.c linux-2.5.30-bio/fs/mpage.c
    --- linux-2.5.30-pure/fs/mpage.c Sat Jul 27 08:28:32 2002
    +++ linux-2.5.30-bio/fs/mpage.c Fri Aug 2 10:42:13 2002
    @@ -82,6 +82,9 @@
    {
    bio->bi_vcnt = bio->bi_idx;
    bio->bi_idx = 0;
    + bio->bi_voffset = __BVEC_START(bio)->bv_offset;
    + bio->bi_endvoffset = __BVEC_END(bio)->bv_offset +
    + __BVEC_END(bio)->bv_len;
    bio->bi_end_io = mpage_end_io_read;
    if (rw == WRITE)
    bio->bi_end_io = mpage_end_io_write;
    diff -ur linux-2.5.30-pure/mm/page_io.c linux-2.5.30-bio/mm/page_io.c
    --- linux-2.5.30-pure/mm/page_io.c Fri Aug 2 10:08:31 2002
    +++ linux-2.5.30-bio/mm/page_io.c Fri Aug 2 10:42:13 2002
    @@ -42,6 +42,9 @@
    bio->bi_vcnt = 1;
    bio->bi_idx = 0;
    bio->bi_size = PAGE_SIZE;
    + bio->bi_voffset = __BVEC_START(bio)->bv_offset;
    + bio->bi_endvoffset = __BVEC_END(bio)->bv_offset +
    + __BVEC_END(bio)->bv_len;
    bio->bi_end_io = end_io;
    }
    return bio;
    -
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