When a request crosses a boundary between devices, it needs to be split. But where we should calculate the amount of the request before the boundary to find the split-point, we care currently calculating the amount that is *after* the boundary !!! Signed-off-by: Neil Brown <neilb@xxxxxxxxxxxxxxx> ### Diffstat output ./drivers/md/linear.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) diff ./drivers/md/linear.c~current~ ./drivers/md/linear.c --- ./drivers/md/linear.c~current~ 2005-05-10 14:25:28.000000000 +1000 +++ ./drivers/md/linear.c 2005-05-10 14:26:45.000000000 +1000 @@ -269,9 +269,8 @@ static int linear_make_request (request_ * split it. */ struct bio_pair *bp; - bp = bio_split(bio, bio_split_pool, - (bio->bi_sector + (bio->bi_size >> 9) - - (tmp_dev->offset + tmp_dev->size))<<1); + bp = bio_split(bio, bio_split_pool, + ((tmp_dev->offset + tmp_dev->size)<<1) - bio->bi_sector); if (linear_make_request(q, &bp->bio1)) generic_make_request(&bp->bio1); if (linear_make_request(q, &bp->bio2)) - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
