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    Subject[patch] brd: support barriers
    Hi Jens,
    Do you have a tree I can send this though? Is this the right way to
    do what I want?


    brd is always ordered (not that it matters, as it is defined not to
    survive when the system goes down). So tell the block layer it is
    ordered, which might be of help with testing filesystems.

    Signed-off-by: Nick Piggin <>
    drivers/block/brd.c | 1 +
    1 file changed, 1 insertion(+)

    Index: linux-2.6/drivers/block/brd.c
    --- linux-2.6.orig/drivers/block/brd.c
    +++ linux-2.6/drivers/block/brd.c
    @@ -436,6 +436,7 @@ static struct brd_device *brd_alloc(int
    if (!brd->brd_queue)
    goto out_free_dev;
    blk_queue_make_request(brd->brd_queue, brd_make_request);
    + blk_queue_ordered(brd->brd_queue, QUEUE_ORDERED_TAG, NULL);
    blk_queue_max_sectors(brd->brd_queue, 1024);
    blk_queue_bounce_limit(brd->brd_queue, BLK_BOUNCE_ANY);

     \ /
      Last update: 2009-04-15 10:29    [W:0.019 / U:6.824 seconds]
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