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    Subject[PATCH 002 of 9] md: Skip all metadata update processing when using external metadata.

    All the metadata update processing for external metadata is on
    in user-space or through the sysfs interfaces, so make "md_update_sb"
    a no-op in that case.

    Signed-off-by: Neil Brown <neilb@suse.de>

    ### Diffstat output
    ./drivers/md/md.c | 2 ++
    1 file changed, 2 insertions(+)

    diff .prev/drivers/md/md.c ./drivers/md/md.c
    --- .prev/drivers/md/md.c 2008-04-29 12:27:55.000000000 +1000
    +++ ./drivers/md/md.c 2008-04-29 12:27:56.000000000 +1000
    @@ -1651,6 +1651,8 @@ static void md_update_sb(mddev_t * mddev
    int sync_req;
    int nospares = 0;

    + if (mddev->external)
    + return;
    repeat:
    spin_lock_irq(&mddev->write_lock);


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