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    Subject[PATCH 007 of 10] md: notify userspace on 'stop' events

    From: Dan Williams <dan.j.williams@intel.com>

    This additional notification to 'array_state' is needed to allow the monitor
    application to learn about stop events via sysfs. The
    sysfs_notify("sync_action") call that comes at the end of do_md_stop() (via
    md_new_event) is insufficient since the 'sync_action' attribute has been
    removed by this point.

    (Seems like a sysfs-notify-on-removal patch is a better fix. Currently removal
    updates the event count but does not wake up waiters)

    Signed-off-by: Dan Williams <dan.j.williams@intel.com>
    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 2008-05-19 11:03:43.000000000 +1000
    +++ ./drivers/md/md.c 2008-05-19 11:03:47.000000000 +1000
    @@ -3691,6 +3691,8 @@ static int do_md_stop(mddev_t * mddev, i

    module_put(mddev->pers->owner);
    mddev->pers = NULL;
    + /* tell userspace to handle 'inactive' */
    + sysfs_notify(&mddev->kobj, NULL, "array_state");

    set_capacity(disk, 0);
    mddev->changed = 1;

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      Last update: 2008-05-19 03:15    [W:0.037 / U:1.148 seconds]
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