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    Btrfs: add DEVICE_READY ioctl · 02db0844
    Josef Bacik 提交于
    This will be used in conjunction with btrfs device ready <dev>.  This is
    needed for initrd's to have a nice and lightweight way to tell if all of the
    devices needed for a file system are in the cache currently.  This keeps
    them from having to do mount+sleep loops waiting for devices to show up.
    Thanks,
    Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
    02db0844
super.c 42.5 KB