On Tue, 2019-04-02 at 20:06 +0800, Yufen Yu wrote:
> diff --git a/block/genhd.c b/block/genhd.c
> index 961b2bc4634f..a4ef0068dbb2 100644
> --- a/block/genhd.c
> +++ b/block/genhd.c
> @@ -529,6 +529,18 @@ void blk_free_devt(dev_t devt)
> }
> }
>
> +/**
> + * We invalidate devt by assigning NULL pointer for devt in idr.
> + */
> +void blk_invalidate_devt(dev_t devt)
> +{
> + if (MAJOR(devt) == BLOCK_EXT_MAJOR) {
> + spin_lock_bh(&ext_devt_lock);
> + idr_replace(&ext_devt_idr, NULL,
> blk_mangle_minor(MINOR(devt)));
> + spin_unlock_bh(&ext_devt_lock);
> + }
> +}
Did you perhaps copy the above code from blk_free_devt()? If so, please modify
blk_free_devt() such that it calls blk_invalidate_devt() instead of introducing
a
copy of most of blk_free_devt().
Thanks,
Bart.
