Re: [PATCH v2 1/2] fscache: Use wait_on_bit() to wait for the freeing of relinquished volume

[David Howells]

Hou Tao <houtao@xxxxxxxxxxxxxxx> wrote:

>  			clear_bit(FSCACHE_VOLUME_ACQUIRE_PENDING, &cursor->flags);
> +			/*
> +			 * Paired with barrier in wait_on_bit(). Check
> +			 * wake_up_bit() and waitqueue_active() for details.
> +			 */
> +			smp_mb__after_atomic();
>  			wake_up_bit(&cursor->flags, FSCACHE_VOLUME_ACQUIRE_PENDING);

What two values are you applying a partial ordering to?

David