[resend PATCH v2 32/33] filesystem-dax: gate calls to dax_flush() on QUEUE_FLAG_WC

Some platforms arrange for cpu caches to be flushed on power-fail. On those platforms there is no requirement that the kernel track and flush potentially dirty cache lines. Given that we still insert entries into the radix for locking purposes this patch only disables the cache flush loop, not the

[PATCH v2 32/33] filesystem-dax: gate calls to dax_flush() on QUEUE_FLAG_WC

Some platforms arrange for cpu caches to be flushed on power-fail. On those platforms there is no requirement that the kernel track and flush potentially dirty cache lines. Given that we still insert entries into the radix for locking purposes this patch only disables the cache flush loop, not the