On Thu, Jan 31, 2019 at 5:39 AM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > On Wed, Jan 30, 2019 at 09:08:50AM -0500, John Dorminy wrote: > > (I use WRITE_SAME to fill devices with a particular pattern in order > > to catch failures to initialize disk structures appropriately, > > personally, but it's just for convenience/speed.) > > How do you use it? We don't have a user interface to generate > REQ_OP_WRITE_SAME requests. A not-checked-in test module, similar to Zhang Xiaoxu's reproducer, exposing a sysfs node to trigger filling a block device with a test pattern.
