On Thu, Aug 22, 2024 at 04:35:57AM +0100, Pavel Begunkov wrote: > Add yet another io_uring cmd implementing async secure erases. > It has same page cache races as async discards and write zeroes and > reuses the common paths in general. How did you test this? Asking because my interruption fix for secure discard is still pending because I could not find a test environment for it. And also because for a "secure" [1] erase proper invalidation of the page cache actually matters, as otherwise you can still leak data to the device. [2] LBA based "secure" erase can't actually be secure on any storage device that can write out of place. Which is all of flash, but also modern HDDs when encountering error. It's a really bad interface we should never have have started to support.
