On Fri, Sep 16, 2022 at 05:00:46AM -0400, Mikulas Patocka wrote: > This patch implements REQ_OP_SECURE_ERASE and REQ_OP_WRITE_ZEROES on brd. > Write zeroes will free the pages just like discard, but the difference is > that it writes zeroes to the preceding and following page if the range is > not aligned on page boundary. Secure erase is just like write zeroes, > except that it clears the page content before freeing the page. What is the use case of this? And just a single overwrite is not what storage standards would consider a secure erase, but then again we don't really have any documentation or standards for the Linux OP, which strongly suggests not actually implementing it for now.
