On Sat, Mar 11, 2017 at 02:15:10AM -0800, Eric Biggers wrote: > stat() instead initializes its struct on the stack and copies it to > userspace with a single call to copy_to_user(). This turns out to be > much faster, and changing statx to do this makes it almost as fast as > stat: Hmm, I missed that the access_ok() check in sys_statx() will no longer be needed. I'm sending a revised patch that removes that too. Eric