This series contains some prep work, then two patches that once and for all cleanup the sqe handling. After this patchset, the prep and issue handling is fully split, so each opcode has a prep handler that is called in the same way, and an issue handler that doesn't call the prep handler. The sqe pointer is removed from io_kiocb, so there cannot be any accidental dereference after we've done prep. Prep is always done in the original context, so we can have no reuse issues either. I've rebased for-5.6/io_uring to have this series first, so this series applies on top of io_uring-5.5. Ideally we'd put this into 5.5, but... In any case, please take a look, I think this is a massive improvement in terms of verifying that we're doing the right thing. fs/io_uring.c | 690 ++++++++++++++++++++++++++------------------------ 1 file changed, 355 insertions(+), 335 deletions(-) -- Jens Axboe
