| 228 | } |
| 229 | |
| 230 | static void cause_overflow(struct io_uring *ring) |
| 231 | { |
| 232 | int i, ret; |
| 233 | |
| 234 | for (i = 0; i < ring->cq.ring_entries; i++) { |
| 235 | struct io_uring_sqe *sqe = io_uring_get_sqe(ring); |
| 236 | |
| 237 | io_uring_prep_nop(sqe); |
| 238 | io_uring_sqe_set_data64(sqe, NOP_USER_DATA); |
| 239 | ret = io_uring_submit(ring); |
| 240 | assert(ret != -1); |
| 241 | } |
| 242 | |
| 243 | } |
| 244 | |
| 245 | static void clear_overflow(struct io_uring *ring) |
| 246 | { |