diff options
| author | Breno Leitao <leitao@debian.org> | 2023-05-04 05:18:54 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-05-04 08:19:05 -0600 |
| commit | 96c7d4f81db0fea05c0792f7563ae0cb4ad5f022 (patch) | |
| tree | 3ba7822915e1b177a9680b19d0cf4a1b1b35a141 /io_uring | |
| parent | 776617db78c6d208780e7c69d4d68d1fa82913de (diff) | |
| download | linux-96c7d4f81db0fea05c0792f7563ae0cb4ad5f022.tar.gz | |
io_uring: Create a helper to return the SQE size
Create a simple helper that returns the size of the SQE. The SQE could
have two size, depending of the flags.
If IO_URING_SETUP_SQE128 flag is set, then return a double SQE,
otherwise returns the sizeof of io_uring_sqe (64 bytes).
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20230504121856.904491-2-leitao@debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index 25515d69d205..259bf798a390 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -394,4 +394,14 @@ static inline void io_req_queue_tw_complete(struct io_kiocb *req, s32 res) io_req_task_work_add(req); } +/* + * IORING_SETUP_SQE128 contexts allocate twice the normal SQE size for each + * slot. + */ +static inline size_t uring_sqe_size(struct io_ring_ctx *ctx) +{ + if (ctx->flags & IORING_SETUP_SQE128) + return 2 * sizeof(struct io_uring_sqe); + return sizeof(struct io_uring_sqe); +} #endif |