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| author |  Jens Axboe <axboe@kernel.dk>
| 2022-05-25 06:04:14 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk>
| 2022-07-24 18:39:11 -0600 |
| commit | 4cf90495281b43f5f597ef4a9abcc83a63973571 (patch) | |
| tree | 76651d3e4e0337a687926c3af80ae15662caf141 /io_uring/io_uring.c | |
| parent | io_uring: move uring_cmd handling to its own file (diff) | |
| download | linux-4cf90495281b43f5f597ef4a9abcc83a63973571.tar.gz linux-4cf90495281b43f5f597ef4a9abcc83a63973571.tar.bz2 linux-4cf90495281b43f5f597ef4a9abcc83a63973571.zip | |
io_uring: add a dummy -EOPNOTSUPP prep handler
Add it and use it for the epoll handling, if epoll isn't configured.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
| -rw-r--r-- | io_uring/io_uring.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 469d89f3cf0c..15d0377b7d9d 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -4034,10 +4034,16 @@ err: return IOU_ISSUE_SKIP_COMPLETE; } +static __maybe_unused int io_eopnotsupp_prep(struct io_kiocb *kiocb, + const struct io_uring_sqe *sqe) +{ + return -EOPNOTSUPP; +} + +#if defined(CONFIG_EPOLL) static int io_epoll_ctl_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { -#if defined(CONFIG_EPOLL) struct io_epoll *epoll = io_kiocb_to_cmd(req); if (sqe->buf_index || sqe->splice_fd_in) @@ -4056,14 +4062,10 @@ static int io_epoll_ctl_prep(struct io_kiocb *req, } return 0; -#else - return -EOPNOTSUPP; -#endif } static int io_epoll_ctl(struct io_kiocb *req, unsigned int issue_flags) { -#if defined(CONFIG_EPOLL) struct io_epoll *ie = io_kiocb_to_cmd(req); int ret; bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK; @@ -4076,10 +4078,8 @@ static int io_epoll_ctl(struct io_kiocb *req, unsigned int issue_flags) req_set_fail(req); io_req_set_res(req, ret, 0); return IOU_OK; -#else - return -EOPNOTSUPP; -#endif } +#endif static int io_statx_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { @@ -11246,8 +11246,12 @@ static const struct io_op_def io_op_defs[] = { [IORING_OP_EPOLL_CTL] = { .unbound_nonreg_file = 1, .audit_skip = 1, +#if defined(CONFIG_EPOLL) .prep = io_epoll_ctl_prep, .issue = io_epoll_ctl, +#else + .prep = io_eopnotsupp_prep, +#endif }, [IORING_OP_SPLICE] = { .needs_file = 1, @@ -11418,7 +11422,8 @@ static int __init io_uring_init(void) for (i = 0; i < ARRAY_SIZE(io_op_defs); i++) { BUG_ON(!io_op_defs[i].prep); - BUG_ON(!io_op_defs[i].issue); + if (io_op_defs[i].prep != io_eopnotsupp_prep) + BUG_ON(!io_op_defs[i].issue); } req_cachep = KMEM_CACHE(io_kiocb, SLAB_HWCACHE_ALIGN | SLAB_PANIC | |