[RFC 03/13] io_uring: mark iopoll not supported for uring-cmd
From: Kanchan Joshi <hidden>
Date: 2021-12-21 02:56:25
Also in:
io-uring, linux-nvme
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
From: Anuj Gupta <redacted> Currently uring-passthrough doesn't support iopoll. Bail out to avoid the panic. Signed-off-by: Anuj Gupta <redacted> --- fs/io_uring.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 246f1085404d..1061b4cde4be 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c@@ -4131,6 +4131,11 @@ static int io_uring_cmd_prep(struct io_kiocb *req, if (!req->file->f_op->async_cmd) return -EOPNOTSUPP; + if (req->ctx->flags & IORING_SETUP_IOPOLL) { + printk_once(KERN_WARNING "io_uring: iopoll not supported!\n"); + return -EOPNOTSUPP; + } + cmd->op = READ_ONCE(csqe->op); cmd->len = READ_ONCE(csqe->len);
--
2.25.1