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From: Kanchan Joshi <joshi.k@samsung.com>
To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org
Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org,
	anuj20.g@samsung.com, javier.gonz@samsung.com, hare@suse.de
Subject: [RFC PATCH 3/6] io_uring: mark iopoll not supported for uring-cmd
Date: Thu,  5 Aug 2021 18:25:36 +0530	[thread overview]
Message-ID: <20210805125539.66958-4-joshi.k@samsung.com> (raw)
In-Reply-To: <20210805125539.66958-1-joshi.k@samsung.com>

From: Anuj Gupta <anuj20.g@samsung.com>

Currently uring-passthrough doesn't support iopoll. Bail out to avoid
the panic.

Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
---
 fs/io_uring.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index b73bc16c3e70..3361056313a7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3587,6 +3587,11 @@ static int io_uring_cmd_prep(struct io_kiocb *req,
 	if (!req->file->f_op->uring_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


  parent reply	other threads:[~2021-08-05 13:16 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20210805125910epcas5p1100e7093dd2b1ac5bbb751331e2ded23@epcas5p1.samsung.com>
2021-08-05 12:55 ` [RFC PATCH 0/6] Fixed-buffers io_uring passthrough over nvme-char Kanchan Joshi
     [not found]   ` <CGME20210805125917epcas5p4f75c9423a7b886dc79500901cc8f55ab@epcas5p4.samsung.com>
2021-08-05 12:55     ` [RFC PATCH 1/6] io_uring: add infra for uring_cmd completion in submitter-task Kanchan Joshi
     [not found]   ` <CGME20210805125923epcas5p10e6c1b95475440be68f58244d5a3cb9a@epcas5p1.samsung.com>
2021-08-05 12:55     ` [RFC PATCH 2/6] nvme: wire-up support for async-passthru on char-device Kanchan Joshi
2021-09-07  7:46       ` Christoph Hellwig
2021-09-07 16:20         ` Kanchan Joshi
2021-09-08  6:15           ` Christoph Hellwig
2021-09-22  7:19             ` Kanchan Joshi
     [not found]   ` <CGME20210805125927epcas5p28f3413fe3d0a2baed37a05453df0d482@epcas5p2.samsung.com>
2021-08-05 12:55     ` Kanchan Joshi [this message]
     [not found]   ` <CGME20210805125931epcas5p259fec172085ea34fdbf5a1c1f8da5e90@epcas5p2.samsung.com>
2021-08-05 12:55     ` [RFC PATCH 4/6] io_uring: add helper for fixed-buffer uring-cmd Kanchan Joshi
2021-09-07  7:47       ` Christoph Hellwig
     [not found]   ` <CGME20210805125934epcas5p4ff88e95d558ad9f65d77a888a4211b18@epcas5p4.samsung.com>
2021-08-05 12:55     ` [RFC PATCH 5/6] io_uring: add support for uring_cmd with fixed-buffer Kanchan Joshi
2021-09-07  7:48       ` Christoph Hellwig
2021-09-07 16:29         ` Kanchan Joshi
     [not found]   ` <CGME20210805125937epcas5p15667b460e28d87bd40400f69005aafe3@epcas5p1.samsung.com>
2021-08-05 12:55     ` [RFC PATCH 6/6] nvme: enable passthrough " Kanchan Joshi
2021-09-07  7:50       ` Christoph Hellwig
2021-09-07 16:47         ` Kanchan Joshi
2021-09-08  6:16           ` Christoph Hellwig
2021-09-07  7:10   ` [RFC PATCH 0/6] Fixed-buffers io_uring passthrough over nvme-char Christoph Hellwig
2021-09-07 12:38     ` Jens Axboe

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