From: Christoph Hellwig <[email protected]>
To: Keith Busch <[email protected]>
Cc: Kanchan Joshi <[email protected]>,
[email protected], [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: Re: [RFC PATCH v3 3/3] nvme: wire up support for async passthrough
Date: Wed, 17 Mar 2021 18:02:12 +0100 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Wed, Mar 17, 2021 at 09:45:50AM -0700, Keith Busch wrote:
> > + if (ioucmd) { /* async handling */
> > + u32 effects;
> > +
> > + effects = nvme_command_effects(ns->ctrl, ns, cmd->common.opcode);
> > + /* filter commands with non-zero effects, keep it simple for now*/
>
> You shouldn't need to be concerned with this. You've wired up the ioucmd
> only to the NVME_IOCTL_IO_CMD, and nvme_command_effects() can only
> return 0 for that.
>
> It would be worth adding support for NVME_IOCTL_IO_CMD64 too, though,
> and that doesn't change the effects handling either.
There is no good reason to support the non-64 structure in new code.
And we really should support the admin command submission (on the char
device node) as well.
next prev parent reply other threads:[~2021-03-17 17:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20210316140229epcas5p23d68a4c9694bbf7759b5901115a4309b@epcas5p2.samsung.com>
2021-03-16 14:01 ` [RFC PATCH v3 0/3] Async nvme passthrough over io_uring Kanchan Joshi
[not found] ` <CGME20210316140233epcas5p372405e7cb302c61dba5e1094fa796513@epcas5p3.samsung.com>
2021-03-16 14:01 ` [RFC PATCH v3 1/3] io_uring: add helper for uring_cmd completion in submitter-task Kanchan Joshi
2021-03-16 15:43 ` Stefan Metzmacher
2021-03-18 1:57 ` Jens Axboe
2021-03-18 5:25 ` Kanchan Joshi
2021-03-18 5:48 ` Christoph Hellwig
2021-03-18 6:14 ` Kanchan Joshi
[not found] ` <CGME20210316140236epcas5p4de087ee51a862402146fbbc621d4d4c6@epcas5p4.samsung.com>
2021-03-16 14:01 ` [RFC PATCH v3 2/3] nvme: keep nvme_command instead of pointer to it Kanchan Joshi
2021-03-16 17:16 ` Keith Busch
2021-03-17 9:38 ` Kanchan Joshi
2021-03-17 14:17 ` Keith Busch
[not found] ` <CGME20210316140240epcas5p3e71bfe2afecd728c5af60056f21cc9b7@epcas5p3.samsung.com>
2021-03-16 14:01 ` [RFC PATCH v3 3/3] nvme: wire up support for async passthrough Kanchan Joshi
2021-03-17 8:52 ` Christoph Hellwig
2021-03-17 16:49 ` Jens Axboe
2021-03-17 16:59 ` Christoph Hellwig
2021-03-17 17:21 ` Jens Axboe
2021-03-17 18:59 ` Jens Axboe
2021-03-18 5:54 ` Kanchan Joshi
2021-03-17 16:45 ` Keith Busch
2021-03-17 17:02 ` Christoph Hellwig [this message]
2021-03-16 15:51 ` [RFC PATCH v3 0/3] Async nvme passthrough over io_uring Jens Axboe
2021-03-17 9:31 ` Kanchan Joshi
2021-03-18 1:58 ` Jens Axboe
2021-03-18 7:47 ` Kanchan Joshi
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