From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-nvme@lists.infradead.org, Stefan Roesch <shr@fb.com>
Subject: Re: [PATCH 4/5] nvme: split out metadata vs non metadata end_io uring_cmd completions
Date: Fri, 23 Sep 2022 08:21:19 -0700 [thread overview]
Message-ID: <Yy3O7wH16t6AhC3j@infradead.org> (raw)
In-Reply-To: <20220922182805.96173-5-axboe@kernel.dk>
> + union {
> + struct {
> + void *meta; /* kernel-resident buffer */
> + void __user *meta_buffer;
> + };
> + struct {
> + u32 nvme_flags;
> + u32 nvme_status;
> + u64 result;
> + };
> + };
Without naming the arms of the union this is becoming a bit too much
of a mess..
> +static void nvme_uring_task_cb(struct io_uring_cmd *ioucmd)
> +{
> + struct nvme_uring_cmd_pdu *pdu = nvme_uring_cmd_pdu(ioucmd);
> + int status;
> +
> + if (pdu->nvme_flags & NVME_REQ_CANCELLED)
> + status = -EINTR;
> + else
> + status = pdu->nvme_status;
If you add a signed int field you only need one field instead of
two in the pdu for this (the nvme status is only 15 bits anyway).
next prev parent reply other threads:[~2022-09-23 15:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 18:28 [PATCHSET 0/5] Enable alloc caching and batched freeing for passthrough Jens Axboe
2022-09-22 18:28 ` [PATCH 1/5] block: enable batched allocation for blk_mq_alloc_request() Jens Axboe
2022-09-23 14:52 ` Pankaj Raghav
2022-09-23 15:13 ` Pankaj Raghav
2022-09-23 20:54 ` Jens Axboe
2022-09-24 0:59 ` Damien Le Moal
2022-09-24 1:01 ` Jens Axboe
2022-09-24 1:22 ` Damien Le Moal
2022-09-24 11:56 ` Pankaj Raghav
2022-09-24 14:44 ` Jens Axboe
2022-09-22 18:28 ` [PATCH 2/5] block: change request end_io handler to pass back a return value Jens Axboe
2022-09-22 18:28 ` [PATCH 3/5] block: allow end_io based requests in the completion batch handling Jens Axboe
2022-09-22 18:28 ` [PATCH 4/5] nvme: split out metadata vs non metadata end_io uring_cmd completions Jens Axboe
2022-09-23 15:21 ` Christoph Hellwig [this message]
2022-09-23 20:52 ` Jens Axboe
2022-09-26 14:41 ` Christoph Hellwig
2022-09-26 14:41 ` Jens Axboe
2022-09-26 14:43 ` Christoph Hellwig
2022-09-26 14:50 ` Jens Axboe
2022-09-26 14:52 ` Christoph Hellwig
2022-09-26 14:54 ` Jens Axboe
2022-09-22 18:28 ` [PATCH 5/5] nvme: enable batched completions of passthrough IO Jens Axboe
2022-09-23 15:16 ` [PATCHSET 0/5] Enable alloc caching and batched freeing for passthrough Christoph Hellwig
2022-09-23 15:19 ` Jens Axboe
2022-09-23 15:21 ` Christoph Hellwig
2022-09-23 15:22 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2022-09-27 1:44 [PATCHSET v2 " Jens Axboe
2022-09-27 1:44 ` [PATCH 4/5] nvme: split out metadata vs non metadata end_io uring_cmd completions Jens Axboe
2022-09-27 7:50 ` Christoph Hellwig
2022-09-28 13:51 ` Anuj gupta
2022-09-28 14:47 ` Sagi Grimberg
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