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From: Keith Busch <kbusch@kernel.org>
To: Yuanyuan Zhong <yzhong@purestorage.com>
Cc: Chaitanya.Kulkarni@wdc.com, axboe@fb.com, hch@lst.de,
	sagi@grimberg.me, linux-nvme@lists.infradead.org,
	cachen@purestorage.com
Subject: Re: [PATCH v2] nvme-core: initialize status to NVME_SC_HOST_PATH_ERROR
Date: Thu, 15 Apr 2021 12:30:30 -0700
Message-ID: <20210415193030.GA2452080@dhcp-10-100-145-180.wdc.com> (raw)
In-Reply-To: <20210414170833.24929-1-yzhong@purestorage.com>

On Wed, Apr 14, 2021 at 11:08:33AM -0600, Yuanyuan Zhong wrote:
> Block layer blk_end_sync_rq() silently drops blk_status_t error.
> When ->queue_rq returns error, nvme driver should set nvme status
> explicitly. Otherwise the passthrough command may take the stale
> status as result. A typical value zero will be interpreted as
> NVME_SC_SUCCESS, despite the dispatching error from ->queue_rq.
> 
> Instead of trying to fix it for every error return, this change
> initialize the status to NVME_SC_HOST_PATH_ERROR during
> nvme_clear_nvme_request().

It doesn't look like these types of errors are unique to nvme. Could we
not just have blk_execute_rq() return an error instead?

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Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-12 23:45 [PATCH] " Yuanyuan Zhong
2021-04-13  3:19 ` Chaitanya Kulkarni
2021-04-14 17:08   ` [PATCH v2] " Yuanyuan Zhong
2021-04-15 19:30     ` Keith Busch [this message]
2021-04-15 20:17       ` Keith Busch
2021-04-15 22:11         ` Yuanyuan Zhong
2021-04-15 22:58           ` Keith Busch

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