Re: [PATCH v18 12/12] scsi: ufs: Inform the block layer about write ordering

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To: "axboe@xxxxxxxxx" <axboe@xxxxxxxxx>, "bvanassche@xxxxxxx" <bvanassche@xxxxxxx>
Subject: Re: [PATCH v18 12/12] scsi: ufs: Inform the block layer about write ordering
From: Peter Wang (王信友) <peter.wang@xxxxxxxxxxxx>
Date: Thu, 19 Jun 2025 12:49:42 +0000
Accept-language: zh-TW, en-US
Cc: "avri.altman@xxxxxxx" <avri.altman@xxxxxxx>, "hch@xxxxxx" <hch@xxxxxx>, "quic_cang@xxxxxxxxxxx" <quic_cang@xxxxxxxxxxx>, "quic_nguyenb@xxxxxxxxxxx" <quic_nguyenb@xxxxxxxxxxx>, "linux-scsi@xxxxxxxxxxxxxxx" <linux-scsi@xxxxxxxxxxxxxxx>, "dlemoal@xxxxxxxxxx" <dlemoal@xxxxxxxxxx>, "linux-block@xxxxxxxxxxxxxxx" <linux-block@xxxxxxxxxxxxxxx>, "martin.petersen@xxxxxxxxxx" <martin.petersen@xxxxxxxxxx>
In-reply-to: <20250616223312.1607638-13-bvanassche@acm.org>
References: <20250616223312.1607638-1-bvanassche@acm.org> <20250616223312.1607638-13-bvanassche@acm.org>

Hi Bart,

How can we ensure that there is ordering across different HW queues?
For example, req0 is sent to hwq0 and req1 is sent to hwq1,
but req1 might be dispatched first?

Thanks.
Peter

Follow-Ups:
- Re: [PATCH v18 12/12] scsi: ufs: Inform the block layer about write ordering
  - From: Bart Van Assche

References:
- [PATCH v18 00/12] Improve write performance for zoned UFS devices
  - From: Bart Van Assche
- [PATCH v18 12/12] scsi: ufs: Inform the block layer about write ordering
  - From: Bart Van Assche

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