linux-kernel - Re: [PATCH v3 3/5] scsi: ufs: use WQ

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Date:   Mon, 26 Oct 2020 11:27:38 -0700
From:   asutoshd@...eaurora.org
To:     Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com,
        cang@...eaurora.org, alim.akhtar@...sung.com, avri.altman@....com,
        bvanassche@....org, Jaegeuk Kim <jaegeuk@...gle.com>
Subject: Re: [PATCH v3 3/5] scsi: ufs: use WQ_HIGHPRI for gating work

On 2020-10-24 08:06, Jaegeuk Kim wrote:
> From: Jaegeuk Kim <jaegeuk@...gle.com>
> 
> Must have WQ_MEM_RECLAIM
> ``WQ_MEM_RECLAIM``
>   All wq which might be used in the memory reclaim paths **MUST**
>   have this flag set.  The wq is guaranteed to have at least one
>   execution context regardless of memory pressure.
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@...gle.com>
> ---

Reviewed-by: Asutosh Das <asutoshd@...eaurora.org>

>  drivers/scsi/ufs/ufshcd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 011e80a21170..bc0d623aed66 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -1867,7 +1867,7 @@ static void ufshcd_init_clk_gating(struct ufs_hba 
> *hba)
>  	snprintf(wq_name, ARRAY_SIZE(wq_name), "ufs_clk_gating_%d",
>  		 hba->host->host_no);
>  	hba->clk_gating.clk_gating_workq = alloc_ordered_workqueue(wq_name,
> -							   WQ_MEM_RECLAIM);
> +					WQ_MEM_RECLAIM | WQ_HIGHPRI);
> 
>  	hba->clk_gating.is_enabled = true;