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

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Message-Id: <20201024150646.1790529-4-jaegeuk@kernel.org>
Date:   Sat, 24 Oct 2020 08:06:44 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc:     cang@...eaurora.org, alim.akhtar@...sung.com, avri.altman@....com,
        bvanassche@....org, Jaegeuk Kim <jaegeuk@...gle.com>
Subject: [PATCH v3 3/5] scsi: ufs: use WQ_HIGHPRI for gating work

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>
---
 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;
 
-- 
2.29.0.rc1.297.gfa9743e501-goog