* [PATCH v2 1/4] scsi: ufs: introduce ufs_hba_variant_params to collect customizable parameters
2020-05-09 9:37 [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy Stanley Chu
@ 2020-05-09 9:37 ` Stanley Chu
2020-05-09 9:37 ` [PATCH v2 2/4] scsi: ufs-mediatek: change the way to use " Stanley Chu
` (3 subsequent siblings)
4 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-09 9:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb,
asutoshd
Cc: bvanassche, andy.teng, chun-hung.wu, kuohong.wang, linux-kernel,
cang, linux-mediatek, peter.wang, matthias.bgg, Stanley Chu,
linux-arm-kernel, beanhuo
There are more and more customizable parameters showed up
in UFS driver. Let's collect them into a unified place to make
the driver more clean.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.c | 38 +++++++++++++++-----------------------
drivers/scsi/ufs/ufshcd.h | 8 +++++++-
2 files changed, 22 insertions(+), 24 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 426073a518ef..cdacbe6378a1 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1353,23 +1353,6 @@ static int ufshcd_devfreq_get_dev_status(struct device *dev,
return 0;
}
-static struct devfreq_dev_profile ufs_devfreq_profile = {
- .polling_ms = 100,
- .target = ufshcd_devfreq_target,
- .get_dev_status = ufshcd_devfreq_get_dev_status,
-};
-
-#if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND)
-static struct devfreq_simple_ondemand_data ufs_ondemand_data = {
- .upthreshold = 70,
- .downdifferential = 5,
-};
-
-static void *gov_data = &ufs_ondemand_data;
-#else
-static void *gov_data; /* NULL */
-#endif
-
static int ufshcd_devfreq_init(struct ufs_hba *hba)
{
struct list_head *clk_list = &hba->clk_list_head;
@@ -1385,12 +1368,12 @@ static int ufshcd_devfreq_init(struct ufs_hba *hba)
dev_pm_opp_add(hba->dev, clki->min_freq, 0);
dev_pm_opp_add(hba->dev, clki->max_freq, 0);
- ufshcd_vops_config_scaling_param(hba, &ufs_devfreq_profile,
- gov_data);
+ ufshcd_vops_config_scaling_param(hba, &hba->vps->devfreq_profile,
+ &hba->vps->ondemand_data);
devfreq = devfreq_add_device(hba->dev,
- &ufs_devfreq_profile,
+ &hba->vps->devfreq_profile,
DEVFREQ_GOV_SIMPLE_ONDEMAND,
- gov_data);
+ &hba->vps->ondemand_data);
if (IS_ERR(devfreq)) {
ret = PTR_ERR(devfreq);
dev_err(hba->dev, "Unable to register with devfreq %d\n", ret);
@@ -4314,7 +4297,7 @@ int ufshcd_hba_enable(struct ufs_hba *hba)
* instruction might be read back.
* This delay can be changed based on the controller.
*/
- ufshcd_delay_us(hba->hba_enable_delay_us, 100);
+ ufshcd_delay_us(hba->vps->hba_enable_delay_us, 100);
/* wait for the host controller to complete initialization */
retry = 50;
@@ -7477,6 +7460,15 @@ static const struct attribute_group *ufshcd_driver_groups[] = {
NULL,
};
+static struct ufs_hba_variant_params ufs_hba_vps = {
+ .hba_enable_delay_us = 1000,
+ .devfreq_profile.polling_ms = 100,
+ .devfreq_profile.target = ufshcd_devfreq_target,
+ .devfreq_profile.get_dev_status = ufshcd_devfreq_get_dev_status,
+ .ondemand_data.upthreshold = 70,
+ .ondemand_data.downdifferential = 5,
+};
+
static struct scsi_host_template ufshcd_driver_template = {
.module = THIS_MODULE,
.name = UFSHCD,
@@ -8724,7 +8716,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
hba->mmio_base = mmio_base;
hba->irq = irq;
- hba->hba_enable_delay_us = 1000;
+ hba->vps = &ufs_hba_vps;
err = ufshcd_hba_init(hba);
if (err)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 23a434c03c2a..f7bdf52ba8b0 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -566,6 +566,12 @@ enum ufshcd_caps {
UFSHCD_CAP_WB_EN = 1 << 7,
};
+struct ufs_hba_variant_params {
+ struct devfreq_dev_profile devfreq_profile;
+ struct devfreq_simple_ondemand_data ondemand_data;
+ u16 hba_enable_delay_us;
+};
+
/**
* struct ufs_hba - per adapter private structure
* @mmio_base: UFSHCI base register address
@@ -663,6 +669,7 @@ struct ufs_hba {
int nutmrs;
u32 ufs_version;
const struct ufs_hba_variant_ops *vops;
+ struct ufs_hba_variant_params *vps;
void *priv;
unsigned int irq;
bool is_irq_enabled;
@@ -684,7 +691,6 @@ struct ufs_hba {
u32 eh_flags;
u32 intr_mask;
u16 ee_ctrl_mask;
- u16 hba_enable_delay_us;
bool is_powered;
/* Work Queues */
--
2.18.0
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^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 2/4] scsi: ufs-mediatek: change the way to use customizable parameters
2020-05-09 9:37 [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy Stanley Chu
2020-05-09 9:37 ` [PATCH v2 1/4] scsi: ufs: introduce ufs_hba_variant_params to collect customizable parameters Stanley Chu
@ 2020-05-09 9:37 ` Stanley Chu
2020-05-09 9:37 ` [PATCH v2 3/4] scsi: ufs: customize flush threshold for WriteBooster Stanley Chu
` (2 subsequent siblings)
4 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-09 9:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb,
asutoshd
Cc: bvanassche, andy.teng, chun-hung.wu, kuohong.wang, linux-kernel,
cang, linux-mediatek, peter.wang, matthias.bgg, Stanley Chu,
linux-arm-kernel, beanhuo
Now all customizable parameters have been moved to hba->vps,
thus modify the way to use them.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index c543142554d3..56620f7d88ce 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -79,9 +79,9 @@ static int ufs_mtk_hce_enable_notify(struct ufs_hba *hba,
if (status == PRE_CHANGE) {
if (host->unipro_lpm)
- hba->hba_enable_delay_us = 0;
+ hba->vps->hba_enable_delay_us = 0;
else
- hba->hba_enable_delay_us = 600;
+ hba->vps->hba_enable_delay_us = 600;
}
return 0;
--
2.18.0
_______________________________________________
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^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 3/4] scsi: ufs: customize flush threshold for WriteBooster
2020-05-09 9:37 [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy Stanley Chu
2020-05-09 9:37 ` [PATCH v2 1/4] scsi: ufs: introduce ufs_hba_variant_params to collect customizable parameters Stanley Chu
2020-05-09 9:37 ` [PATCH v2 2/4] scsi: ufs-mediatek: change the way to use " Stanley Chu
@ 2020-05-09 9:37 ` Stanley Chu
2020-05-09 9:37 ` [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy Stanley Chu
2020-05-15 1:10 ` [PATCH v2 0/4] scsi: ufs: allow customizable " Martin K. Petersen
4 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-09 9:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb,
asutoshd
Cc: bvanassche, andy.teng, chun-hung.wu, kuohong.wang, linux-kernel,
cang, linux-mediatek, peter.wang, matthias.bgg, Stanley Chu,
linux-arm-kernel, beanhuo
Allow flush threshold for WriteBooster to be customizable by
vendors. To achieve this, make the value as a variable in struct
ufs_hba_variant_params.
Besides, use macro UFS_WB_BUF_REMAIN_PERCENT() instead to provide
more flexible usage of WriteBooster available buffer values.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs.h | 5 +----
drivers/scsi/ufs/ufshcd.c | 7 ++++---
drivers/scsi/ufs/ufshcd.h | 1 +
3 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index b3135344ab3f..fadba3a3bbcd 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -478,10 +478,7 @@ enum ufs_dev_pwr_mode {
UFS_POWERDOWN_PWR_MODE = 3,
};
-enum ufs_dev_wb_buf_avail_size {
- UFS_WB_10_PERCENT_BUF_REMAIN = 0x1,
- UFS_WB_40_PERCENT_BUF_REMAIN = 0x4,
-};
+#define UFS_WB_BUF_REMAIN_PERCENT(val) ((val) / 10)
/**
* struct utp_cmd_rsp - Response UPIU structure
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index cdacbe6378a1..aca50ed39844 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5301,8 +5301,8 @@ static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,
cur_buf);
return false;
}
- /* Let it continue to flush when >60% full */
- if (avail_buf < UFS_WB_40_PERCENT_BUF_REMAIN)
+ /* Let it continue to flush when available buffer exceeds threshold */
+ if (avail_buf < hba->vps->wb_flush_threshold)
return true;
return false;
@@ -5336,7 +5336,7 @@ static bool ufshcd_wb_keep_vcc_on(struct ufs_hba *hba)
}
if (!hba->dev_info.b_presrv_uspc_en) {
- if (avail_buf <= UFS_WB_10_PERCENT_BUF_REMAIN)
+ if (avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10))
return true;
return false;
}
@@ -7462,6 +7462,7 @@ static const struct attribute_group *ufshcd_driver_groups[] = {
static struct ufs_hba_variant_params ufs_hba_vps = {
.hba_enable_delay_us = 1000,
+ .wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(40),
.devfreq_profile.polling_ms = 100,
.devfreq_profile.target = ufshcd_devfreq_target,
.devfreq_profile.get_dev_status = ufshcd_devfreq_get_dev_status,
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index f7bdf52ba8b0..e3dfb48e669e 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -570,6 +570,7 @@ struct ufs_hba_variant_params {
struct devfreq_dev_profile devfreq_profile;
struct devfreq_simple_ondemand_data ondemand_data;
u16 hba_enable_delay_us;
+ u32 wb_flush_threshold;
};
/**
--
2.18.0
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^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy
2020-05-09 9:37 [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy Stanley Chu
` (2 preceding siblings ...)
2020-05-09 9:37 ` [PATCH v2 3/4] scsi: ufs: customize flush threshold for WriteBooster Stanley Chu
@ 2020-05-09 9:37 ` Stanley Chu
2020-05-12 2:19 ` Asutosh Das (asd)
2020-05-15 1:10 ` [PATCH v2 0/4] scsi: ufs: allow customizable " Martin K. Petersen
4 siblings, 1 reply; 10+ messages in thread
From: Stanley Chu @ 2020-05-09 9:37 UTC (permalink / raw)
To: linux-scsi, martin.petersen, avri.altman, alim.akhtar, jejb,
asutoshd
Cc: bvanassche, andy.teng, chun-hung.wu, kuohong.wang, linux-kernel,
cang, linux-mediatek, peter.wang, matthias.bgg, Stanley Chu,
linux-arm-kernel, beanhuo
Change the WriteBooster policy to keep VCC on during
runtime suspend if available WriteBooster buffer is less
than 80%.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufs-mediatek.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 56620f7d88ce..94e97701f456 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -271,6 +271,7 @@ static int ufs_mtk_init(struct ufs_hba *hba)
/* Enable WriteBooster */
hba->caps |= UFSHCD_CAP_WB_EN;
+ hba->vps->wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(80);
/*
* ufshcd_vops_init() is invoked after
--
2.18.0
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^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy
2020-05-09 9:37 ` [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy Stanley Chu
@ 2020-05-12 2:19 ` Asutosh Das (asd)
2020-05-12 16:21 ` Martin K. Petersen
0 siblings, 1 reply; 10+ messages in thread
From: Asutosh Das (asd) @ 2020-05-12 2:19 UTC (permalink / raw)
To: Stanley Chu, linux-scsi, martin.petersen, avri.altman,
alim.akhtar, jejb
Cc: bvanassche, andy.teng, chun-hung.wu, kuohong.wang, linux-kernel,
cang, linux-mediatek, peter.wang, matthias.bgg, linux-arm-kernel,
beanhuo
On 5/9/2020 2:37 AM, Stanley Chu wrote:
> Change the WriteBooster policy to keep VCC on during
> runtime suspend if available WriteBooster buffer is less
> than 80%.
>
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
> ---
> drivers/scsi/ufs/ufs-mediatek.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
> index 56620f7d88ce..94e97701f456 100644
> --- a/drivers/scsi/ufs/ufs-mediatek.c
> +++ b/drivers/scsi/ufs/ufs-mediatek.c
> @@ -271,6 +271,7 @@ static int ufs_mtk_init(struct ufs_hba *hba)
>
> /* Enable WriteBooster */
> hba->caps |= UFSHCD_CAP_WB_EN;
> + hba->vps->wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(80);
>
> /*
> * ufshcd_vops_init() is invoked after
>
Patchset looks good to me.
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
Linux Foundation Collaborative Project
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy
2020-05-12 2:19 ` Asutosh Das (asd)
@ 2020-05-12 16:21 ` Martin K. Petersen
2020-05-12 18:10 ` Asutosh Das (asd)
0 siblings, 1 reply; 10+ messages in thread
From: Martin K. Petersen @ 2020-05-12 16:21 UTC (permalink / raw)
To: Asutosh Das (asd)
Cc: linux-scsi, martin.petersen, andy.teng, jejb, chun-hung.wu,
kuohong.wang, linux-kernel, avri.altman, cang, linux-mediatek,
peter.wang, alim.akhtar, matthias.bgg, Stanley Chu, bvanassche,
linux-arm-kernel, beanhuo
Hi Asutosh!
> Patchset looks good to me.
>
> Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
When you want to approve an entire series, please respond to the cover
letter email. Otherwise the kernel.org tooling will only record the tag
for the individual patch you are responding to. In this case only patch
4 got tagged as reviewed in patchwork.
--
Martin K. Petersen Oracle Linux Engineering
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy
2020-05-12 16:21 ` Martin K. Petersen
@ 2020-05-12 18:10 ` Asutosh Das (asd)
0 siblings, 0 replies; 10+ messages in thread
From: Asutosh Das (asd) @ 2020-05-12 18:10 UTC (permalink / raw)
To: Martin K. Petersen
Cc: bvanassche, linux-scsi, andy.teng, jejb, chun-hung.wu,
kuohong.wang, linux-kernel, avri.altman, cang, linux-mediatek,
peter.wang, alim.akhtar, matthias.bgg, Stanley Chu,
linux-arm-kernel, beanhuo
On 5/12/2020 9:21 AM, Martin K. Petersen wrote:
>
> Hi Asutosh!
>
>> Patchset looks good to me.
>>
>> Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
>
> When you want to approve an entire series, please respond to the cover
> letter email. Otherwise the kernel.org tooling will only record the tag
> for the individual patch you are responding to. In this case only patch
> 4 got tagged as reviewed in patchwork.
>
Hi Martin
Sure - I'll keep this in mind.
Thanks,
Asutosh
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
Linux Foundation Collaborative Project
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy
2020-05-09 9:37 [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy Stanley Chu
` (3 preceding siblings ...)
2020-05-09 9:37 ` [PATCH v2 4/4] scsi: ufs-mediatek: customize WriteBooster flush policy Stanley Chu
@ 2020-05-15 1:10 ` Martin K. Petersen
2020-05-15 1:15 ` Stanley Chu
4 siblings, 1 reply; 10+ messages in thread
From: Martin K. Petersen @ 2020-05-15 1:10 UTC (permalink / raw)
To: jejb, linux-scsi, alim.akhtar, Stanley Chu, asutoshd, avri.altman
Cc: bvanassche, Martin K . Petersen, andy.teng, chun-hung.wu,
kuohong.wang, linux-kernel, cang, linux-mediatek, peter.wang,
matthias.bgg, linux-arm-kernel, beanhuo
On Sat, 9 May 2020 17:37:12 +0800, Stanley Chu wrote:
> This patch set tries to allow vendors to modify the WriteBooster flush policy.
>
> In the same time, collect all customizable parameters to an unified structure to make UFS driver more clean.
>
> v1 -> v2:
> - Squash patch [3] and [4]
> - Remove a dummy "new line" in patch [3]
> - Fix commit message in patch [3]
>
> [...]
Applied to 5.8/scsi-queue, thanks!
I had to combine patches 1 and 2. Otherwise you'd get compile
failures due to the fields moving inside the struct.
[1/4] scsi: ufs: Introduce ufs_hba_variant_params to group customizable parameters
https://git.kernel.org/mkp/scsi/c/90b8491c0033
[3/4] scsi: ufs: Customize flush threshold for WriteBooster
https://git.kernel.org/mkp/scsi/c/d14734ae3ae7
[4/4] scsi: ufs-mediatek: Customize WriteBooster flush policy
https://git.kernel.org/mkp/scsi/c/f48b285ae658
--
Martin K. Petersen Oracle Linux Engineering
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^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2 0/4] scsi: ufs: allow customizable WriteBooster flush policy
2020-05-15 1:10 ` [PATCH v2 0/4] scsi: ufs: allow customizable " Martin K. Petersen
@ 2020-05-15 1:15 ` Stanley Chu
0 siblings, 0 replies; 10+ messages in thread
From: Stanley Chu @ 2020-05-15 1:15 UTC (permalink / raw)
To: Martin K. Petersen
Cc: bvanassche, linux-scsi, andy.teng, jejb, chun-hung.wu,
kuohong.wang, linux-kernel, avri.altman, cang, linux-mediatek,
peter.wang, alim.akhtar, matthias.bgg, beanhuo, linux-arm-kernel,
asutoshd
Hi Martin,
On Thu, 2020-05-14 at 21:10 -0400, Martin K. Petersen wrote:
> On Sat, 9 May 2020 17:37:12 +0800, Stanley Chu wrote:
>
> > This patch set tries to allow vendors to modify the WriteBooster flush policy.
> >
> > In the same time, collect all customizable parameters to an unified structure to make UFS driver more clean.
> >
> > v1 -> v2:
> > - Squash patch [3] and [4]
> > - Remove a dummy "new line" in patch [3]
> > - Fix commit message in patch [3]
> >
> > [...]
>
> Applied to 5.8/scsi-queue, thanks!
>
> I had to combine patches 1 and 2. Otherwise you'd get compile
> failures due to the fields moving inside the struct.
>
> [1/4] scsi: ufs: Introduce ufs_hba_variant_params to group customizable parameters
> https://git.kernel.org/mkp/scsi/c/90b8491c0033
> [3/4] scsi: ufs: Customize flush threshold for WriteBooster
> https://git.kernel.org/mkp/scsi/c/d14734ae3ae7
> [4/4] scsi: ufs-mediatek: Customize WriteBooster flush policy
> https://git.kernel.org/mkp/scsi/c/f48b285ae658
>
Thanks so much for helping the patch squash.
Thanks,
Stanley Chu
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^ permalink raw reply [flat|nested] 10+ messages in thread