[PATCH] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[PATCH] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[chengming.zhou]

From: Chengming Zhou <zhouchengming@bytedance.com>

The SLAB_MEM_SPREAD flag is already a no-op as of 6.8-rc1, remove
its usage so we can delete it from slab. No functional change.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 76862ba40f35..0e5e4cb74c87 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -2521,21 +2521,19 @@ static const struct hc_driver isp1760_hc_driver = {
 int __init isp1760_init_kmem_once(void)
 {
 	urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem",
-			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY |
-			SLAB_MEM_SPREAD, NULL);
+			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY, NULL);
 
 	if (!urb_listitem_cachep)
 		return -ENOMEM;
 
 	qtd_cachep = kmem_cache_create("isp1760_qtd",
-			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY |
-			SLAB_MEM_SPREAD, NULL);
+			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY, NULL);
 
 	if (!qtd_cachep)
 		goto destroy_urb_listitem;
 
 	qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh),
-			0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL);
+			0, SLAB_TEMPORARY, NULL);
 
 	if (!qh_cachep)
 		goto destroy_qtd;
-- 
2.40.1

Re: [PATCH] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[Chengming Zhou]

On 2024/2/24 21:52, chengming.zhou@linux.dev wrote:
> From: Chengming Zhou <zhouchengming@bytedance.com>
> 
> The SLAB_MEM_SPREAD flag is already a no-op as of 6.8-rc1, remove
> its usage so we can delete it from slab. No functional change.

Update changelog to make it clearer:

The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was
removed as of v6.8-rc1, so it became a dead flag since the commit
16a1d968358a ("mm/slab: remove mm/slab.c and slab_def.h"). And the
series[1] went on to mark it obsolete to avoid confusion for users.
Here we can just remove all its users, which has no functional change.

[1] https://lore.kernel.org/all/20240223-slab-cleanup-flags-v2-1-02f1753e8303@suse.cz/

Thanks!

> 
> Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
> ---
>  drivers/usb/isp1760/isp1760-hcd.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
> index 76862ba40f35..0e5e4cb74c87 100644
> --- a/drivers/usb/isp1760/isp1760-hcd.c
> +++ b/drivers/usb/isp1760/isp1760-hcd.c
> @@ -2521,21 +2521,19 @@ static const struct hc_driver isp1760_hc_driver = {
>  int __init isp1760_init_kmem_once(void)
>  {
>  	urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem",
> -			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY |
> -			SLAB_MEM_SPREAD, NULL);
> +			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY, NULL);
>  
>  	if (!urb_listitem_cachep)
>  		return -ENOMEM;
>  
>  	qtd_cachep = kmem_cache_create("isp1760_qtd",
> -			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY |
> -			SLAB_MEM_SPREAD, NULL);
> +			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY, NULL);
>  
>  	if (!qtd_cachep)
>  		goto destroy_urb_listitem;
>  
>  	qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh),
> -			0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL);
> +			0, SLAB_TEMPORARY, NULL);
>  
>  	if (!qh_cachep)
>  		goto destroy_qtd;

Re: [PATCH] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[Rui Miguel Silva]

Hey Zhou,
many thanks for the patch.

Chengming Zhou <chengming.zhou@linux.dev> writes:

> On 2024/2/24 21:52, chengming.zhou@linux.dev wrote:
>> From: Chengming Zhou <zhouchengming@bytedance.com>
>> 
>> The SLAB_MEM_SPREAD flag is already a no-op as of 6.8-rc1, remove
>> its usage so we can delete it from slab. No functional change.
>
> Update changelog to make it clearer:
>
> The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was
> removed as of v6.8-rc1, so it became a dead flag since the commit
> 16a1d968358a ("mm/slab: remove mm/slab.c and slab_def.h"). And the
> series[1] went on to mark it obsolete to avoid confusion for users.
> Here we can just remove all its users, which has no functional change.
>
> [1] https://lore.kernel.org/all/20240223-slab-cleanup-flags-v2-1-02f1753e8303@suse.cz/

With this changelog, you can add my tag:
Acked-by: Rui Miguel Silva <rui.silva@linaro.org>

Cheers,
    Rui
>
> Thanks!
>
>> 
>> Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
>> ---
>>  drivers/usb/isp1760/isp1760-hcd.c | 8 +++-----
>>  1 file changed, 3 insertions(+), 5 deletions(-)
>> 
>> diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
>> index 76862ba40f35..0e5e4cb74c87 100644
>> --- a/drivers/usb/isp1760/isp1760-hcd.c
>> +++ b/drivers/usb/isp1760/isp1760-hcd.c
>> @@ -2521,21 +2521,19 @@ static const struct hc_driver isp1760_hc_driver = {
>>  int __init isp1760_init_kmem_once(void)
>>  {
>>  	urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem",
>> -			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY |
>> -			SLAB_MEM_SPREAD, NULL);
>> +			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY, NULL);
>>  
>>  	if (!urb_listitem_cachep)
>>  		return -ENOMEM;
>>  
>>  	qtd_cachep = kmem_cache_create("isp1760_qtd",
>> -			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY |
>> -			SLAB_MEM_SPREAD, NULL);
>> +			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY, NULL);
>>  
>>  	if (!qtd_cachep)
>>  		goto destroy_urb_listitem;
>>  
>>  	qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh),
>> -			0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL);
>> +			0, SLAB_TEMPORARY, NULL);
>>  
>>  	if (!qh_cachep)
>>  		goto destroy_qtd;

Re: [PATCH] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[Greg KH]

On Mon, Feb 26, 2024 at 11:02:24AM +0800, Chengming Zhou wrote:
> On 2024/2/24 21:52, chengming.zhou@linux.dev wrote:
> > From: Chengming Zhou <zhouchengming@bytedance.com>
> > 
> > The SLAB_MEM_SPREAD flag is already a no-op as of 6.8-rc1, remove
> > its usage so we can delete it from slab. No functional change.
> 
> Update changelog to make it clearer:
> 
> The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was
> removed as of v6.8-rc1, so it became a dead flag since the commit
> 16a1d968358a ("mm/slab: remove mm/slab.c and slab_def.h"). And the
> series[1] went on to mark it obsolete to avoid confusion for users.
> Here we can just remove all its users, which has no functional change.

Please submit a version 2 with this updated changelog.

thanks,

greg k-h

[PATCH v2] usb: isp1760: remove SLAB_MEM_SPREAD flag usage

[Chengming Zhou]

From: Chengming Zhou <zhouchengming@bytedance.com>

The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was
removed as of v6.8-rc1, so it became a dead flag since the commit
16a1d968358a ("mm/slab: remove mm/slab.c and slab_def.h"). And the
series[1] went on to mark it obsolete explicitly to avoid confusion
for users. Here we can just remove all its users, which has no any
functional change.

[1] https://lore.kernel.org/all/20240223-slab-cleanup-flags-v2-1-02f1753e8303@suse.cz/

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 76862ba40f35..0e5e4cb74c87 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -2521,21 +2521,19 @@ static const struct hc_driver isp1760_hc_driver = {
 int __init isp1760_init_kmem_once(void)
 {
 	urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem",
-			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY |
-			SLAB_MEM_SPREAD, NULL);
+			sizeof(struct urb_listitem), 0, SLAB_TEMPORARY, NULL);
 
 	if (!urb_listitem_cachep)
 		return -ENOMEM;
 
 	qtd_cachep = kmem_cache_create("isp1760_qtd",
-			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY |
-			SLAB_MEM_SPREAD, NULL);
+			sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY, NULL);
 
 	if (!qtd_cachep)
 		goto destroy_urb_listitem;
 
 	qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh),
-			0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL);
+			0, SLAB_TEMPORARY, NULL);
 
 	if (!qh_cachep)
 		goto destroy_qtd;
-- 
2.40.1