Re: [PATCH v2] lib/iov_iter: fix to increase non slab folio refcount

[Sheng Yong <shengyong2021@gmail.com>]

On 4/1/25 23:22, Vlastimil Babka wrote:
> On 4/1/25 16:47, Sheng Yong wrote:
>> From: Sheng Yong <shengyong1@xiaomi.com>
[...]
>>
>> Fixes: b9c0e49abfca ("mm: decline to manipulate the refcount on a slab page")
> 
> Sigh. That went to v6.14
> 
> mm-hotfixes and Cc: stable then?

Hi, Vlastimil,

Shall I resend this patch with Cc: tag to the stable list?

thanks,
sheng

> 
>> Signed-off-by: Sheng Yong <shengyong1@xiaomi.com>
> 
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
> 
> Thanks.
> 
>> ---
>>   lib/iov_iter.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>> ---
>> v2:
>>    * update commit message
>>    * update coding style
>>
>> diff --git a/lib/iov_iter.c b/lib/iov_iter.c
>> index 8c7fdb7d8c8f..bc9391e55d57 100644
>> --- a/lib/iov_iter.c
>> +++ b/lib/iov_iter.c
>> @@ -1191,7 +1191,7 @@ static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
>>   			return -ENOMEM;
>>   		p = *pages;
>>   		for (int k = 0; k < n; k++) {
>> -			struct folio *folio = page_folio(page);
>> +			struct folio *folio = page_folio(page + k);
>>   			p[k] = page + k;
>>   			if (!folio_test_slab(folio))
>>   				folio_get(folio);
>