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

[Sheng Yong]

On 4/1/25 23:22, Vlastimil Babka wrote:
> On 4/1/25 16:47, Sheng Yong wrote:
> > From: Sheng Yong <shengyong1@xxxxxxxxxx>
[...]
> > 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@xxxxxxxxxx>
>
> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
>
> 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);