netdev - Re: [PATCH net-next] net: page_pool: Add page_pool_put_page_bulk() to page

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Date:   Mon, 23 Nov 2020 09:54:13 +0100
From:   Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
To:     Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     Lorenzo Bianconi <lorenzo@...nel.org>, netdev@...r.kernel.org,
        davem@...emloft.net, kuba@...nel.org, brouer@...hat.com
Subject: Re: [PATCH net-next] net: page_pool: Add page_pool_put_page_bulk()
 to page_pool.rst

> On Fri, Nov 20, 2020 at 11:19:34PM +0100, Lorenzo Bianconi wrote:
> > Introduce page_pool_put_page_bulk() entry into the API section of
> > page_pool.rst
> > 
> > Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> > ---
> >  Documentation/networking/page_pool.rst | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> > 
> > diff --git a/Documentation/networking/page_pool.rst b/Documentation/networking/page_pool.rst
> > index 43088ddf95e4..e848f5b995b8 100644
> > --- a/Documentation/networking/page_pool.rst
> > +++ b/Documentation/networking/page_pool.rst
> > @@ -97,6 +97,14 @@ a page will cause no race conditions is enough.
> >  
> >  * page_pool_get_dma_dir(): Retrieve the stored DMA direction.
> >  
> > +* page_pool_put_page_bulk(): It tries to refill a bulk of count pages into the
> 
> Tries to refill a number of pages sounds better?

ack, will fix it in v2

> 
> > +  ptr_ring cache holding ptr_ring producer lock. If the ptr_ring is full,
> > +  page_pool_put_page_bulk() will release leftover pages to the page allocator.
> > +  page_pool_put_page_bulk() is suitable to be run inside the driver NAPI tx
> > +  completion loop for the XDP_REDIRECT use case.
> > +  Please consider the caller must not use data area after running
> 
> s/consider/note/

ack, will fix it in v2

Regards,
Lorenzo

> 
> > +  page_pool_put_page_bulk(), as this function overwrites it.
> > +
> >  Coding examples
> >  ===============
> >  
> > -- 
> > 2.28.0
> > 
> 
> 
> Other than that 
> Acked-by: Ilias Apalodimas <ilias.apalodimas@...aro.org>
> 

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