netdev - Re: [PATCH net-next v2 1/2] docs: net: page_pool: document PP_FLAG_DMA_SYNC

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Date: Thu, 3 Aug 2023 09:04:38 +0200
From: Jesper Dangaard Brouer <hawk@...nel.org>
To: Jakub Kicinski <kuba@...nel.org>, davem@...emloft.net
Cc: netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
 aleksander.lobakin@...el.com, ilias.apalodimas@...aro.org, corbet@....net,
 linux-doc@...r.kernel.org, Michael Chan <michael.chan@...adcom.com>,
 Lorenzo Bianconi <lorenzo@...nel.org>, Randy Dunlap <rdunlap@...radead.org>
Subject: Re: [PATCH net-next v2 1/2] docs: net: page_pool: document
 PP_FLAG_DMA_SYNC_DEV parameters



On 02/08/2023 18.18, Jakub Kicinski wrote:
> Using PP_FLAG_DMA_SYNC_DEV is a bit confusing. It was perhaps
> more obvious when it was introduced but the page pool use
> has grown beyond XDP and beyond packet-per-page so now
> making the heads and tails out of this feature is not
> trivial.
> 
> Obviously making the API more user friendly would be
> a better fix, but until someone steps up to do that
> let's at least document what the parameters are.
> 
> Relevant discussion in the first Link.
> 
> Link: https://lore.kernel.org/all/20230731114427.0da1f73b@kernel.org/
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---

Thanks for updating the documentation much appreciated.

Acked-by: Jesper Dangaard Brouer <hawk@...nel.org>