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

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Message-ID: <CACKFLi=NZpy=aQH_qqG8Y0Y8BUPjmvTWbNuU5OE8i2ywUoF6FQ@mail.gmail.com>
Date: Wed, 2 Aug 2023 23:30:42 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com, 
	pabeni@...hat.com, aleksander.lobakin@...el.com, hawk@...nel.org, 
	ilias.apalodimas@...aro.org, corbet@....net, linux-doc@...r.kernel.org, 
	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 Wed, Aug 2, 2023 at 9:18 AM Jakub Kicinski <kuba@...nel.org> 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>

Reviewed-by: Michael Chan <michael.chan@...adcom.com>

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