linux-kernel - Re: [PATCH v6 2/7] dma: avoid redundant calls for sync operations

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Message-ID: <20240509120220.GB11327@lst.de>
Date: Thu, 9 May 2024 14:02:20 +0200
From: Christoph Hellwig <hch@....de>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Christoph Hellwig <hch@....de>, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Magnus Karlsson <magnus.karlsson@...el.com>,
	nex.sw.ncis.osdt.itp.upstreaming@...el.com, bpf@...r.kernel.org,
	netdev@...r.kernel.org, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/7] dma: avoid redundant calls for sync operations

On Thu, May 09, 2024 at 01:59:41PM +0200, Alexander Lobakin wrote:
> Or invert the flag, so that false would mean "it needs sync" and it
> would be the default if dma_*mask*() wasn't called.

That is probably the safest option.