linux-kernel - Re: [PATCH] dma-buf: Remove unnecessary kmalloc() cast

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Message-ID: <20240702064017.GA24838@lst.de>
Date: Tue, 2 Jul 2024 08:40:17 +0200
From: Christoph Hellwig <hch@....de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thorsten Blum <thorsten.blum@...lux.com>, jack@...e.cz,
	surenb@...gle.com, linux-kernel@...r.kernel.org,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Christian König <christian.koenig@....com>,
	linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH] dma-buf: Remove unnecessary kmalloc() cast

On Mon, Jul 01, 2024 at 11:26:34PM -0700, Andrew Morton wrote:
> No, I do think the cast is useful:
> 
> 	struct page *page = dma_fence_chain_alloc();
> 
> will presently generate a warning.  We want this.  Your change will
> remove that useful warning.
> 
> 
> Unrelatedly: there is no earthly reason why this is implemented as a
> macro.  A static inline function would be so much better.  Why do we
> keep doing this.

Agreed with all of the above.  Adding the dmabuf maintainers.