linux-kernel - Re: [PATCH] mm/cma: Drop cma_get

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Message-Id: <20240206142550.62bed7715692ddc0071da7d0@linux-foundation.org>
Date: Tue, 6 Feb 2024 14:25:50 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-mm@...ck.org, Sumit Semwal <sumit.semwal@...aro.org>,
 dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/cma: Drop cma_get_name()

On Tue,  6 Feb 2024 09:45:18 +0530 Anshuman Khandual <anshuman.khandual@....com> wrote:

> cma_get_name() just returns cma->name without any additional transformation
> unlike other helpers such as cma_get_base() and cma_get_size(). This helper
> is not worth the additional indirection, and can be dropped after replacing
> directly with cma->name in the sole caller __add_cma_heap().

drivers/dma-buf/heaps/cma_heap.c: In function '__add_cma_heap':
drivers/dma-buf/heaps/cma_heap.c:379:28: error: invalid use of undefined type 'struct cma'
  379 |         exp_info.name = cma->name;
      |                            ^~

Fixing this would require moving the `struct cma' definition into
cma.h.  I don't think that's worthwhile.