Re: [PATCH] mm/cma: Drop cma_get_name()

[Anshuman Khandual]

On 2/7/24 03:55, Andrew Morton wrote:
> On Tue,  6 Feb 2024 09:45:18 +0530 Anshuman Khandual <anshuman.khandual@xxxxxxx> 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.

Existing forward declaration e.g 'struct cma' inside include/linux/cma.h does
not seem to sufficient for cma->name to be de-referenced. Agreed - moving the
definition for 'struct cma' into include/linux/cma.h is not worthwhile. Hence
please drop this patch.