Re: [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch

[David Hildenbrand]

On 26.03.21 03:23, Wang Wensheng wrote:
> sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
> a WARN issue would be through the next time sparse_buffer_init() runs.
>
> Add the missing sparse_buffer_fini() in error branch.
>
> Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
> Signed-off-by: Wang Wensheng <wangwensheng4@xxxxxxxxxx>
> ---
>   mm/sparse.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/mm/sparse.c b/mm/sparse.c
> index 7bd23f9..33406ea 100644
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
>   			pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
>   			       __func__, nid);
>   			pnum_begin = pnum;
> +			sparse_buffer_fini();
>   			goto failed;
>   		}
>   		check_usemap_section_nr(nid, usage);

I am confused, why the resend, and why without RBs?

https://lkml.kernel.org/r/20210325113155.118574-1-wangwensheng4@xxxxxxxxxx

--
Thanks,

David / dhildenb