linux-kernel - Re: [PATCH] delete unnecessary bootmem struct page array

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Date:	Sun, 01 Jun 2014 09:54:20 +0200
From:	Richard Weinberger <richard@....at>
To:	Real Name <enjoymindful@...il.com>,
	user-mode-linux-devel@...ts.sourceforge.net
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] delete unnecessary bootmem struct page array

Hi!

Am 01.06.2014 02:24, schrieb Real Name:
> 1) uml kernel bootmem managed through bootmem_data->node_bootmem_map,
> not struct page array, so it is unnecessary.
> 
> 2) the struct page array allocate has been pointer by a *loacl* pointer
> struct page *map in init_maps function. The array can't be access after
> the init_maps exit. As a result, there is about 1% of total memory leak.

Please add a Signed-off-by tag using your real name.

Thanks,
//richard

> ---
>  arch/um/kernel/um_arch.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
> index 016adf0..d4c98d1 100644
> --- a/arch/um/kernel/um_arch.c
> +++ b/arch/um/kernel/um_arch.c
> @@ -348,12 +348,6 @@ int __init linux_main(int argc, char **argv)
>  	start_vm = VMALLOC_START;
>  
>  	setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
> -	if (init_maps(physmem_size, iomem_size, highmem)) {
> -		printf("Failed to allocate mem_map for %Lu bytes of physical "
> -		       "memory and %Lu bytes of highmem\n", physmem_size,
> -		       highmem);
> -		exit(1);
> -	}
>  
>  	virtmem_size = physmem_size;
>  	stack = (unsigned long) argv;
> 
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