Re: [RFC PATCH 11/29] memblock: replace alloc_bootmem_pages_nopanic with memblock_alloc_nopanic

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On Wed 05-09-18 18:59:26, Mike Rapoport wrote:
> The alloc_bootmem_pages_nopanic(size) is a shortcut for
> __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) and can be
> replaced by memblock_alloc_nopanic(size, PAGE_SIZE)

It is not so straightforward because you really have to go deep down the
callpath to see they are doing the same thing essentially.

> Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>

Acked-by: Michal Hocko <mhocko@xxxxxxxx>

> ---
>  drivers/usb/early/xhci-dbc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
> index e15e896..16df968 100644
> --- a/drivers/usb/early/xhci-dbc.c
> +++ b/drivers/usb/early/xhci-dbc.c
> @@ -94,7 +94,7 @@ static void * __init xdbc_get_page(dma_addr_t *dma_addr)
>  {
>  	void *virt;
>  
> -	virt = alloc_bootmem_pages_nopanic(PAGE_SIZE);
> +	virt = memblock_alloc_nopanic(PAGE_SIZE, PAGE_SIZE);
>  	if (!virt)
>  		return NULL;
>  
> -- 
> 2.7.4
> 

-- 
Michal Hocko
SUSE Labs




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