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SubjectRe: [PATCH v5 1/6] memblock: Factor out of top-down allocation
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On Wed, 2013-09-25 at 02:25 +0800, Zhang Yanfei wrote:
> From: Tang Chen <tangchen@cn.fujitsu.com>
>
> This patch creates a new function __memblock_find_range_rev
> to factor out of top-down allocation from memblock_find_in_range_node.
> This is a preparation because we will introduce a new bottom-up
> allocation mode in the following patch.
>
> Acked-by: Tejun Heo <tj@kernel.org>
> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
> Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>

Acked-by: Toshi Kani <toshi.kani@hp.com>

A minor comment below...

> ---
> mm/memblock.c | 47 ++++++++++++++++++++++++++++++++++-------------
> 1 files changed, 34 insertions(+), 13 deletions(-)
>
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 0ac412a..3d80c74 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -83,33 +83,25 @@ static long __init_memblock memblock_overlaps_region(struct memblock_type *type,
> }
>
> /**
> - * memblock_find_in_range_node - find free area in given range and node
> + * __memblock_find_range_rev - find free area utility, in reverse order
> * @start: start of candidate range
> * @end: end of candidate range, can be %MEMBLOCK_ALLOC_{ANYWHERE|ACCESSIBLE}
> * @size: size of free area to find
> * @align: alignment of free area to find
> * @nid: nid of the free area to find, %MAX_NUMNODES for any node
> *
> - * Find @size free area aligned to @align in the specified range and node.
> + * Utility called from memblock_find_in_range_node(), find free area top-down.
> *
> * RETURNS:
> * Found address on success, %0 on failure.
> */
> -phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start,
> - phys_addr_t end, phys_addr_t size,
> - phys_addr_t align, int nid)
> +static phys_addr_t __init_memblock
> +__memblock_find_range_rev(phys_addr_t start, phys_addr_t end,

Since we are now using the terms "top down" and "bottom up"
consistently, how about name this function as
__memblock_find_range_top_down()?

Thanks,
-Toshi



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