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SubjectRe: [PATCH v2 1/2] mmap: remove inline of vm_unmapped_area
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On 3/13/20 2:14 AM, Jaewon Kim wrote:
> In prepration for next patch remove inline of vm_unmapped_area and move
> code to mmap.c. There is no logical change.
>
> Also remove unmapped_area[_topdown] out of mm.h, there is no code
> calling to them.
>
> Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>

Assuming the 'static' is added as Andrew pointed out,

Reviewed-by: Vlastimil Babka <vbabka@suse.cz>


> ---
> include/linux/mm.h | 21 +--------------------
> mm/mmap.c | 16 ++++++++++++++++
> 2 files changed, 17 insertions(+), 20 deletions(-)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 52269e56c514..1cb01f4a83c9 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -2364,26 +2364,7 @@ struct vm_unmapped_area_info {
> unsigned long align_offset;
> };
>
> -extern unsigned long unmapped_area(struct vm_unmapped_area_info *info);
> -extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
> -
> -/*
> - * Search for an unmapped address range.
> - *
> - * We are looking for a range that:
> - * - does not intersect with any VMA;
> - * - is contained within the [low_limit, high_limit) interval;
> - * - is at least the desired size.
> - * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
> - */
> -static inline unsigned long
> -vm_unmapped_area(struct vm_unmapped_area_info *info)
> -{
> - if (info->flags & VM_UNMAPPED_AREA_TOPDOWN)
> - return unmapped_area_topdown(info);
> - else
> - return unmapped_area(info);
> -}
> +extern unsigned long vm_unmapped_area(struct vm_unmapped_area_info *info);
>
> /* truncate.c */
> extern void truncate_inode_pages(struct address_space *, loff_t);
> diff --git a/mm/mmap.c b/mm/mmap.c
> index d681a20eb4ea..eeaddb76286c 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -2050,6 +2050,22 @@ unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info)
> return gap_end;
> }
>
> +/*
> + * Search for an unmapped address range.
> + *
> + * We are looking for a range that:
> + * - does not intersect with any VMA;
> + * - is contained within the [low_limit, high_limit) interval;
> + * - is at least the desired size.
> + * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
> + */
> +unsigned long vm_unmapped_area(struct vm_unmapped_area_info *info)
> +{
> + if (info->flags & VM_UNMAPPED_AREA_TOPDOWN)
> + return unmapped_area_topdown(info);
> + else
> + return unmapped_area(info);
> +}
>
> #ifndef arch_get_mmap_end
> #define arch_get_mmap_end(addr) (TASK_SIZE)
>

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