Re: [PATCH] fs/proc/page: Refactoring to reduce code duplication.

[David Hildenbrand]

On 17.03.25 09:01, Liu Ye wrote:
> From: Liu Ye <liuye@xxxxxxxxxx>
>
> The function kpageflags_read and kpagecgroup_read is quite similar
> to kpagecount_read. Consider refactoring common code into a helper
> function to reduce code duplication.
>
> Signed-off-by: Liu Ye <liuye@xxxxxxxxxx>
> ---
>   fs/proc/page.c | 158 ++++++++++++++++---------------------------------
>   1 file changed, 50 insertions(+), 108 deletions(-)
>
> diff --git a/fs/proc/page.c b/fs/proc/page.c
> index a55f5acefa97..f413016ebe67 100644
> --- a/fs/proc/page.c
> +++ b/fs/proc/page.c
> @@ -37,19 +37,17 @@ static inline unsigned long get_max_dump_pfn(void)
>   #endif
>   }
>   
> -/* /proc/kpagecount - an array exposing page mapcounts
> - *
> - * Each entry is a u64 representing the corresponding
> - * physical page mapcount.
> - */
> -static ssize_t kpagecount_read(struct file *file, char __user *buf,
> -			     size_t count, loff_t *ppos)
> +static ssize_t kpage_read(struct file *file, char __user *buf,
> +		size_t count, loff_t *ppos,
> +		u64 (*get_page_info)(struct page *))

Can we just indicate using an enum which operation to perform, so we can 
avoid having+passing these functions?

--
Cheers,

David / dhildenb