Re: [PATCH v3 12/14] treewide: replace PagePrivate() with page_private()

["David Hildenbrand (Arm)" <david@kernel.org>]

On 9/8/26 04:56, Zi Yan wrote:
> PG_private is going to be removed and its check is replaced by checking
> page->private != NULL.
> 

You should likely clarify here that, for these users (the pages they deal with),
PG_private is set if and only if page->private != NULL. Consequently, there is
no functional change.

> Replace page_buffers() with page_private() and delete page_buffers(),
> since only two users left and both can be converted to use page_private().
> 
[...]

> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> index 657c2cb0f8811..fad17df1d5082 100644
> --- a/fs/ceph/addr.c
> +++ b/fs/ceph/addr.c
> @@ -70,9 +70,7 @@ static int ceph_netfs_check_write_begin(struct file *file, loff_t pos, unsigned
>  
>  static inline struct ceph_snap_context *page_snap_context(struct page *page)
>  {
> -	if (PagePrivate(page))
> -		return (void *)page->private;
> -	return NULL;
> +	return (void *)page->private;
>  }

I'd even split this up into 2 (or even 3) patches:

1) Remove PagePrivate usage in ceph

2) Remove PagePrivate usage in md

3) Inline page_buffers() and remove it

Acked-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David