Re: [PATCH 2/2] uprobe: collapse THP pmd after removing all uprobes

[Oleg Nesterov <oleg@xxxxxxxxxx>]

On 07/28, Song Liu wrote:
>
> @@ -525,6 +527,9 @@ int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm,
>  
>  				/* dec_mm_counter for old_page */
>  				dec_mm_counter(mm, MM_ANONPAGES);
> +
> +				if (PageCompound(orig_page))
> +					orig_page_huge = true;

I am wondering how find_get_page() can return a PageCompound() page...

IIUC, this is only possible if shmem_file(), right?

Oleg.