Re: [willy-pagecache:for-next 58/85] mm/folio-compat.c:181:9: error: implicit declaration of function 'folio_mlock'; did you mean 'folio_lock'?

[Matthew Wilcox <willy@infradead.org>]

On Tue, Feb 15, 2022 at 01:19:26AM +0800, kernel test robot wrote:
> commit: 2cefeaf011db4a95ecb515cc2ca61d091a792ac1 [58/85] mm/rmap: Turn page_mlock() into folio_mlock()
> 
>    mm/folio-compat.c:169:6: warning: no previous prototype for 'clear_page_mlock' [-Wmissing-prototypes]
>      169 | void clear_page_mlock(struct page *page)
>          |      ^~~~~~~~~~~~~~~~
>    mm/folio-compat.c:174:6: error: redefinition of 'mlock_vma_page'
>      174 | void mlock_vma_page(struct page *page)
>          |      ^~~~~~~~~~~~~~
>    In file included from mm/folio-compat.c:11:
>    mm/internal.h:503:20: note: previous definition of 'mlock_vma_page' with type 'void(struct page *)'
>      503 | static inline void mlock_vma_page(struct page *page) { }
>          |                    ^~~~~~~~~~~~~~
>    mm/folio-compat.c: In function 'mlock_vma_page':
>    mm/folio-compat.c:176:9: error: implicit declaration of function 'mlock_vma_folio'; did you mean 'mlock_vma_page'? [-Werror=implicit-function-declaration]
>      176 |         mlock_vma_folio(page_folio(page));
>          |         ^~~~~~~~~~~~~~~
>          |         mlock_vma_page
>    mm/folio-compat.c: At top level:
>    mm/folio-compat.c:179:6: warning: no previous prototype for 'page_mlock' [-Wmissing-prototypes]
>      179 | void page_mlock(struct page *page)
>          |      ^~~~~~~~~~
>    mm/folio-compat.c: In function 'page_mlock':
> >> mm/folio-compat.c:181:9: error: implicit declaration of function 'folio_mlock'; did you mean 'folio_lock'? [-Werror=implicit-function-declaration]
>      181 |         folio_mlock(page_folio(page));
>          |         ^~~~~~~~~~~
>          |         folio_lock
>    cc1: some warnings being treated as errors

All fixed in an update I pushed about two hours ago ;-)