From: Guenter Roeck <linux@xxxxxxxxxxxx> Subject: mm/gup.c: mark undo_dev_pagemap as __maybe_unused Several mips builds generate the following build warning. mm/gup.c:1788:13: warning: 'undo_dev_pagemap' defined but not used The function is declared unconditionally but only called from behind various ifdefs. Mark it __maybe_unused. Link: http://lkml.kernel.org/r/1562072523-22311-1-git-send-email-linux@xxxxxxxxxxxx Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> Cc: Robin Murphy <robin.murphy@xxxxxxx> Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/gup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/gup.c~mm-mark-undo_dev_pagemap-as-__maybe_unused +++ a/mm/gup.c @@ -1796,7 +1796,8 @@ static inline pte_t gup_get_pte(pte_t *p } #endif /* CONFIG_GUP_GET_PTE_LOW_HIGH */ -static void undo_dev_pagemap(int *nr, int nr_start, struct page **pages) +static void __maybe_unused undo_dev_pagemap(int *nr, int nr_start, + struct page **pages) { while ((*nr) - nr_start) { struct page *page = pages[--(*nr)]; _
