Clang complains when a variable is declared extern twice, but with two different sections. num_poisoned_pages is marked extern and __read_mostly in include/linux/swapops.h, but only extern in include/linux/mm.h. Some c source files must include both, and thus see the conflicting declarations.
Signed-off-by: Nick Desaulniers <nick.desaulni...@gmail.com> --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index ad06d42adb1a..bd4bd59f02c1 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2582,7 +2582,7 @@ extern int get_hwpoison_page(struct page *page); extern int sysctl_memory_failure_early_kill; extern int sysctl_memory_failure_recovery; extern void shake_page(struct page *p, int access); -extern atomic_long_t num_poisoned_pages; +extern atomic_long_t num_poisoned_pages __read_mostly; extern int soft_offline_page(struct page *page, int flags); -- 2.14.1
