From: Eric Biggers <ebiggers@xxxxxxxxxx> sb_init_dio_done_wq() is defined in fs/direct-io.c and declared in fs/internal.h, but the declaration isn't included at the point of the definition. Include the header to enforce that the definition matches the declaration. This addresses a gcc warning when -Wmissing-prototypes is enabled. Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> --- fs/direct-io.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/direct-io.c b/fs/direct-io.c index 722d17c88edb9..6dea55991e530 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -37,6 +37,7 @@ #include <linux/uio.h> #include <linux/atomic.h> #include <linux/prefetch.h> +#include "internal.h" /* * How many user pages to map in one call to get_user_pages(). This determines -- 2.19.1.930.g4563a0d9d0-goog