backing: silence compiler warning using __printf

__printf marker was added in commit d2cc4dd ("bdi_register: add __printf verification, fix arg mismatch") for function `bdi_register` since it is useful to verify format and arguments. Apply equivalent gcc attribute to `bdi_register_va`. Remove warning triggered with W=1: mm/backing-dev.c:881:2: warning: function might be possible candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] Reviewed-by: Jan Kara <[email protected]> Signed-off-by: Mathieu Malaterre <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
pelwell · Apr 10, 2018 · a93f00b · a93f00b
1 parent 37c7c6c
commit a93f00b
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
@@ -28,6 +28,7 @@ void bdi_put(struct backing_dev_info *bdi);
 
 __printf(2, 3)
 int bdi_register(struct backing_dev_info *bdi, const char *fmt, ...);
+__printf(2, 0)
 int bdi_register_va(struct backing_dev_info *bdi, const char *fmt,
 		    va_list args);
 int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner);