From: Daniel Vetter <daniel.vetter@xxxxxxxx> Subject: mm/backing-dev.c: use might_alloc() Now that my little helper has landed, use it more. On top of the existing check this also uses lockdep through the fs_reclaim annotations. [akpm@xxxxxxxxxxxxxxxxxxxx: include linux/sched/mm.h] Link: https://lkml.kernel.org/r/20210113135009.3606813-2-daniel.vetter@xxxxxxxx Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/backing-dev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/backing-dev.c~bdi-use-might_alloc +++ a/mm/backing-dev.c @@ -8,6 +8,7 @@ #include <linux/fs.h> #include <linux/pagemap.h> #include <linux/mm.h> +#include <linux/sched/mm.h> #include <linux/sched.h> #include <linux/module.h> #include <linux/writeback.h> @@ -578,7 +579,7 @@ struct bdi_writeback *wb_get_create(stru { struct bdi_writeback *wb; - might_sleep_if(gfpflags_allow_blocking(gfp)); + might_alloc(gfp); if (!memcg_css->parent) return &bdi->wb; _
