writeback: Separate out wb_get_lookup() from wb_get_create()

Separate out wb_get_lookup() which doesn't try to create one if there isn't already one from wb_get_create(). This will be used by later patches.

Tejun Heo committed 7 years ago

Commit ed288dc1 parent 34f8fe52 files · +39 −18Browse files

Showing the changes to include/linux (1 of 2 files). Show all

Unified · Split

@@ -230,6 +230,8 @@ static inline int bdi_sched_wait(void *word) · 229 unmodified lines
230	230	struct bdi_writeback_congested *
231	231	wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp);
232	232	void wb_congested_put(struct bdi_writeback_congested *congested);
	233	+struct bdi_writeback wb_get_lookup(struct backing_dev_info bdi,
	234	+ struct cgroup_subsys_state *memcg_css);
233	235	struct bdi_writeback wb_get_create(struct backing_dev_info bdi,
234	236	struct cgroup_subsys_state *memcg_css,
235	237	gfp_t gfp);

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