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