include/linux/backing-dev-defs.h

108 struct bdi_writeback {  struct
109 	struct backing_dev_info *bdi;	/* our parent bdi */
111 	unsigned long state;		/* Always use atomic bitops on this */
112 	unsigned long last_old_flush;	/* last old data flush */
114 	struct list_head b_dirty;	/* dirty inodes */
115 	struct list_head b_io;		/* parked for writeback */
116 	struct list_head b_more_io;	/* parked for more writeback */
117 	struct list_head b_dirty_time;	/* time stamps are dirty */
118 	spinlock_t list_lock;		/* protects the b_* lists */
120 	struct percpu_counter stat[NR_WB_STAT_ITEMS];
122 	unsigned long congested;	/* WB_[a]sync_congested flags */
124 	unsigned long bw_time_stamp;	/* last time write bw is updated */
125 	unsigned long dirtied_stamp;
126 	unsigned long written_stamp;	/* pages written at bw_time_stamp */
127 	unsigned long write_bandwidth;	/* the estimated write bandwidth */
128 	unsigned long avg_write_bandwidth; /* further smoothed write bw, > 0 */
136 	unsigned long dirty_ratelimit;
137 	unsigned long balanced_dirty_ratelimit;
139 	struct fprop_local_percpu completions;
140 	int dirty_exceeded;
141 	enum wb_reason start_all_reason;
143 	spinlock_t work_lock;		/* protects work_list & dwork scheduling */
144 	struct list_head work_list;
145 	struct delayed_work dwork;	/* work item used for writeback */
147 	unsigned long dirty_sleep;	/* last wait */
149 	struct list_head bdi_node;	/* anchored at bdi->wb_list */
152 	struct percpu_ref refcnt;	/* used only for !root wb's */
153 	struct fprop_local_percpu memcg_completions;
154 	struct cgroup_subsys_state *memcg_css; /* the associated memcg */
155 	struct cgroup_subsys_state *blkcg_css; /* and blkcg */
156 	struct list_head memcg_node;	/* anchored at memcg->cgwb_list */
157 	struct list_head blkcg_node;	/* anchored at blkcg->cgwb_list */
159 	union {