wb_stat_item 72 include/linux/backing-dev.h enum wb_stat_item item, s64 amount) wb_stat_item 77 include/linux/backing-dev.h static inline void inc_wb_stat(struct bdi_writeback *wb, enum wb_stat_item item) wb_stat_item 82 include/linux/backing-dev.h static inline void dec_wb_stat(struct bdi_writeback *wb, enum wb_stat_item item) wb_stat_item 87 include/linux/backing-dev.h static inline s64 wb_stat(struct bdi_writeback *wb, enum wb_stat_item item) wb_stat_item 92 include/linux/backing-dev.h static inline s64 wb_stat_sum(struct bdi_writeback *wb, enum wb_stat_item item)