bdi_cap_writeback_dirty 2321 fs/fs-writeback.c WARN(bdi_cap_writeback_dirty(wb->bdi) && bdi_cap_writeback_dirty 2346 fs/fs-writeback.c if (bdi_cap_writeback_dirty(wb->bdi) && wakeup_bdi) bdi_cap_writeback_dirty 215 include/linux/backing-dev.h return bdi_cap_writeback_dirty(inode_to_bdi(mapping->host));