558 void wbc_attach_and_unlock_inode(struct writeback_control *wbc,  in wbc_attach_and_unlock_inode()  argument
566 	wbc->wb = inode_to_wb(inode);  in wbc_attach_and_unlock_inode()
567 	wbc->inode = inode;  in wbc_attach_and_unlock_inode()
569 	wbc->wb_id = wbc->wb->memcg_css->id;  in wbc_attach_and_unlock_inode()
570 	wbc->wb_lcand_id = inode->i_wb_frn_winner;  in wbc_attach_and_unlock_inode()
571 	wbc->wb_tcand_id = 0;  in wbc_attach_and_unlock_inode()
572 	wbc->wb_bytes = 0;  in wbc_attach_and_unlock_inode()
573 	wbc->wb_lcand_bytes = 0;  in wbc_attach_and_unlock_inode()
574 	wbc->wb_tcand_bytes = 0;  in wbc_attach_and_unlock_inode()
576 	wb_get(wbc->wb);  in wbc_attach_and_unlock_inode()
586 	if (unlikely(wb_dying(wbc->wb) && !css_is_dying(wbc->wb->memcg_css)))  in wbc_attach_and_unlock_inode()
587 		inode_switch_wbs(inode, wbc->wb_id);  in wbc_attach_and_unlock_inode()
628 void wbc_detach_inode(struct writeback_control *wbc)  in wbc_detach_inode()  argument
630 	struct bdi_writeback *wb = wbc->wb;  in wbc_detach_inode()
631 	struct inode *inode = wbc->inode;  in wbc_detach_inode()
643 	if (wbc->wb_bytes >= wbc->wb_lcand_bytes &&  in wbc_detach_inode()
644 	    wbc->wb_bytes >= wbc->wb_tcand_bytes) {  in wbc_detach_inode()
645 		max_id = wbc->wb_id;  in wbc_detach_inode()
646 		max_bytes = wbc->wb_bytes;  in wbc_detach_inode()
647 	} else if (wbc->wb_lcand_bytes >= wbc->wb_tcand_bytes) {  in wbc_detach_inode()
648 		max_id = wbc->wb_lcand_id;  in wbc_detach_inode()
649 		max_bytes = wbc->wb_lcand_bytes;  in wbc_detach_inode()
651 		max_id = wbc->wb_tcand_id;  in wbc_detach_inode()
652 		max_bytes = wbc->wb_tcand_bytes;  in wbc_detach_inode()
684 		if (wbc->wb_id != max_id)  in wbc_detach_inode()
688 			trace_inode_foreign_history(inode, wbc, history);  in wbc_detach_inode()
709 	wb_put(wbc->wb);  in wbc_detach_inode()
710 	wbc->wb = NULL;  in wbc_detach_inode()
724 void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,  in wbc_account_cgroup_owner()  argument
736 	if (!wbc->wb || wbc->no_cgroup_owner)  in wbc_account_cgroup_owner()
746 	if (id == wbc->wb_id) {  in wbc_account_cgroup_owner()
747 		wbc->wb_bytes += bytes;  in wbc_account_cgroup_owner()
751 	if (id == wbc->wb_lcand_id)  in wbc_account_cgroup_owner()
752 		wbc->wb_lcand_bytes += bytes;  in wbc_account_cgroup_owner()
755 	if (!wbc->wb_tcand_bytes)  in wbc_account_cgroup_owner()
756 		wbc->wb_tcand_id = id;  in wbc_account_cgroup_owner()
757 	if (id == wbc->wb_tcand_id)  in wbc_account_cgroup_owner()
758 		wbc->wb_tcand_bytes += bytes;  in wbc_account_cgroup_owner()
760 		wbc->wb_tcand_bytes -= min(bytes, wbc->wb_tcand_bytes);  in wbc_account_cgroup_owner()
1314 static int write_inode(struct inode *inode, struct writeback_control *wbc)  in write_inode()  argument
1319 		trace_writeback_write_inode_start(inode, wbc);  in write_inode()
1320 		ret = inode->i_sb->s_op->write_inode(inode, wbc);  in write_inode()
1321 		trace_writeback_write_inode(inode, wbc);  in write_inode()
1386 			  struct writeback_control *wbc)  in requeue_inode()  argument
1397 	    (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages))  in requeue_inode()
1400 	if (wbc->pages_skipped) {  in requeue_inode()
1414 		if (wbc->nr_to_write <= 0) {  in requeue_inode()
1450 __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)  in __writeback_single_inode()  argument
1453 	long nr_to_write = wbc->nr_to_write;  in __writeback_single_inode()
1459 	trace_writeback_single_inode_start(inode, wbc, nr_to_write);  in __writeback_single_inode()
1461 	ret = do_writepages(mapping, wbc);  in __writeback_single_inode()
1470 	if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync) {  in __writeback_single_inode()
1486 	     wbc->sync_mode == WB_SYNC_ALL || wbc->for_sync ||  in __writeback_single_inode()
1516 		int err = write_inode(inode, wbc);  in __writeback_single_inode()
1520 	trace_writeback_single_inode(inode, wbc, nr_to_write);  in __writeback_single_inode()
1533 				  struct writeback_control *wbc)  in writeback_single_inode()  argument
1545 		if (wbc->sync_mode != WB_SYNC_ALL)  in writeback_single_inode()
1564 	    (wbc->sync_mode != WB_SYNC_ALL ||  in writeback_single_inode()
1568 	wbc_attach_and_unlock_inode(wbc, inode);  in writeback_single_inode()
1570 	ret = __writeback_single_inode(inode, wbc);  in writeback_single_inode()
1572 	wbc_detach_inode(wbc);  in writeback_single_inode()
1633 	struct writeback_control wbc = {  in writeback_sb_inodes()  local
1681 		if ((inode->i_state & I_SYNC) && wbc.sync_mode != WB_SYNC_ALL) {  in writeback_sb_inodes()
1711 		wbc_attach_and_unlock_inode(&wbc, inode);  in writeback_sb_inodes()
1714 		wbc.nr_to_write = write_chunk;  in writeback_sb_inodes()
1715 		wbc.pages_skipped = 0;  in writeback_sb_inodes()
1721 		__writeback_single_inode(inode, &wbc);  in writeback_sb_inodes()
1723 		wbc_detach_inode(&wbc);  in writeback_sb_inodes()
1724 		work->nr_pages -= write_chunk - wbc.nr_to_write;  in writeback_sb_inodes()
1725 		wrote += write_chunk - wbc.nr_to_write;  in writeback_sb_inodes()
1748 		requeue_inode(inode, tmp_wb, &wbc);  in writeback_sb_inodes()
2578 	struct writeback_control wbc = {  in write_inode_now()  local
2586 		wbc.nr_to_write = 0;  in write_inode_now()
2589 	return writeback_single_inode(inode, &wbc);  in write_inode_now()
2604 int sync_inode(struct inode *inode, struct writeback_control *wbc)  in sync_inode()  argument
2606 	return writeback_single_inode(inode, wbc);  in sync_inode()
2621 	struct writeback_control wbc = {  in sync_inode_metadata()  local
2626 	return sync_inode(inode, &wbc);  in sync_inode_metadata()