693 void wbc_attach_and_unlock_inode(struct writeback_control *wbc,  in wbc_attach_and_unlock_inode()  argument
701 	wbc->wb = inode_to_wb(inode);  in wbc_attach_and_unlock_inode()
702 	wbc->inode = inode;  in wbc_attach_and_unlock_inode()
704 	wbc->wb_id = wbc->wb->memcg_css->id;  in wbc_attach_and_unlock_inode()
705 	wbc->wb_lcand_id = inode->i_wb_frn_winner;  in wbc_attach_and_unlock_inode()
706 	wbc->wb_tcand_id = 0;  in wbc_attach_and_unlock_inode()
707 	wbc->wb_bytes = 0;  in wbc_attach_and_unlock_inode()
708 	wbc->wb_lcand_bytes = 0;  in wbc_attach_and_unlock_inode()
709 	wbc->wb_tcand_bytes = 0;  in wbc_attach_and_unlock_inode()
711 	wb_get(wbc->wb);  in wbc_attach_and_unlock_inode()
721 	if (unlikely(wb_dying(wbc->wb) && !css_is_dying(wbc->wb->memcg_css)))  in wbc_attach_and_unlock_inode()
722 		inode_switch_wbs(inode, wbc->wb_id);  in wbc_attach_and_unlock_inode()
763 void wbc_detach_inode(struct writeback_control *wbc)  in wbc_detach_inode()  argument
765 	struct bdi_writeback *wb = wbc->wb;  in wbc_detach_inode()
766 	struct inode *inode = wbc->inode;  in wbc_detach_inode()
778 	if (wbc->wb_bytes >= wbc->wb_lcand_bytes &&  in wbc_detach_inode()
779 	    wbc->wb_bytes >= wbc->wb_tcand_bytes) {  in wbc_detach_inode()
780 		max_id = wbc->wb_id;  in wbc_detach_inode()
781 		max_bytes = wbc->wb_bytes;  in wbc_detach_inode()
782 	} else if (wbc->wb_lcand_bytes >= wbc->wb_tcand_bytes) {  in wbc_detach_inode()
783 		max_id = wbc->wb_lcand_id;  in wbc_detach_inode()
784 		max_bytes = wbc->wb_lcand_bytes;  in wbc_detach_inode()
786 		max_id = wbc->wb_tcand_id;  in wbc_detach_inode()
787 		max_bytes = wbc->wb_tcand_bytes;  in wbc_detach_inode()
819 		if (wbc->wb_id != max_id)  in wbc_detach_inode()
823 			trace_inode_foreign_history(inode, wbc, history);  in wbc_detach_inode()
844 	wb_put(wbc->wb);  in wbc_detach_inode()
845 	wbc->wb = NULL;  in wbc_detach_inode()
859 void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,  in wbc_account_cgroup_owner()  argument
872 	if (!wbc->wb || wbc->no_cgroup_owner)  in wbc_account_cgroup_owner()
883 	if (id == wbc->wb_id) {  in wbc_account_cgroup_owner()
884 		wbc->wb_bytes += bytes;  in wbc_account_cgroup_owner()
888 	if (id == wbc->wb_lcand_id)  in wbc_account_cgroup_owner()
889 		wbc->wb_lcand_bytes += bytes;  in wbc_account_cgroup_owner()
892 	if (!wbc->wb_tcand_bytes)  in wbc_account_cgroup_owner()
893 		wbc->wb_tcand_id = id;  in wbc_account_cgroup_owner()
894 	if (id == wbc->wb_tcand_id)  in wbc_account_cgroup_owner()
895 		wbc->wb_tcand_bytes += bytes;  in wbc_account_cgroup_owner()
897 		wbc->wb_tcand_bytes -= min(bytes, wbc->wb_tcand_bytes);  in wbc_account_cgroup_owner()
1450 static int write_inode(struct inode *inode, struct writeback_control *wbc)  in write_inode()  argument
1455 		trace_writeback_write_inode_start(inode, wbc);  in write_inode()
1456 		ret = inode->i_sb->s_op->write_inode(inode, wbc);  in write_inode()
1457 		trace_writeback_write_inode(inode, wbc);  in write_inode()
1522 			  struct writeback_control *wbc)  in requeue_inode()  argument
1533 	    (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages))  in requeue_inode()
1536 	if (wbc->pages_skipped) {  in requeue_inode()
1555 		if (wbc->nr_to_write <= 0) {  in requeue_inode()
1597 __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)  in __writeback_single_inode()  argument
1600 	long nr_to_write = wbc->nr_to_write;  in __writeback_single_inode()
1606 	trace_writeback_single_inode_start(inode, wbc, nr_to_write);  in __writeback_single_inode()
1608 	ret = do_writepages(mapping, wbc);  in __writeback_single_inode()
1617 	if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync) {  in __writeback_single_inode()
1629 	    (wbc->sync_mode == WB_SYNC_ALL ||  in __writeback_single_inode()
1664 			wbc->unpinned_fscache_wb = true;  in __writeback_single_inode()
1673 		int err = write_inode(inode, wbc);  in __writeback_single_inode()
1677 	wbc->unpinned_fscache_wb = false;  in __writeback_single_inode()
1678 	trace_writeback_single_inode(inode, wbc, nr_to_write);  in __writeback_single_inode()
1692 				  struct writeback_control *wbc)  in writeback_single_inode()  argument
1710 		if (wbc->sync_mode != WB_SYNC_ALL)  in writeback_single_inode()
1723 	    (wbc->sync_mode != WB_SYNC_ALL ||  in writeback_single_inode()
1727 	wbc_attach_and_unlock_inode(wbc, inode);  in writeback_single_inode()
1729 	ret = __writeback_single_inode(inode, wbc);  in writeback_single_inode()
1731 	wbc_detach_inode(wbc);  in writeback_single_inode()
1810 	struct writeback_control wbc = {  in writeback_sb_inodes()  local
1859 		if ((inode->i_state & I_SYNC) && wbc.sync_mode != WB_SYNC_ALL) {  in writeback_sb_inodes()
1889 		wbc_attach_and_unlock_inode(&wbc, inode);  in writeback_sb_inodes()
1892 		wbc.nr_to_write = write_chunk;  in writeback_sb_inodes()
1893 		wbc.pages_skipped = 0;  in writeback_sb_inodes()
1899 		__writeback_single_inode(inode, &wbc);  in writeback_sb_inodes()
1901 		wbc_detach_inode(&wbc);  in writeback_sb_inodes()
1902 		work->nr_pages -= write_chunk - wbc.nr_to_write;  in writeback_sb_inodes()
1903 		wrote = write_chunk - wbc.nr_to_write - wbc.pages_skipped;  in writeback_sb_inodes()
1928 		requeue_inode(inode, tmp_wb, &wbc);  in writeback_sb_inodes()
2760 	struct writeback_control wbc = {  in write_inode_now()  local
2768 		wbc.nr_to_write = 0;  in write_inode_now()
2771 	return writeback_single_inode(inode, &wbc);  in write_inode_now()
2786 	struct writeback_control wbc = {  in sync_inode_metadata()  local
2791 	return writeback_single_inode(inode, &wbc);  in sync_inode_metadata()