66  *     the tail of space_info->tickets, kick async flush thread
300 			  enum btrfs_reserve_flush_enum flush)  in calc_available_free_space()  argument
324 	 * 1/2th of the space. If we can flush, don't let us overcommit  in calc_available_free_space()
327 	if (flush == BTRFS_RESERVE_FLUSH_ALL)  in calc_available_free_space()
336 			 enum btrfs_reserve_flush_enum flush)  in btrfs_can_overcommit()  argument
346 	avail = calc_available_free_space(fs_info, space_info, flush);  in btrfs_can_overcommit()
371 	enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_NO_FLUSH;  in btrfs_try_granting_tickets()  local
386 					 flush)) {  in btrfs_try_granting_tickets()
401 		flush = BTRFS_RESERVE_FLUSH_ALL;  in btrfs_try_granting_tickets()
497 	/* Calc the number of the pages we need flush for space reservation */  in shrink_delalloc()
527 	 * ordered extents, otherwise we'll waste time trying to flush delalloc  in shrink_delalloc()
664  * Try to flush some data based on policy set by @state. This is only advisory
915  * will loop and continuously try to flush as long as we are making progress.
933 		space_info->flush = 0;  in btrfs_async_reclaim_metadata_space()
945 			space_info->flush = 0;  in btrfs_async_reclaim_metadata_space()
980 					space_info->flush = 0;  in btrfs_async_reclaim_metadata_space()
1062 		space_info->flush = 0;  in btrfs_async_reclaim_data_space()
1073 			space_info->flush = 0;  in btrfs_async_reclaim_data_space()
1086 			space_info->flush = 0;  in btrfs_async_reclaim_data_space()
1103 					space_info->flush = 0;  in btrfs_async_reclaim_data_space()
1219  * @flush - how much we can flush
1221  * This does the work of figuring out how to flush for the ticket, waiting for
1227 				 enum btrfs_reserve_flush_enum flush)  in handle_reserve_ticket()  argument
1231 	switch (flush) {  in handle_reserve_ticket()
1286  * This returns true if this flush state will go through the ordinary flushing
1289 static inline bool is_normal_flushing(enum btrfs_reserve_flush_enum flush)  in is_normal_flushing()  argument
1291 	return	(flush == BTRFS_RESERVE_FLUSH_ALL) ||  in is_normal_flushing()
1292 		(flush == BTRFS_RESERVE_FLUSH_ALL_STEAL);  in is_normal_flushing()
1300  * @flush - whether or not we can flush to make our reservation
1304  * flush out space to make room.  It will do this by flushing delalloc if
1305  * possible or committing the transaction.  If flush is 0 then no attempts to
1311 			   enum btrfs_reserve_flush_enum flush)  in __reserve_bytes()  argument
1320 	ASSERT(!current->journal_info || flush != BTRFS_RESERVE_FLUSH_ALL);  in __reserve_bytes()
1322 	if (flush == BTRFS_RESERVE_FLUSH_DATA)  in __reserve_bytes()
1336 	if (is_normal_flushing(flush) || (flush == BTRFS_RESERVE_NO_FLUSH))  in __reserve_bytes()
1348 	     btrfs_can_overcommit(fs_info, space_info, orig_bytes, flush))) {  in __reserve_bytes()
1361 	if (ret && flush != BTRFS_RESERVE_NO_FLUSH) {  in __reserve_bytes()
1366 		ticket.steal = (flush == BTRFS_RESERVE_FLUSH_ALL_STEAL);  in __reserve_bytes()
1367 		if (flush == BTRFS_RESERVE_FLUSH_ALL ||  in __reserve_bytes()
1368 		    flush == BTRFS_RESERVE_FLUSH_ALL_STEAL ||  in __reserve_bytes()
1369 		    flush == BTRFS_RESERVE_FLUSH_DATA) {  in __reserve_bytes()
1371 			if (!space_info->flush) {  in __reserve_bytes()
1372 				space_info->flush = 1;  in __reserve_bytes()
1375 							  orig_bytes, flush,  in __reserve_bytes()
1394 						  orig_bytes, flush, "preempt");  in __reserve_bytes()
1400 	if (!ret || flush == BTRFS_RESERVE_NO_FLUSH)  in __reserve_bytes()
1403 	return handle_reserve_ticket(fs_info, space_info, &ticket, flush);  in __reserve_bytes()
1411  * @flush - whether or not we can flush to make our reservation
1415  * flush out space to make room.  It will do this by flushing delalloc if
1416  * possible or committing the transaction.  If flush is 0 then no attempts to
1423 				 enum btrfs_reserve_flush_enum flush)  in btrfs_reserve_metadata_bytes()  argument
1429 	ret = __reserve_bytes(fs_info, block_rsv->space_info, orig_bytes, flush);  in btrfs_reserve_metadata_bytes()
1452  * @flush - how we are allowed to flush
1455  * space then we will attempt to flush space as specified by flush.
1458 			     enum btrfs_reserve_flush_enum flush)  in btrfs_reserve_data_bytes()  argument
1463 	ASSERT(flush == BTRFS_RESERVE_FLUSH_DATA ||  in btrfs_reserve_data_bytes()
1464 	       flush == BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE);  in btrfs_reserve_data_bytes()
1465 	ASSERT(!current->journal_info || flush != BTRFS_RESERVE_FLUSH_DATA);  in btrfs_reserve_data_bytes()
1467 	ret = __reserve_bytes(fs_info, data_sinfo, bytes, flush);  in btrfs_reserve_data_bytes()