1396  * This function locks the extent and properly waits for data=ordered extents
1422 		struct btrfs_ordered_extent *ordered;  in lock_and_cleanup_extent_if_need()  local
1426 		ordered = btrfs_lookup_ordered_range(inode, start_pos,  in lock_and_cleanup_extent_if_need()
1428 		if (ordered &&  in lock_and_cleanup_extent_if_need()
1429 		    ordered->file_offset + ordered->num_bytes > start_pos &&  in lock_and_cleanup_extent_if_need()
1430 		    ordered->file_offset <= last_pos) {  in lock_and_cleanup_extent_if_need()
1437 			btrfs_start_ordered_extent(ordered, 1);  in lock_and_cleanup_extent_if_need()
1438 			btrfs_put_ordered_extent(ordered);  in lock_and_cleanup_extent_if_need()
1441 		if (ordered)  in lock_and_cleanup_extent_if_need()
1442 			btrfs_put_ordered_extent(ordered);  in lock_and_cleanup_extent_if_need()
1492 		struct btrfs_ordered_extent *ordered;  in check_can_nocow()  local
1497 		ordered = btrfs_lookup_ordered_range(inode, lockstart,  in check_can_nocow()
1499 		if (ordered) {  in check_can_nocow()
1500 			btrfs_put_ordered_extent(ordered);  in check_can_nocow()
1538  * This function will flush ordered extents in the range to ensure proper
1544  * -EAGAIN	if we can't get the needed lock or there are ordered extents
2072  * It needs to call filemap_fdatawait so that all ordered extent updates are
2099 	 * races between hole detection during logging and completion of ordered  in btrfs_sync_file()
2100 	 * extents outside the range, to missing checksums due to ordered extents  in btrfs_sync_file()
2152 	 * wait for all ordered extents to complete below.  in btrfs_sync_file()
2165 	 * For a full fsync we wait for the ordered extents to complete while  in btrfs_sync_file()
2167 	 * attach the ordered extents to the transaction so that a transaction  in btrfs_sync_file()
2169 	 * the current transaction commits before the ordered extents complete  in btrfs_sync_file()
2176 		 * Get our ordered extents as soon as possible to avoid doing  in btrfs_sync_file()
2178 		 * checksums attached to the ordered extents.  in btrfs_sync_file()
2193 	 * update the last_trans of the inode during ordered extent completion,  in btrfs_sync_file()
2209 		 * An ordered extent might have started before and completed  in btrfs_sync_file()
2475 		struct btrfs_ordered_extent *ordered;  in btrfs_punch_hole_lock_range()  local
2482 		ordered = btrfs_lookup_first_ordered_extent(BTRFS_I(inode),  in btrfs_punch_hole_lock_range()
2486 		 * We need to make sure we have no ordered extents in this range  in btrfs_punch_hole_lock_range()
2490 		if ((!ordered ||  in btrfs_punch_hole_lock_range()
2491 		    (ordered->file_offset + ordered->num_bytes <= lockstart ||  in btrfs_punch_hole_lock_range()
2492 		     ordered->file_offset > lockend)) &&  in btrfs_punch_hole_lock_range()
2495 			if (ordered)  in btrfs_punch_hole_lock_range()
2496 				btrfs_put_ordered_extent(ordered);  in btrfs_punch_hole_lock_range()
2499 		if (ordered)  in btrfs_punch_hole_lock_range()
2500 			btrfs_put_ordered_extent(ordered);  in btrfs_punch_hole_lock_range()
3339 	 * wait for ordered IO before we have any locks.  We'll loop again  in btrfs_fallocate()
3355 		struct btrfs_ordered_extent *ordered;  in btrfs_fallocate()  local
3357 		/* the extent lock is ordered inside the running  in btrfs_fallocate()
3362 		ordered = btrfs_lookup_first_ordered_extent(BTRFS_I(inode),  in btrfs_fallocate()
3365 		if (ordered &&  in btrfs_fallocate()
3366 		    ordered->file_offset + ordered->num_bytes > alloc_start &&  in btrfs_fallocate()
3367 		    ordered->file_offset < alloc_end) {  in btrfs_fallocate()
3368 			btrfs_put_ordered_extent(ordered);  in btrfs_fallocate()
3381 			if (ordered)  in btrfs_fallocate()
3382 				btrfs_put_ordered_extent(ordered);  in btrfs_fallocate()
3630 	 * from there.  We have to do this otherwise we'll miss the ordered  in btrfs_fdatawrite_range()