btrfs: return bool from btrfs_should_end_transaction

Results in slightly smaller code.

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-11 (-11)
Function                                     old     new   delta
btrfs_should_end_transaction                  96      85     -11
Total: Before=20070, After=20059, chg -0.05%
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/transaction.c

@@ -908,14 +908,14 @@ static bool should_end_transaction(struct btrfs_trans_handle *trans)
 	return !!btrfs_block_rsv_check(&fs_info->global_block_rsv, 5);
 }
 
-int btrfs_should_end_transaction(struct btrfs_trans_handle *trans)
+bool btrfs_should_end_transaction(struct btrfs_trans_handle *trans)
 {
 	struct btrfs_transaction *cur_trans = trans->transaction;
 
 	smp_mb();
 	if (cur_trans->state >= TRANS_STATE_COMMIT_START ||
 	    cur_trans->delayed_refs.flushing)
-		return 1;
+		return true;
 
 	return should_end_transaction(trans);
 }

fs/btrfs/transaction.h

@@ -218,7 +218,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans);
 int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
 				   int wait_for_unblock);
 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans);
-int btrfs_should_end_transaction(struct btrfs_trans_handle *trans);
+bool btrfs_should_end_transaction(struct btrfs_trans_handle *trans);
 void btrfs_throttle(struct btrfs_fs_info *fs_info);
 int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root);