13  * When UBIFS is mounted, it checks a flag on the master node to determine if
31  * Hence, if UBIFS finds a corrupted node at offset X, it expects only the min.
85  * get_master_node - get the last valid master node allowing for corruption.
89  * @mst: master node, if found, is returned here
93  * returns the last valid master node allowing for one area of corruption.
95  * that it is the result of an unclean unmount while the master node was being
97  * master node.
116 	/* Find the first position that is definitely not a node */  in get_master_node()
129 	/* See if there was a valid master node before that */  in get_master_node()
147 				 * trying to write a master node.  in get_master_node()
156 			dbg_rcvry("found a master node at %d:%d", lnum, offs);  in get_master_node()
190  * write_rcvrd_mst_node - write recovered master node.
192  * @mst: master node
220  * ubifs_recover_master_node - recover the master node.
223  * This function recovers the master node from corruption that may occur due to
280 			 * there must be only one master node in the first LEB  in ubifs_recover_master_node()
300 	ubifs_msg(c, "recovered master node from LEB %d",  in ubifs_recover_master_node()
315 		 * We had to recover the master node, which means there was an  in ubifs_recover_master_node()
316 		 * unclean reboot. However, it is possible that the master node  in ubifs_recover_master_node()
320 		 * 1. UBIFS was cleanly unmounted, so the master node is clean  in ubifs_recover_master_node()
322 		 *    node in the first (%UBIFS_MST_LNUM). A power cut happens,  in ubifs_recover_master_node()
326 		 *    recover the master node from the second LEB  in ubifs_recover_master_node()
330 		 * 4. However, this master node (@c->mst_node) is marked as  in ubifs_recover_master_node()
333 		 *    node when it is re-mounter R/W later.  in ubifs_recover_master_node()
335 		 *    Thus, to force the recovery by marking the master node as  in ubifs_recover_master_node()
341 		/* Write the recovered master node */  in ubifs_recover_master_node()
357 	ubifs_err(c, "failed to recover master node");  in ubifs_recover_master_node()
359 		ubifs_err(c, "dumping first master node");  in ubifs_recover_master_node()
363 		ubifs_err(c, "dumping second master node");  in ubifs_recover_master_node()
372  * ubifs_write_rcvrd_mst_node - write the recovered master node.
375  * This function writes the master node that was recovered during mounting in
460  * This function ensures that the corrupted node at @offs is the last thing
470 	/* Check for empty space after the corrupt node's common header */  in no_more_nodes()
482 	/* Now we know the corrupt node's length we can skip over it */  in no_more_nodes()
502 	/* Get the end offset of the last node we are keeping */  in fix_unclean_leb()
578 		ch = snod->node;  in drop_last_group()
582 		dbg_rcvry("dropping grouped node at %d:%d",  in drop_last_group()
592  * drop_last_node - drop the last node.
597  * node of the scanned LEB.
607 		dbg_rcvry("dropping last node at %d:%d",  in drop_last_node()
657 			/* A valid node, and not a padding node */  in ubifs_recover_leb()
669 			/* Padding bytes or a valid padding node */  in ubifs_recover_leb()
729 		 * contains valid nodes or the end of a valid node, and the  in ubifs_recover_leb()
739 		 * padding node there? We can, and this works fine with one  in ubifs_recover_leb()
759 		 * because of the padding node which we added to LEB Y. The  in ubifs_recover_leb()
801  * @lnum: LEB number of commit start node
802  * @offs: offset of commit start node
825 		ubifs_err(c, "Not a valid node");  in get_cs_sqnum()
829 		ubifs_err(c, "Node a CS node, type is %d", cs_node->ch.node_type);  in get_cs_sqnum()
833 		ubifs_err(c, "CS node cmt_no %llu != current cmt_no %llu",  in get_cs_sqnum()
1016 			/* A valid node, and not a padding node */  in clean_an_unclean_leb()
1028 			/* Padding bytes or a valid padding node */  in clean_an_unclean_leb()
1155  * written to the master node on unmounting. In the case of an unclean unmount
1156  * the value of gc_lnum recorded in the master node is out of date and cannot
1348  * @key: node key
1349  * @deletion: node is for a deletion
1357  * the size from the inode node, the maximum size of any data node (also altered
1358  * by truncations) and a flag indicating a inode number for which no inode node
1428 	/* Locate the inode node LEB number and offset */  in fix_size_in_place()
1434 	 * If the size recorded on the inode node is greater than the size that  in fix_size_in_place()