Fix issue with rescan of pending retired blocks
[yaffs2.git] / yaffs_guts.c
index b90313e..f88851e 100644 (file)
@@ -13,7 +13,7 @@
  */
 
 const char *yaffs_guts_c_version =
-    "$Id: yaffs_guts.c,v 1.44 2006-11-11 23:27:44 charles Exp $";
+    "$Id: yaffs_guts.c,v 1.45 2006-11-14 03:07:17 charles Exp $";
 
 #include "yportenv.h"
 
@@ -5420,39 +5420,41 @@ static int yaffs_ScanBackwards(yaffs_Device * dev)
                                        state = YAFFS_BLOCK_STATE_EMPTY;
                                        dev->nErasedBlocks++;
                                } else {
-                                       /* this is the block being allocated from */
-                                       if (state ==
-                                           YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-                                               T(YAFFS_TRACE_SCAN,
-                                                 (TSTR
-                                                  (" Allocating from %d %d"
-                                                   TENDSTR), blk, c));
+                                       if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+                                           state == YAFFS_BLOCK_STATE_ALLOCATING) {
+                                               if(dev->sequenceNumber == bi->sequenceNumber) {
+                                                       /* this is the block being allocated from */
+                                               
+                                                       T(YAFFS_TRACE_SCAN,
+                                                         (TSTR
+                                                          (" Allocating from %d %d"
+                                                           TENDSTR), blk, c));
+
+                                                       state = YAFFS_BLOCK_STATE_ALLOCATING;
+                                                       dev->allocationBlock = blk;
+                                                       dev->allocationPage = c;
+                                                       dev->allocationBlockFinder = blk;       
+                                               }
+                                               else {
+                                                       /* This is a partially written block that is not
+                                                        * the current allocation block. This block must have
+                                                        * had a write failure, so set up for retirement.
+                                                        */
+                                                 
+                                                        bi->needsRetiring = 1;
+                                                        bi->gcPrioritise = 1;
+                                                                                                        
+                                                        T(YAFFS_TRACE_ALWAYS,
+                                                        (TSTR("Partially written block %d being set for retirement" TENDSTR),
+                                                        blk));
+                                               }
+
                                        }
-                                       state = YAFFS_BLOCK_STATE_ALLOCATING;
-                                       dev->allocationBlock = blk;
-                                       dev->allocationPage = c;
-                                       dev->allocationBlockFinder = blk;       
-                                       /* Set it to here to encourage the allocator to 
-                                        *  go forth from here.
-                                        */
                                         
-                                       /* Yaffs2 sanity check:
-                                        * This should be the one with the highest sequence number
-                                        */
-                                       if (dev->isYaffs2
-                                           && (dev->sequenceNumber !=
-                                               bi->sequenceNumber)) {
-                                               T(YAFFS_TRACE_ALWAYS,
-                                                 (TSTR
-                                                  ("yaffs: Allocation block %d was not highest sequence "
-                                                   "id: block seq = %d, dev seq = %d"
-                                                   TENDSTR), blk,
-                                                  bi->sequenceNumber,
-                                                  dev->sequenceNumber));
-                                       }
                                }
 
                                dev->nFreeChunks++;
+                               
                        } else if (tags.chunkId > 0) {
                                /* chunkId > 0 so it is a data chunk... */
                                unsigned int endpos;