Tweaks to retirement handling

[yaffs2.git] / yaffs_guts.h

diff --git a/yaffs_guts.h b/yaffs_guts.h
index e66efcf206c50a55741e24a943592b1212c77d16..543bf628c77f91bfe3b8d7086183c1054a336279 100644 (file)
--- a/yaffs_guts.h
+++ b/yaffs_guts.h
@@ -14,7 +14,7 @@
  *
  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  *
- * $Id: yaffs_guts.h,v 1.23 2006-09-21 08:13:59 charles Exp $
+ * $Id: yaffs_guts.h,v 1.25 2006-10-13 08:52:49 charles Exp $
  */
 
 #ifndef __YAFFS_GUTS_H__
@@ -69,6 +69,8 @@
 
 #define YAFFS_NCHECKPOINT_OBJECTS      5000
 
+#define YAFFS_CHECKPOINT_VERSION       2
+
 #ifdef CONFIG_YAFFS_UNICODE
 #define YAFFS_MAX_NAME_LENGTH          127
 #define YAFFS_MAX_ALIAS_LENGTH         79
@@ -268,14 +270,15 @@ typedef enum {
 
 typedef struct {
 
-       int softDeletions:12;   /* number of soft deleted pages */
-       int pagesInUse:12;      /* number of pages in use */
+       int softDeletions:10;   /* number of soft deleted pages */
+       int pagesInUse:10;      /* number of pages in use */
        yaffs_BlockState blockState:4;  /* One of the above block states */
        __u32 needsRetiring:1;  /* Data has failed on this block, need to get valid data off */
                                /* and retire the block. */
        __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
        __u32 gcPrioritise: 1;  /* An ECC check or bank check has failed on this block. 
                                   It should be prioritised for GC */
+        __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
 
 #ifdef CONFIG_YAFFS_YAFFS2
        __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
@@ -524,7 +527,7 @@ struct yaffs_DeviceStruct {
        const char *name;
 
        /* Entry parameters set up way early. Yaffs sets up the rest.*/
-       int nBytesPerChunk;     /* Should be a power of 2 >= 512 */
+       int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
        int nChunksPerBlock;    /* does not need to be a power of 2 */
        int nBytesPerSpare;     /* spare area size */
        int startBlock;         /* Start block we're allowed to use */
@@ -606,6 +609,16 @@ struct yaffs_DeviceStruct {
        __u32 tnodeWidth;
        __u32 tnodeMask;
        
+       /* Stuff to support various file offses to chunk/offset translations */
+       /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
+       __u32 crumbMask;
+       __u32 crumbShift;
+       __u32 crumbsPerChunk;
+       
+       /* Straight shifting for nDataBytesPerChunk being a power of 2 */
+       __u32 chunkShift;
+       __u32 chunkMask;
+       
 
 #ifdef __KERNEL__
 
@@ -621,6 +634,7 @@ struct yaffs_DeviceStruct {
        
        int isCheckpointed;
 
+
        /* Stuff to support block offsetting to support start block zero */
        int internalStartBlock;
        int internalEndBlock;
@@ -693,6 +707,8 @@ struct yaffs_DeviceStruct {
        int tagsEccUnfixed;
        int nDeletions;
        int nUnmarkedDeletions;
+       
+       int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
 
        /* Special directories */
        yaffs_Object *rootDir;
@@ -808,11 +824,11 @@ int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
 int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
 
 /* File operations */
-int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, __u32 offset,
+int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
                           int nBytes);
-int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, __u32 offset,
+int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
                          int nBytes, int writeThrough);
-int yaffs_ResizeFile(yaffs_Object * obj, int newSize);
+int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
 
 yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
                              __u32 mode, __u32 uid, __u32 gid);
@@ -872,5 +888,6 @@ void yaffs_GutsTest(yaffs_Device * dev);
 void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
 void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn);
 int yaffs_CheckFF(__u8 * buffer, int nBytes);
+void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
 
 #endif