Changeset 612 for trunk/kernel/mm

Timestamp:

Jan 11, 2019, 6:35:07 PM (6 years ago)

Author:

alain

Message:

Fix several bugs in vfs.c, fatfs.c, and devfs.c to support
the <.> and <..> directory entries.

Location:

trunk/kernel/mm

Files:

• kmem.c (modified) (2 diffs)
• mapper.h (modified) (2 diffs)
• page.h (modified) (2 diffs)

trunk/kernel/mm/kmem.c

@@ -40 +40 @@
 #include <fatfs.h>
 #include <ramfs.h>
-#include <remote_dir.h>
+#include <user_dir.h>
 #include <remote_sem.h>
 #include <remote_barrier.h>
@@ -101 +101 @@
     else if( type == KMEM_CONDVAR )       return sizeof( remote_condvar_t );
     else if( type == KMEM_MUTEX )         return sizeof( remote_mutex_t );
-    else if( type == KMEM_DIR )           return sizeof( remote_dir_t );
+    else if( type == KMEM_DIR )           return sizeof( user_dir_t );
 
         else if( type == KMEM_512_BYTES )     return 512;

trunk/kernel/mm/mapper.h

@@ -38 +38 @@
 
 /*******************************************************************************************
- * The mapper implements the kernel cache for a given file or directory.
+ * The mapper implements the kernel cache for a given VFS file or directory.
  * There is one mapper per file/dir. It is implemented as a three levels radix tree,
  * entirely stored in the same cluster as the inode representing the file/dir.
@@ -61 +61 @@
  * - In the present implementation the cache size for a given file increases on demand,
  *   and the  allocated memory is only released when the mapper/inode is destroyed.
+ *
+ * TODO : the mapper being only used to implement the VFS cache(s), the mapper.c
+ *        and mapper.h file should beerro trandfered to the vfs directory.
  ******************************************************************************************/
 

trunk/kernel/mm/page.h

@@ -37 +37 @@
 /*************************************************************************************
  * This  defines the flags that can be attached to a physical page.
- * TODO : the PG_BUFFER and PG_IO_ERR flags semantic is not defined [AG]
  ************************************************************************************/
 
@@ -43 +42 @@
 #define PG_RESERVED         0x0002     // cannot be allocated by PPM
 #define PG_FREE             0x0004     // page can be allocated by PPM
-#define PG_IO_ERR           0x0010     // mapper signals access error    TODO ??? [AG]
-#define PG_BUFFER           0x0020     // used in blockio.c              TODO ??? [AG]
 #define PG_DIRTY            0x0040     // page has been written
 #define PG_COW          0x0080     // page is copy-on-write