Changeset 623 for trunk/kernel/mm/mapper.h

Timestamp:

Mar 6, 2019, 4:37:15 PM (4 years ago)

Author:

alain

Message:

Introduce three new types of vsegs (KCODE,KDATA,KDEV)
to map the kernel vsegs in the process VSL and GPT.
This now used by both the TSAR and the I86 architectures.

File:

• trunk/kernel/mm/mapper.h (modified) (4 diffs)

trunk/kernel/mm/mapper.h

@@ -3 +3 @@
  *
  * Authors   Mohamed Lamine Karaoui (2015)
- *           Alain Greiner (2016,2017,2018)
+ *           Alain Greiner (2016,2017,2018,2019)
  *
  * Copyright (c)  UPMC Sorbonne Universites
@@ -48 +48 @@
  *   "readers", and only one "writer".
  * - A "reader" thread, calling the mapper_remote_get_page() function to get a page 
- *   descriptor pointer from the page index in file, can be remote (running in any cluster). 
+ *   descriptor pointer from the page index in file, can be running in any cluster. 
  * - A "writer" thread, calling the mapper_handle_miss() function to handle a page miss
  *   must be local (running in the mapper cluster).
- * - The vfs_mapper_move_page() function access the file system to handle a mapper miss,
+ * - The vfs_fs_move_page() function access the file system to handle a mapper miss,
  *   or update a dirty page on device.
  * - The vfs_mapper_load_all() functions is used to load all pages of a directory 
@@ -63 +63 @@
  *
  * TODO : the mapper being only used to implement the VFS cache(s), the mapper.c
- *        and mapper.h file should be trandfered to the vfs directory.
+ *        and mapper.h file should be trandfered to the fs directory.
  ******************************************************************************************/
 
@@ -230 +230 @@
 
 /*******************************************************************************************
+ * This scans all pages present in the mapper identified by the <mapper> argument,
+ * and synchronize all pages maked as dirty" on disk. 
+ * These pages are unmarked and removed from the local PPM dirty_list. 
+ * This function must be called by a local thread running in same cluster as the mapper.
+ * A remote thread must call the RPC_MAPPER_SYNC function.
+ *******************************************************************************************
+ * @ mapper     : [in]  local pointer on local mapper.
+ * @ returns 0 if success / return -1 if error.
+ ******************************************************************************************/
+error_t mapper_sync( mapper_t *  mapper );
+
+/*******************************************************************************************
  * This debug function displays the content of a given page of a given mapper.
  * - the mapper is identified by the <mapper_xp> argument.