Changeset 625 for trunk/kernel/mm/vseg.h

Timestamp:

Apr 10, 2019, 10:09:39 AM (6 years ago)

Author:

alain

Message:

Fix a bug in the vmm_remove_vseg() function: the physical pages
associated to an user DATA vseg were released to the kernel when
the target process descriptor was in the reference cluster.
This physical pages release should be done only when the page
forks counter value is zero.
All other modifications are cosmetic.

File:

• trunk/kernel/mm/vseg.h (modified) (2 diffs)

trunk/kernel/mm/vseg.h

@@ -70 +70 @@
 /*******************************************************************************************
  * This structure defines a virtual segment descriptor.
- * - The VSL contains only local vsegs, but is implemented as an xlist, because it can be
- *   accessed by thread running in a remote cluster.
- * - The zombi list is used by the local MMAP allocator. It is implemented as a local list.
+ * The VSL contains only local vsegs, but is implemented as an xlist, because it can be
+ * accessed by a thread running in a remote cluster.
+ * The xlist field is also used to implement the zombi lists used by the MMAP allocator.
  ******************************************************************************************/
 
@@ -78 +78 @@
 {
     xlist_entry_t     xlist;        /*! all vsegs in same VSL                             */
-    list_entry_t      zlist;        /*! all vsegs in same zombi list                      */
     struct vmm_s    * vmm;          /*! pointer on associated VM manager                  */
     uint32_t          type;         /*! vseg type                                         */