Changeset 5ee041e in mainline for uspace/srv/bd/hr/var.h

Timestamp:

2025-01-12T17:02:39Z (6 months ago)

Author:

Miroslav Cimerman <mc@…>

Children:

3a68baa

Parents:

58d82fa

Message:

hr: RAID1: deferred extent invalidation

File:

• uspace/srv/bd/hr/var.h (modified) (3 diffs)

uspace/srv/bd/hr/var.h

@@ -59 +59 @@
 } hr_ops_t;
 
+typedef struct hr_deferred_invalidation {
+        link_t link;
+        size_t index;
+        service_id_t svc_id;
+} hr_deferred_invalidation_t;
+
 typedef struct hr_volume {
         hr_ops_t hr_ops;
@@ -89 +95 @@
 
         size_t hotspare_no;
-        hr_extent_t hotspares[HR_MAX_HOTSPARES];
+        hr_extent_t hotspares[HR_MAX_HOTSPARES + HR_MAX_EXTENTS];
 
         /* protects hotspares (hotspares.{svc_id,status}, hotspare_no) */
@@ -103 +109 @@
         bool halt_please;
         fibril_mutex_t halt_lock;
+
+        /*
+         * For deferring invalidations of extents. Used when
+         * an extent has to be invalidated (got ENOMEM on a WRITE),
+         * but workers - therefore state callbacks cannot lock
+         * extents for writing (they are readers), so invalidations
+         * are harvested later when we are able to.
+         */
+        fibril_mutex_t deferred_list_lock;
+        list_t deferred_invalidations_list;
+        hr_deferred_invalidation_t deferred_inval[HR_MAX_EXTENTS];
 
         _Atomic uint64_t rebuild_blk;