Changeset 401b9e42 in mainline for uspace/srv/bd/hr/hr.c

Timestamp:

2025-01-12T21:53:55Z (6 months ago)

Author:

Miroslav Cimerman <mc@…>

Children:

dec4150

Parents:

e2b417f

git-author:

Miroslav Cimerman <mc@…> (2025-01-12 19:18:08)

git-committer:

Miroslav Cimerman <mc@…> (2025-01-12 21:53:55)

Message:

hr: state_changed and peding_invalidation atomic flags

These flags are used to check whether there was a state
change, or if there is a pending invalidation, so that
we can avoid the slow code paths in a lockless fashion.

File:

• uspace/srv/bd/hr/hr.c (modified) (2 diffs)

uspace/srv/bd/hr/hr.c

@@ -264 +264 @@
 
         atomic_init(&new_volume->rebuild_blk, 0);
+        atomic_init(&new_volume->state_changed, false);
+        atomic_init(&new_volume->pending_invalidation, false);
 
         rc = new_volume->hr_ops.create(new_volume);
@@ -320 +322 @@
                 fibril_rwlock_write_lock(&vol->states_lock);
                 fibril_rwlock_read_lock(&vol->extents_lock);
+
+                /* TODO: maybe expose extent state callbacks */
                 hr_update_ext_status(vol, fail_extent, HR_EXT_FAILED);
+                atomic_store(&vol->state_changed, true);
+
                 fibril_rwlock_read_unlock(&vol->extents_lock);
                 fibril_rwlock_write_unlock(&vol->states_lock);