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Linux: disable lockdep for a couple of locks 

When running a debug kernel with lockdep enabled there
are several locks which report false positives.  Set
MUTEX_NOLOCKDEP/RW_NOLOCKDEP to disable these warnings.

Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #16188
This commit is contained in:
Brian Behlendorf 2024-05-13 17:12:07 -05:00 committed by GitHub
parent 136c053211
commit abec7dcd30
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GPG Key ID: B5690EEEBB952194
2 changed files with 4 additions and 4 deletions
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2
module/os/linux/spl/spl-procfs-list.c
View File

@ -234,7 +234,7 @@ procfs_list_install(const char *module,
modulestr = kmem_asprintf("%s/%s", module, submodule);
else
modulestr = kmem_asprintf("%s", module);
mutex_init(&procfs_list->pl_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&procfs_list->pl_lock, NULL, MUTEX_NOLOCKDEP, NULL);
list_create(&procfs_list->pl_list,
procfs_list_node_off + sizeof (procfs_list_node_t),
procfs_list_node_off + offsetof(procfs_list_node_t, pln_link));

6
module/zfs/dbuf.c
View File

@ -292,8 +292,8 @@ dbuf_cons(void *vdb, void *unused, int kmflag)
dmu_buf_impl_t *db = vdb;
memset(db, 0, sizeof (dmu_buf_impl_t));
mutex_init(&db->db_mtx, NULL, MUTEX_DEFAULT, NULL);
rw_init(&db->db_rwlock, NULL, RW_DEFAULT, NULL);
mutex_init(&db->db_mtx, NULL, MUTEX_NOLOCKDEP, NULL);
rw_init(&db->db_rwlock, NULL, RW_NOLOCKDEP, NULL);
cv_init(&db->db_changed, NULL, CV_DEFAULT, NULL);
multilist_link_init(&db->db_cache_link);
zfs_refcount_create(&db->db_holds);
@ -958,7 +958,7 @@ dbuf_init(void)
0, dbuf_cons, dbuf_dest, NULL, NULL, NULL, 0);
for (int i = 0; i < hmsize; i++)
mutex_init(&h->hash_mutexes[i], NULL, MUTEX_DEFAULT, NULL);
mutex_init(&h->hash_mutexes[i], NULL, MUTEX_NOLOCKDEP, NULL);
dbuf_stats_init(h);