Also update dm_early_create() to take _hash_lock when calling both __get_name_cell and __hash_remove -- given dm_early_create()'s early boot usecase this locking isn't about correctness but it allows lockdep_assert_held() to be added to __hash_remove. Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> --- drivers/md/dm-ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index f34d36a4b4a1..067dfc08d4c3 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -310,6 +310,8 @@ static struct dm_table *__hash_remove(struct hash_cell *hc) struct dm_table *table; int srcu_idx; + lockdep_assert_held(&_hash_lock); + /* remove from the dev trees */ __unlink_name(hc); __unlink_uuid(hc); @@ -2263,7 +2265,9 @@ int __init dm_early_create(struct dm_ioctl *dmi, err_destroy_table: dm_table_destroy(t); err_hash_remove: + down_write(&_hash_lock); (void) __hash_remove(__get_name_cell(dmi->name)); + up_write(&_hash_lock); /* release reference from __get_name_cell */ dm_put(md); err_destroy_dm: -- 2.37.0 (Apple Git-136) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
