Jarek Poplawski wrote:
If you are sure there is no circular locking possible
between these two functions and this entry->lock here
isn't endangered by other functions, you could try to
make lockdep "silent" like this:
write_lock_bh(&ref_table_lock);
if (tipc_ref_table.first_free) {
index = tipc_ref_table.first_free;
entry = &(tipc_ref_table.entries[index]);
index_mask = tipc_ref_table.index_mask;
/* take lock in case a previous user of entry still holds it */
- spin_lock_bh(&entry->lock, );
+ local_bh_disable();
+ spin_lock_nested(&entry->lock, SINGLE_DEPTH_NESTING);
next_plus_upper = entry->data.next_plus_upper;
tipc_ref_table.first_free = next_plus_upper & index_mask;
reference = (next_plus_upper & ~index_mask) + index;
entry->data.reference = reference;
entry->object = object;
if (lock != 0)
*lock = &entry->lock;
/* may stay as is or: */
- spin_unlock_bh(&entry->lock);
+ spin_unlock(&entry->lock);
+ local_bh_enable();
}
write_unlock_bh(&ref_table_lock);
Looks like an acceptable solution. I will try this.
Thanks
///Jon
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