crimson/os/seastore: reset onode in 'SeaStore::repeat_with_onode' before the transaction gets destroyed
Onodes hold references to the onode tree extents. And if it's referencing the root extent, that root
extent is cached in the onode trees root_tracker which caches onode tree roots by transaction address.
Than root_tracker entry only gets removed when the onode(or the corresponding "super") is destroyed.
On the other hand, two non-concurrent transactions can occupy the same address. So if an onode gets destroyed
after its transaction is destroyed, there will be a chance that another transaction occupying the same
address get that not-yet-destroyed and may-be-outdated onode.
BTW, Since we already cache extents in transactions, might want to drop onode tree root_tracker later?
projects / ceph.git / commit