On Mon, 09 Jul 2018, Manfred Spraul wrote:
The comment that explains ipc_obtain_object_check is wrong:
The function checks the sequence number, not the reference
counter.
Note that checking the reference counter would be meaningless:
The reference counter is decreased without holding any locks,
thus an object with kern_ipc_perm.deleted=true may disappear at
the end of the next rcu grace period.
Signed-off-by: Manfred Spraul <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Reviewed-by: Davidlohr Bueso <[email protected]>
