Unpin an object in the cache tier
After an object is unpinned in the cache tier, it can be flushed out
@param io the pool the object is in @param o the object id @returns 0 on success, negative error code on failure
See Implementation
Unpin an object in the cache tier
After an object is unpinned in the cache tier, it can be flushed out
@param io the pool the object is in @param o the object id @returns 0 on success, negative error code on failure