On Sat, Dec 11, 2010 at 7:30 PM, Jeff Layton <jlayton@xxxxxxxxx> wrote: >> >> Will look into this. One thing that concerns me is if a cached etnry >> for a SID with its name and an id (either an uid or a gid), if that SID >> now represents a different object and has differernt name, would >> not cached info be incorrect? Not sure if this can ever happen >> or how would it happen and if it does, what would be a trigger >> for a cache revalidation and purges! >> > > Sure, mappings can change. But, you still have the same problem with > what you're proposing in these patches. The userspace program isn't > setting a timeout on the key. Once a mapping is put in the keyring, > it's there until it's revoked. You probably want to set a max TTL for > the entries in the cache regardless of what scheme is used. I was under the impression that SIDs are never reused. Perhaps I am mistaken. -- Regards, Richard Sharpe -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
