On Wed, 11 Jul 2007 15:05:27 +1000 Neil Brown <neilb@xxxxxxx> wrote: > > It just occurred to me: > > If i_version is 64bit, then knfsd would need to be careful when > reading it on a 32bit host. What are the locking rules? > > Presumably it is only updated under i_mutex protection, but having to > get i_mutex to read it would seem a little heavy handed. > > Should it use a seqlock like i_size? > Could we use the same seqlock that i_size uses, or would we need a > separate one? > seqlocks are a bit of a pain to use (we've had plenty of deadlocks on the i_size one). We could reuse inode.i_lock for this modification. Its mandate is "general purpose innermost lock to protect stuff in this inode". - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
