Re: [PATCH] btrfs: convert data_seqcount to seqcount_mutex_t

[David Sterba]

On Wed, Oct 21, 2020 at 01:17:24PM -0700, Davidlohr Bueso wrote:
> By doing so we can associate the sequence counter to the chunk_mutex
> for lockdep purposes (compiled-out otherwise) and also avoid
> explicitly disabling preemption around the write region as it will now
> be done automatically by the seqcount machinery based on the lock type.

Thanks, the enhanced seqlock is new to me and makes sense regarding
lockdep. I've added a comment to mention the mutex association and added
it to misc-next.