Re: [PATCH v3 1/6] block: add disk sequence number

[Christoph Hellwig]

On Wed, Jun 23, 2021 at 12:58:53PM +0200, Matteo Croce wrote:
> +void inc_diskseq(struct gendisk *disk)
> +{
> +	static atomic64_t diskseq;

Please don't hide file scope variables in functions.

Can you explain a little more why we need a global sequence count vs
a per-disk one here?