Re: [PATCH] fs: guard_bio_eod() needs to consider partitions

[Christoph Hellwig]

On Tue, Oct 24, 2017 at 03:16:36AM +0100, Al Viro wrote:
> > Fixes: 74d46992e0d9 ("block: replace bi_bdev with a gendisk pointer and partitions index")
> > Signed-off-by: Greg Edwards <gedwards@xxxxxxx>
> 
> That smells like a nasty source of overhead, especially on SMP boxen...

We could just use __disk_get_part similar to the partition remapping,
or just pass the block_device to guard_bio_eod.