[PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis

[Christoph Hellwig]

> +void invalidate_bdev_range(struct block_device *bdev, pgoff_t start,
> +			   pgoff_t end)
> +{
> +	invalidate_mapping_pages(bdev->bd_inode->i_mapping, start, end);
> +}
> +EXPORT_SYMBOL_GPL(invalidate_bdev_range);

Can we have kerneldoc comments for the new helpers please?

> +struct folio *__bdev_get_folio(struct block_device *bdev, loff_t pos,
> +			       fgf_t fgp_flags, gfp_t gfp)
> +{
> +	return __filemap_get_folio(bdev->bd_inode->i_mapping, pos >> PAGE_SHIFT,
> +				   fgp_flags, gfp);
> +}
> +EXPORT_SYMBOL_GPL(__bdev_get_folio);

It's a bit silly to have a __-prefixed API without a version that
doesn't have the prefix, so I'd prefer to drop it.  Unless willy has
a good argument for keeping it the same as the filemap API.