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

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Date:   Wed, 13 Dec 2023 09:09:13 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Christoph Hellwig <hch@...radead.org>,
        Yu Kuai <yukuai1@...weicloud.com>
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        "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis

Hi,

在 2023/12/12 21:16, Christoph Hellwig 写道:
>> +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?

Of course, will definitely do this in v3.
> 
>> +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.

Ok, I'll drop it if willy doesn't against this.

Thanks,
Kuai
> 
> .
>