Re: [PATCH 1/2] filemap: Convert generic_perform_write() to support large folios

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On Tue, Jun 11, 2024 at 05:47:12PM +0700, Shaun Tancheff wrote:
>>   	const struct address_space_operations *a_ops = mapping->a_ops;
>> +	size_t chunk = mapping_max_folio_size(mapping);
>
> Better to default chunk to PAGE_SIZE for backward compat
> +       size_t chunk = PAGE_SIZE;
>
>>   	long status = 0;
>>   	ssize_t written = 0;
>>   
>
> Have fs opt in to large folio support:
>
> +       if (mapping_large_folio_support(mapping))
> +               chunk = PAGE_SIZE << MAX_PAGECACHE_ORDER;

I don't think you've actually read the code, have you?





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