Re: [PATCH v4 1/2] iomap: fix zero padding data issue in concurrent append writes

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On Sun, Nov 24, 2024 at 10:40:20PM -0800, Christoph Hellwig wrote:
> On Mon, Nov 25, 2024 at 10:33:40AM +0800, Long Li wrote:
> >   1. collect reviewed tag
> >   2. Modify the comment of io_size and iomap_ioend_size_aligned().
> >   3. Add explain of iomap_ioend_size_aligned() to commit message.
> 
> Just curious, did you look into Brian's suggestions to do away
> with the rounding up entirely as there is not much practical benefit
> in merging behind EOF?
> 
> 

I agree with Brian's point. The scenarios where rounding up io_size
enables ioend merging are quite rare, so the practical benefits are
limited, though such cases can still exist. Therefore, I think both
approaches are acceptable as there doesn't seem to be a significant
difference between them. 

Thanks,
Long Li




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