Re: [PATCH 04/11] fs: add support for allowing applications to pass in write life time hints

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On 06/20/2017 06:47 AM, Christoph Hellwig wrote:
> On Tue, Jun 20, 2017 at 06:45:45AM -0600, Jens Axboe wrote:
>> To the page? Where do you want to find room for that?
> 
> In the page we don't.  In the buffer_head we have plenty (as will
> the replacement for it if I ever get time to get back to that)

That sounds fragile... Is it really worth it to avoid stealing three
bits in the inode? Do we have buffer_heads attached everywhere, that
sounds surprising to me.

-- 
Jens Axboe




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