Re: [PATCH] f2fs: provide a way to attach HIPRI for Direct IO

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On 11/9/21 9:39 AM, Christoph Hellwig wrote:
> On Mon, Nov 08, 2021 at 06:13:36PM -0800, Jaegeuk Kim wrote:
>> This patch adds a way to attach HIPRI by expanding the existing sysfs's
>> data_io_flag. User can measure IO performance by enabling it.
> 
> NAK.  This flag should only be used when explicitly specified by
> the submitter of the I/O.

Yes, this cannot be set in the middle for a multitude of reasons. I wonder
if we should add a comment to that effect near the definition of it.

-- 
Jens Axboe




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