linux-kernel - Re: bcache on XFS: metadata I/O (dirent I/O?) not getting cached at all?

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Message-ID: <875ztveobn.fsf@esperi.org.uk>
Date:   Thu, 07 Feb 2019 13:10:52 +0000
From:   Nix <nix@...eri.org.uk>
To:     Coly Li <colyli@...e.de>
Cc:     Dave Chinner <david@...morbit.com>,
        Andre Noll <maan@...bingen.mpg.de>,
        linux-bcache@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
        axboe@...nel.dk
Subject: Re: bcache on XFS: metadata I/O (dirent I/O?) not getting cached at all?

On 7 Feb 2019, Coly Li stated:
> On 2019/2/7 10:26 上午, Dave Chinner wrote:
>> So, yeah, that needs to be reverted if you want bcache to function
>> properly for metadata caching.
>
> Sure, I will fix this, once I make it clear to me.

I'll give it a test :)

The meaning of these flags was somewhat opaque to me, too (mostly due to
novelty: I've never really looked at anything in the block layer
before).

-- 
NULL && (void)