linux-kernel - Re: [f2fs-dev] [PATCH v4] f2fs: introduce fragment allocation mode mount option

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Message-ID: <YUkR84sklj0SgosC@google.com>
Date:   Mon, 20 Sep 2021 15:57:55 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <chao@...nel.org>
Cc:     Daeho Jeong <daeho43@...il.com>,
        Daeho Jeong <daehojeong@...gle.com>, kernel-team@...roid.com,
        linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH v4] f2fs: introduce fragment allocation mode
 mount option

On 09/12, Chao Yu wrote:
> On 2021/9/11 7:13, Jaegeuk Kim wrote:
> > Wait. Why do we need to add so many options here? I was expecting to see
> > performance difference when getting random segments or random blocks as
> > an extreme case. I don't get the point why we need the middle of those cases.
> 
> I guess we can simply the aging test procedure of filesystem by changing a bit
> based on this patch.

My question was on "fragment:fixed_block".

> 
> See comments in below thread.
> 
> https://lore.kernel.org/lkml/425daf77-8020-26ce-dc9f-019d9a881b78@kernel.org/
> 
> Thanks,