From: Chao Yu <chao@kernel.org>
To: Sijie Lan <sijielan@gmail.com>,
linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] Is compression available under direct-io mode?
Date: Wed, 17 May 2023 10:32:00 +0800 [thread overview]
Message-ID: <ed4926d1-aba5-0234-7345-cc3290e8cc54@kernel.org> (raw)
In-Reply-To: <CAGAHmYC8AR_iw=nXQc6s29T3SkSoz9Ajd0N39Nv87orJJHMLGQ@mail.gmail.com>
On 2023/5/12 9:10, Sijie Lan wrote:
> Hi, guys,
>
> When I do some specific test scenarios, I want to do some direct write
> after data have been compressed in F2FS, but when I track the internal
> functions, it seems F2FS forces my direct-io request to buffer-io
> mode. Does it mean we can not do the write direct-io if we applied the
Yes, compression feature depends on page cache.
Thanks,
> compression feature? In other words, must f2fs use an inside buffer to
> provide compression functions?
>
>
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
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prev parent reply other threads:[~2023-05-17 2:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-12 1:10 [f2fs-dev] Is compression available under direct-io mode? Sijie Lan
2023-05-17 2:32 ` Chao Yu [this message]
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