From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Chao Yu <yuchao0@huawei.com>
Cc: linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com
Subject: Re: [f2fs-dev] [PATCH] f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA
Date: Mon, 6 Apr 2020 19:59:13 -0700 [thread overview]
Message-ID: <20200407025913.GB137081@google.com> (raw)
In-Reply-To: <0e627c29-7fb0-5bd6-c1d9-b96a94df62ae@huawei.com>
On 04/07, Chao Yu wrote:
> On 2020/4/4 0:12, Jaegeuk Kim wrote:
> > This patch introduces a way to attach REQ_META/FUA explicitly
> > to all the data writes given temperature.
> >
> > -> attach REQ_FUA to Hot Data writes
> >
> > -> attach REQ_FUA to Hot|Warm Data writes
> >
> > -> attach REQ_FUA to Hot|Warm|Cold Data writes
> >
> > -> attach REQ_FUA to Hot|Warm|Cold Data writes as well as
> > REQ_META to Hot Data writes
>
> Out of curiosity, what scenario it is used for?
It's testing purpose to compare the bandwidths per different IO flags.
>
> Thanks,
next prev parent reply other threads:[~2020-04-07 2:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-03 16:12 [PATCH] f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA Jaegeuk Kim
2020-04-07 2:16 ` [f2fs-dev] " Chao Yu
2020-04-07 2:59 ` Jaegeuk Kim [this message]
2020-04-07 3:40 ` Chao Yu
2020-04-09 2:20 ` Jaegeuk Kim
2020-04-09 2:23 ` Chao Yu
2020-04-09 2:28 ` Jaegeuk Kim
2020-04-09 2:31 ` Chao Yu
2020-04-16 7:18 ` Chao Yu
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