From: Vyacheslav Dubeyko <slava@dubeyko.com>
To: Jooyoung Hwang <jooyoung.hwang@samsung.com>
Cc: "'Marco Stornelli'" <marco.stornelli@gmail.com>,
"'Jaegeuk Kim'" <jaegeuk.kim@gmail.com>,
"'Al Viro'" <viro@zeniv.linux.org.uk>,
tytso@mit.edu, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, chur.lee@samsung.com,
cm224.lee@samsung.com, linux-fsdevel@vger.kernel.org
Subject: RE: [PATCH 00/16] f2fs: introduce flash-friendly file system
Date: Wed, 10 Oct 2012 12:05:33 +0400 [thread overview]
Message-ID: <1349856333.1889.92.camel@slavad-ubuntu> (raw)
In-Reply-To: <1349812406.18456.41.camel@adg-desktop-09.cs.wisc.edu>
On Tue, 2012-10-09 at 14:53 -0500, Jooyoung Hwang wrote:
> On Tue, 2012-10-09 at 16:08 +0900, Jaegeuk Kim wrote:
> > > -----Original Message-----
> > > From: Vyacheslav Dubeyko [mailto:slava@dubeyko.com]
> > > Sent: Tuesday, October 09, 2012 4:23 AM
> > > To: Jaegeuk Kim
> > > Cc: 'Marco Stornelli'; 'Jaegeuk Kim'; 'Al Viro'; tytso@mit.edu; gregkh@linuxfoundation.org; linux-
> > > kernel@vger.kernel.org; chur.lee@samsung.com; cm224.lee@samsung.com; jooyoung.hwang@samsung.com;
> > > linux-fsdevel@vger.kernel.org
> > > Subject: Re: [PATCH 00/16] f2fs: introduce flash-friendly file system
>
> I'd like you to refer to the following link as well which is about
> mobile workload pattern.
> http://www.cs.cmu.edu/~fuyaoz/courses/15712/report.pdf
> It's reported that in Android there are frequent issues of fsync and
> most of them are only for small size of data.
>
> To provide efficient fsync, F2FS minimizes the amount of metadata
> written to serve a fsync. Fsync in F2FS is completed by writing user
> data blocks and direct node blocks which point to them rather than
> creating a new checkpoint which would incur more I/O loads.
> If sudden power failure happens, then F2FS recovery routine rolls back
> to the latest checkpoint and thereafter recovers file system state to
> reflect all the completed fsync operations, which we call roll-forward
> recovery.
> You may want to look at the code about the roll-forward in recover_fsync_data().
>
Thank you.
With the best regards,
Vyacheslav Dubeyko.
> --
> Jooyoung Hwang
> Samsung Electronics
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
next prev parent reply other threads:[~2012-10-10 8:05 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <415E76CC-A53D-4643-88AB-3D7D7DC56F98@dubeyko.com>
2012-10-06 13:54 ` Vyacheslav Dubeyko
2012-10-06 20:06 ` Jaegeuk Kim
2012-10-07 7:09 ` Marco Stornelli
2012-10-07 9:31 ` Jaegeuk Kim
2012-10-07 12:08 ` Vyacheslav Dubeyko
2012-10-08 8:25 ` Jaegeuk Kim
2012-10-08 9:59 ` Namjae Jeon
2012-10-08 10:52 ` Jaegeuk Kim
2012-10-08 11:21 ` Namjae Jeon
2012-10-08 12:11 ` Jaegeuk Kim
2012-10-09 3:52 ` Namjae Jeon
2012-10-09 8:00 ` Jaegeuk Kim
2012-10-09 8:31 ` Lukáš Czerner
2012-10-09 10:45 ` Jaegeuk Kim
2012-10-09 11:01 ` Lukáš Czerner
2012-10-09 12:01 ` Jaegeuk Kim
2012-10-09 12:39 ` Lukáš Czerner
2012-10-09 13:10 ` Jaegeuk Kim
2012-10-09 21:20 ` Dave Chinner
2012-10-10 2:32 ` Jaegeuk Kim
2012-10-10 4:53 ` Theodore Ts'o
2012-10-12 20:55 ` Arnd Bergmann
2012-10-10 10:36 ` David Woodhouse
2012-10-12 20:58 ` Arnd Bergmann
2012-10-13 4:26 ` Namjae Jeon
2012-10-13 12:37 ` Jaegeuk Kim
2012-10-17 11:12 ` Namjae Jeon
[not found] ` <000001cdacef$b2f6eaa0$18e4bfe0$%kim@samsung.com>
2012-10-18 13:39 ` Vyacheslav Dubeyko
2012-10-18 22:14 ` Jaegeuk Kim
2012-10-19 9:20 ` NeilBrown
2012-10-08 19:22 ` Vyacheslav Dubeyko
2012-10-09 7:08 ` Jaegeuk Kim
2012-10-09 19:53 ` Jooyoung Hwang
2012-10-10 8:05 ` Vyacheslav Dubeyko [this message]
2012-10-10 9:02 ` Theodore Ts'o
2012-10-10 11:52 ` SQLite on flash (was: [PATCH 00/16] f2fs: introduce flash-friendly file system) Clemens Ladisch
2012-10-10 7:57 ` [PATCH 00/16] f2fs: introduce flash-friendly file system Vyacheslav Dubeyko
2012-10-10 9:43 ` Jaegeuk Kim
2012-10-11 3:14 ` Namjae Jeon
[not found] ` <CAN863PuyMkSZtZCvqX+kwei9v=rnbBYVYr3TqBXF_6uxwJe2_Q@mail.gmail.com>
2012-10-17 11:13 ` Namjae Jeon
2012-10-17 23:06 ` Changman Lee
2012-10-12 12:30 ` Vyacheslav Dubeyko
2012-10-12 14:25 ` Jaegeuk Kim
2012-10-07 10:15 ` Vyacheslav Dubeyko
2012-10-05 11:55 김재극
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