linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: add compr_inode and compr

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Message-ID: <CACOAw_xJ8yTT+PLjgvE_8M6rfuwLiR42EeCOt5xDm2xTDj2Aeg@mail.gmail.com>
Date:   Wed, 21 Oct 2020 13:55:17 +0900
From:   Daeho Jeong <daeho43@...il.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com,
        Daeho Jeong <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH] f2fs: add compr_inode and compr_blocks sysfs nodes

Both values are from memory values.

2020년 10월 21일 (수) 오후 1:36, Eric Biggers <ebiggers@...nel.org>님이 작성:

>
> On Fri, Oct 16, 2020 at 02:14:55PM +0900, Daeho Jeong wrote:
> > From: Daeho Jeong <daehojeong@...gle.com>
> >
> > Added compr_inode to show compressed inode count and compr_blocks to
> > show compressed block count in sysfs.
> >
> > Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
> > ---
> >  Documentation/ABI/testing/sysfs-fs-f2fs | 10 ++++++++++
> >  fs/f2fs/sysfs.c                         | 17 +++++++++++++++++
> >  2 files changed, 27 insertions(+)
> >
> > diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
> > index 834d0becae6d..a01c26484c69 100644
> > --- a/Documentation/ABI/testing/sysfs-fs-f2fs
> > +++ b/Documentation/ABI/testing/sysfs-fs-f2fs
> > @@ -350,3 +350,13 @@ Date:            April 2020
> >  Contact:     "Daeho Jeong" <daehojeong@...gle.com>
> >  Description: Give a way to change iostat_period time. 3secs by default.
> >               The new iostat trace gives stats gap given the period.
> > +
> > +What:                /sys/fs/f2fs/<disk>/compr_inode
> > +Date:                October 2020
> > +Contact:     "Daeho Jeong" <daehojeong@...gle.com>
> > +Description: Show compressed inode count
> > +
> > +What:                /sys/fs/f2fs/<disk>/compr_blocks
> > +Date:                October 2020
> > +Contact:     "Daeho Jeong" <daehojeong@...gle.com>
> > +Description: Show compressed block count
>
> Is it the count in memory, or on disk?
>
> - Eric