linux-ext4 - Re: [PATCH] ext4: add hot tracking support

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Message-ID: <20121029023244.GA5319@gmail.com>
Date:	Mon, 29 Oct 2012 10:32:44 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	Zhi Yong Wu <zwu.kernel@...il.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	cmm@...ibm.com, wuzhy@...ux.vnet.ibm.com,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: [PATCH] ext4: add hot tracking support

On Sun, Oct 28, 2012 at 09:45:49PM +0800, Zhi Yong Wu wrote:
[snip]
> On Sun, Oct 28, 2012 at 5:22 PM, Zheng Liu <gnehzuil.liu@...il.com> wrote:
> > @@ -864,6 +865,8 @@ static void ext4_put_super(struct super_block *sb)
> >         ext4_ext_release(sb);
> >         ext4_xattr_put_super(sb);
> >
> > +       if (sbi->s_hottrack_enable)
> > +               hot_track_exit(sb);
> >         if (!(sb->s_flags & MS_RDONLY)) {
> >                 EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
> >                 es->s_state = cpu_to_le16(sbi->s_mount_state);
> HI, Zheng,
> 
> Do you not need to free stuff related to hot tracking when umount?

I call hot_track_exit() in put_super callback function.  I have no idea
that there still has some other functions that need to be called.  Am I
missing something?

Regards,
Zheng
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