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Message-ID: <20161123013637.GA14761@jaegeuk>
Date: Tue, 22 Nov 2016 17:36:38 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Chao Yu <yuchao0@...wei.com>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH 1/3] f2fs: count dirty inodes to flush node pages during
checkpoint
On Wed, Nov 23, 2016 at 09:27:26AM +0800, Chao Yu wrote:
> On 2016/10/18 5:56, Jaegeuk Kim wrote:
> > If there are a lot of dirty inodes, we need to flush all of them when doing
> > checkpoint. So, we need to count this for enough free space.
> >
> > Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> > ---
> > fs/f2fs/segment.h | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
> > index fecb856..a6efb5c 100644
> > --- a/fs/f2fs/segment.h
> > +++ b/fs/f2fs/segment.h
> > @@ -471,11 +471,12 @@ static inline bool need_SSR(struct f2fs_sb_info *sbi)
> > {
> > int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
> > int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
> > + int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
> >
> > if (test_opt(sbi, LFS))
> > return false;
> >
> > - return free_sections(sbi) <= (node_secs + 2 * dent_secs +
> > + return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
> > reserved_sections(sbi) + 1);
> > }
> >
> > @@ -484,6 +485,7 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
> > {
> > int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
> > int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
> > + int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
> >
> > node_secs += get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
>
> This line should be removed if we start to count dirty meta with imeta_secs from
> now on.
Ah, yes.
Fixed.
Thanks,
>
> Thanks,
>
> >
> > @@ -491,7 +493,8 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
> > return false;
> >
> > return (free_sections(sbi) + freed) <=
> > - (node_secs + 2 * dent_secs + reserved_sections(sbi) + needed);
> > + (node_secs + 2 * dent_secs + imeta_secs +
> > + reserved_sections(sbi) + needed);
> > }
> >
> > static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi)
> >
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