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[PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data

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  [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data Jaegeuk Kim <jaegeuk@kernel.org> - 2016-01-25 23:10 +0100
    RE: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due  to inline_data Chao Yu <chao2.yu@samsung.com> - 2016-01-26 06:50 +0100
      Re: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due  to inline_data Jaegeuk Kim <jaegeuk@kernel.org> - 2016-01-26 19:50 +0100
        RE: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due  to inline_data Chao Yu <chao2.yu@samsung.com> - 2016-01-27 07:30 +0100

#1317339 — [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data

The sceanrio is:
1. create fully node blocks
2. flush node blocks
3. write inline_data for all the node blocks again
4. flush node blocks redundantly

So, this patch tries to flush inline_data when flushing node blocks.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/data.c   |  1 +
 fs/f2fs/inline.c |  2 ++
 fs/f2fs/node.c   | 39 +++++++++++++++++++++++++++++++++++++++
 fs/f2fs/node.h   | 15 +++++++++++++++
 4 files changed, 57 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 89a37ba..260c0eb 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1463,6 +1463,7 @@ restart:
 		if (pos + len <= MAX_INLINE_DATA) {
 			read_inline_data(page, ipage);
 			set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
+			set_inline_node(ipage);
 			sync_inode_page(&dn);
 		} else {
 			err = f2fs_convert_inline_page(&dn, page);
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 8df13e5..fc4d298 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -159,6 +159,7 @@ no_update:
 
 	/* clear inline data and flag after data writeback */
 	truncate_inline_inode(dn->inode_page, 0);
+	clear_inline_node(dn->inode_page);
 clear_out:
 	stat_dec_inline_inode(dn->inode);
 	f2fs_clear_inline_inode(dn->inode);
@@ -233,6 +234,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
 	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
 
 	sync_inode_page(&dn);
+	clear_inline_node(dn.inode_page);
 	f2fs_put_dnode(&dn);
 	return 0;
 }
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 23b800d..94a6755 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1154,6 +1154,37 @@ void sync_inode_page(struct dnode_of_data *dn)
 	dn->node_changed = ret ? true: false;
 }
 
+static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
+{
+	struct inode *inode;
+	struct page *page;
+
+	/* should flush inline_data before evict_inode */
+	inode = ilookup(sbi->sb, ino);
+	if (!inode)
+		return;
+
+	page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
+	if (!page)
+		goto iput_out;
+
+	if (!PageUptodate(page))
+		goto page_out;
+
+	if (!PageDirty(page))
+		goto page_out;
+
+	if (!clear_page_dirty_for_io(page))
+		goto page_out;
+
+	if (!f2fs_write_inline_data(inode, page))
+		inode_dec_dirty_pages(inode);
+page_out:
+	f2fs_put_page(page, 1);
+iput_out:
+	iput(inode);
+}
+
 int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
 					struct writeback_control *wbc)
 {
@@ -1221,6 +1252,14 @@ continue_unlock:
 				goto continue_unlock;
 			}
 
+			/* flush inline_data */
+			if (!ino && is_inline_node(page)) {
+				clear_inline_node(page);
+				unlock_page(page);
+				flush_inline_data(sbi, ino_of_node(page));
+				continue;
+			}
+
 			if (!clear_page_dirty_for_io(page))
 				goto continue_unlock;
 
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index 23bd992..1f4f9d4 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -379,6 +379,21 @@ static inline int is_node(struct page *page, int type)
 #define is_fsync_dnode(page)	is_node(page, FSYNC_BIT_SHIFT)
 #define is_dent_dnode(page)	is_node(page, DENT_BIT_SHIFT)
 
+static inline int is_inline_node(struct page *page)
+{
+	return PageChecked(page);
+}
+
+static inline void set_inline_node(struct page *page)
+{
+	SetPageChecked(page);
+}
+
+static inline void clear_inline_node(struct page *page)
+{
+	ClearPageChecked(page);
+}
+
 static inline void set_cold_node(struct inode *inode, struct page *page)
 {
 	struct f2fs_node *rn = F2FS_NODE(page);
-- 
2.6.3

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#1317546 — RE: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data

Hi Jaegeuk,

> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk@kernel.org]
> Sent: Tuesday, January 26, 2016 6:05 AM
> To: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org;
> linux-f2fs-devel@lists.sourceforge.net
> Cc: Jaegeuk Kim
> Subject: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data
> 
> The sceanrio is:
> 1. create fully node blocks
> 2. flush node blocks
> 3. write inline_data for all the node blocks again
> 4. flush node blocks redundantly
> 
> So, this patch tries to flush inline_data when flushing node blocks.
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/data.c   |  1 +
>  fs/f2fs/inline.c |  2 ++
>  fs/f2fs/node.c   | 39 +++++++++++++++++++++++++++++++++++++++
>  fs/f2fs/node.h   | 15 +++++++++++++++
>  4 files changed, 57 insertions(+)
> 
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 89a37ba..260c0eb 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -1463,6 +1463,7 @@ restart:
>  		if (pos + len <= MAX_INLINE_DATA) {
>  			read_inline_data(page, ipage);
>  			set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> +			set_inline_node(ipage);
>  			sync_inode_page(&dn);
>  		} else {
>  			err = f2fs_convert_inline_page(&dn, page);
> diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
> index 8df13e5..fc4d298 100644
> --- a/fs/f2fs/inline.c
> +++ b/fs/f2fs/inline.c
> @@ -159,6 +159,7 @@ no_update:
> 
>  	/* clear inline data and flag after data writeback */
>  	truncate_inline_inode(dn->inode_page, 0);
> +	clear_inline_node(dn->inode_page);
>  clear_out:
>  	stat_dec_inline_inode(dn->inode);
>  	f2fs_clear_inline_inode(dn->inode);
> @@ -233,6 +234,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
>  	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> 
>  	sync_inode_page(&dn);
> +	clear_inline_node(dn.inode_page);
>  	f2fs_put_dnode(&dn);
>  	return 0;
>  }
> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> index 23b800d..94a6755 100644
> --- a/fs/f2fs/node.c
> +++ b/fs/f2fs/node.c
> @@ -1154,6 +1154,37 @@ void sync_inode_page(struct dnode_of_data *dn)
>  	dn->node_changed = ret ? true: false;
>  }
> 
> +static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
> +{
> +	struct inode *inode;
> +	struct page *page;
> +
> +	/* should flush inline_data before evict_inode */
> +	inode = ilookup(sbi->sb, ino);
> +	if (!inode)
> +		return;
> +
> +	page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
> +	if (!page)
> +		goto iput_out;
> +
> +	if (!PageUptodate(page))
> +		goto page_out;
> +
> +	if (!PageDirty(page))
> +		goto page_out;
> +
> +	if (!clear_page_dirty_for_io(page))
> +		goto page_out;
> +
> +	if (!f2fs_write_inline_data(inode, page))

better to redirty the page when fail except -EAGAIN?

> +		inode_dec_dirty_pages(inode);
> +page_out:
> +	f2fs_put_page(page, 1);
> +iput_out:
> +	iput(inode);
> +}
> +
>  int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
>  					struct writeback_control *wbc)
>  {
> @@ -1221,6 +1252,14 @@ continue_unlock:
>  				goto continue_unlock;
>  			}
> 
> +			/* flush inline_data */
> +			if (!ino && is_inline_node(page)) {
> +				clear_inline_node(page);

Should clear after flushed inline data? otherwise if we failed to flush
inline data, we will lose the change to flush it before node flush.

Thanks,

> +				unlock_page(page);
> +				flush_inline_data(sbi, ino_of_node(page));
> +				continue;
> +			}
> +
>  			if (!clear_page_dirty_for_io(page))
>  				goto continue_unlock;
> 
> diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
> index 23bd992..1f4f9d4 100644
> --- a/fs/f2fs/node.h
> +++ b/fs/f2fs/node.h
> @@ -379,6 +379,21 @@ static inline int is_node(struct page *page, int type)
>  #define is_fsync_dnode(page)	is_node(page, FSYNC_BIT_SHIFT)
>  #define is_dent_dnode(page)	is_node(page, DENT_BIT_SHIFT)
> 
> +static inline int is_inline_node(struct page *page)
> +{
> +	return PageChecked(page);
> +}
> +
> +static inline void set_inline_node(struct page *page)
> +{
> +	SetPageChecked(page);
> +}
> +
> +static inline void clear_inline_node(struct page *page)
> +{
> +	ClearPageChecked(page);
> +}
> +
>  static inline void set_cold_node(struct inode *inode, struct page *page)
>  {
>  	struct f2fs_node *rn = F2FS_NODE(page);
> --
> 2.6.3
> 
> 
> ------------------------------------------------------------------------------
> Site24x7 APM Insight: Get Deep Visibility into Application Performance
> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> Monitor end-to-end web transactions and take corrective actions now
> Troubleshoot faster and improve end-user experience. Signup Now!
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> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

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#1318248 — Re: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data

Hi Chao,

On Tue, Jan 26, 2016 at 01:41:05PM +0800, Chao Yu wrote:
> Hi Jaegeuk,
> 
> > -----Original Message-----
> > From: Jaegeuk Kim [mailto:jaegeuk@kernel.org]
> > Sent: Tuesday, January 26, 2016 6:05 AM
> > To: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org;
> > linux-f2fs-devel@lists.sourceforge.net
> > Cc: Jaegeuk Kim
> > Subject: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data
> > 
> > The sceanrio is:
> > 1. create fully node blocks
> > 2. flush node blocks
> > 3. write inline_data for all the node blocks again
> > 4. flush node blocks redundantly
> > 
> > So, this patch tries to flush inline_data when flushing node blocks.
> > 
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> >  fs/f2fs/data.c   |  1 +
> >  fs/f2fs/inline.c |  2 ++
> >  fs/f2fs/node.c   | 39 +++++++++++++++++++++++++++++++++++++++
> >  fs/f2fs/node.h   | 15 +++++++++++++++
> >  4 files changed, 57 insertions(+)
> > 
> > diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> > index 89a37ba..260c0eb 100644
> > --- a/fs/f2fs/data.c
> > +++ b/fs/f2fs/data.c
> > @@ -1463,6 +1463,7 @@ restart:
> >  		if (pos + len <= MAX_INLINE_DATA) {
> >  			read_inline_data(page, ipage);
> >  			set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> > +			set_inline_node(ipage);
> >  			sync_inode_page(&dn);
> >  		} else {
> >  			err = f2fs_convert_inline_page(&dn, page);
> > diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
> > index 8df13e5..fc4d298 100644
> > --- a/fs/f2fs/inline.c
> > +++ b/fs/f2fs/inline.c
> > @@ -159,6 +159,7 @@ no_update:
> > 
> >  	/* clear inline data and flag after data writeback */
> >  	truncate_inline_inode(dn->inode_page, 0);
> > +	clear_inline_node(dn->inode_page);
> >  clear_out:
> >  	stat_dec_inline_inode(dn->inode);
> >  	f2fs_clear_inline_inode(dn->inode);
> > @@ -233,6 +234,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
> >  	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> > 
> >  	sync_inode_page(&dn);
> > +	clear_inline_node(dn.inode_page);
> >  	f2fs_put_dnode(&dn);
> >  	return 0;
> >  }
> > diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> > index 23b800d..94a6755 100644
> > --- a/fs/f2fs/node.c
> > +++ b/fs/f2fs/node.c
> > @@ -1154,6 +1154,37 @@ void sync_inode_page(struct dnode_of_data *dn)
> >  	dn->node_changed = ret ? true: false;
> >  }
> > 
> > +static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
> > +{
> > +	struct inode *inode;
> > +	struct page *page;
> > +
> > +	/* should flush inline_data before evict_inode */
> > +	inode = ilookup(sbi->sb, ino);
> > +	if (!inode)
> > +		return;
> > +
> > +	page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
> > +	if (!page)
> > +		goto iput_out;
> > +
> > +	if (!PageUptodate(page))
> > +		goto page_out;
> > +
> > +	if (!PageDirty(page))
> > +		goto page_out;
> > +
> > +	if (!clear_page_dirty_for_io(page))
> > +		goto page_out;
> > +
> > +	if (!f2fs_write_inline_data(inode, page))
> 
> better to redirty the page when fail except -EAGAIN?

Agreed.

> 
> > +		inode_dec_dirty_pages(inode);
> > +page_out:
> > +	f2fs_put_page(page, 1);
> > +iput_out:
> > +	iput(inode);
> > +}
> > +
> >  int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
> >  					struct writeback_control *wbc)
> >  {
> > @@ -1221,6 +1252,14 @@ continue_unlock:
> >  				goto continue_unlock;
> >  			}
> > 
> > +			/* flush inline_data */
> > +			if (!ino && is_inline_node(page)) {
> > +				clear_inline_node(page);
> 
> Should clear after flushed inline data? otherwise if we failed to flush
> inline data, we will lose the change to flush it before node flush.

My intention was just letting it go and flush by ->writepage later.
So, the above set_page_dirty() would handle this, right?

Thanks,

> 
> Thanks,
> 
> > +				unlock_page(page);
> > +				flush_inline_data(sbi, ino_of_node(page));
> > +				continue;
> > +			}
> > +
> >  			if (!clear_page_dirty_for_io(page))
> >  				goto continue_unlock;
> > 
> > diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
> > index 23bd992..1f4f9d4 100644
> > --- a/fs/f2fs/node.h
> > +++ b/fs/f2fs/node.h
> > @@ -379,6 +379,21 @@ static inline int is_node(struct page *page, int type)
> >  #define is_fsync_dnode(page)	is_node(page, FSYNC_BIT_SHIFT)
> >  #define is_dent_dnode(page)	is_node(page, DENT_BIT_SHIFT)
> > 
> > +static inline int is_inline_node(struct page *page)
> > +{
> > +	return PageChecked(page);
> > +}
> > +
> > +static inline void set_inline_node(struct page *page)
> > +{
> > +	SetPageChecked(page);
> > +}
> > +
> > +static inline void clear_inline_node(struct page *page)
> > +{
> > +	ClearPageChecked(page);
> > +}
> > +
> >  static inline void set_cold_node(struct inode *inode, struct page *page)
> >  {
> >  	struct f2fs_node *rn = F2FS_NODE(page);
> > --
> > 2.6.3
> > 
> > 
> > ------------------------------------------------------------------------------
> > Site24x7 APM Insight: Get Deep Visibility into Application Performance
> > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> > Monitor end-to-end web transactions and take corrective actions now
> > Troubleshoot faster and improve end-user experience. Signup Now!
> > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
> > _______________________________________________
> > Linux-f2fs-devel mailing list
> > Linux-f2fs-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

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#1318696 — RE: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data

Hi Jaegeuk,

> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk@kernel.org]
> Sent: Wednesday, January 27, 2016 2:48 AM
> To: Chao Yu
> Cc: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org;
> linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data
> 
> Hi Chao,
> 
> On Tue, Jan 26, 2016 at 01:41:05PM +0800, Chao Yu wrote:
> > Hi Jaegeuk,
> >
> > > -----Original Message-----
> > > From: Jaegeuk Kim [mailto:jaegeuk@kernel.org]
> > > Sent: Tuesday, January 26, 2016 6:05 AM
> > > To: linux-kernel@vger.kernel.org; linux-fsdevel@vger.kernel.org;
> > > linux-f2fs-devel@lists.sourceforge.net
> > > Cc: Jaegeuk Kim
> > > Subject: [f2fs-dev] [PATCH 4/6] f2fs: avoid multiple node page writes due to inline_data
> > >
> > > The sceanrio is:
> > > 1. create fully node blocks
> > > 2. flush node blocks
> > > 3. write inline_data for all the node blocks again
> > > 4. flush node blocks redundantly
> > >
> > > So, this patch tries to flush inline_data when flushing node blocks.
> > >
> > > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > > ---
> > >  fs/f2fs/data.c   |  1 +
> > >  fs/f2fs/inline.c |  2 ++
> > >  fs/f2fs/node.c   | 39 +++++++++++++++++++++++++++++++++++++++
> > >  fs/f2fs/node.h   | 15 +++++++++++++++
> > >  4 files changed, 57 insertions(+)
> > >
> > > diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> > > index 89a37ba..260c0eb 100644
> > > --- a/fs/f2fs/data.c
> > > +++ b/fs/f2fs/data.c
> > > @@ -1463,6 +1463,7 @@ restart:
> > >  		if (pos + len <= MAX_INLINE_DATA) {
> > >  			read_inline_data(page, ipage);
> > >  			set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> > > +			set_inline_node(ipage);
> > >  			sync_inode_page(&dn);
> > >  		} else {
> > >  			err = f2fs_convert_inline_page(&dn, page);
> > > diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
> > > index 8df13e5..fc4d298 100644
> > > --- a/fs/f2fs/inline.c
> > > +++ b/fs/f2fs/inline.c
> > > @@ -159,6 +159,7 @@ no_update:
> > >
> > >  	/* clear inline data and flag after data writeback */
> > >  	truncate_inline_inode(dn->inode_page, 0);
> > > +	clear_inline_node(dn->inode_page);
> > >  clear_out:
> > >  	stat_dec_inline_inode(dn->inode);
> > >  	f2fs_clear_inline_inode(dn->inode);
> > > @@ -233,6 +234,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
> > >  	set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
> > >
> > >  	sync_inode_page(&dn);
> > > +	clear_inline_node(dn.inode_page);
> > >  	f2fs_put_dnode(&dn);
> > >  	return 0;
> > >  }
> > > diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> > > index 23b800d..94a6755 100644
> > > --- a/fs/f2fs/node.c
> > > +++ b/fs/f2fs/node.c
> > > @@ -1154,6 +1154,37 @@ void sync_inode_page(struct dnode_of_data *dn)
> > >  	dn->node_changed = ret ? true: false;
> > >  }
> > >
> > > +static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
> > > +{
> > > +	struct inode *inode;
> > > +	struct page *page;
> > > +
> > > +	/* should flush inline_data before evict_inode */
> > > +	inode = ilookup(sbi->sb, ino);
> > > +	if (!inode)
> > > +		return;
> > > +
> > > +	page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
> > > +	if (!page)
> > > +		goto iput_out;
> > > +
> > > +	if (!PageUptodate(page))
> > > +		goto page_out;
> > > +
> > > +	if (!PageDirty(page))
> > > +		goto page_out;
> > > +
> > > +	if (!clear_page_dirty_for_io(page))
> > > +		goto page_out;
> > > +
> > > +	if (!f2fs_write_inline_data(inode, page))
> >
> > better to redirty the page when fail except -EAGAIN?
> 
> Agreed.
> 
> >
> > > +		inode_dec_dirty_pages(inode);
> > > +page_out:
> > > +	f2fs_put_page(page, 1);
> > > +iput_out:
> > > +	iput(inode);
> > > +}
> > > +
> > >  int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino,
> > >  					struct writeback_control *wbc)
> > >  {
> > > @@ -1221,6 +1252,14 @@ continue_unlock:
> > >  				goto continue_unlock;
> > >  			}
> > >
> > > +			/* flush inline_data */
> > > +			if (!ino && is_inline_node(page)) {
> > > +				clear_inline_node(page);
> >
> > Should clear after flushed inline data? otherwise if we failed to flush
> > inline data, we will lose the change to flush it before node flush.
> 
> My intention was just letting it go and flush by ->writepage later.

Hmm.. since it's rare scenario, so it's OK to me.

> So, the above set_page_dirty() would handle this, right?

Yes.

Please add
Reviewed-by: Chao Yu <chao2.yu@samsung.com>

Thanks,

> 
> Thanks,
> 
> >
> > Thanks,
> >
> > > +				unlock_page(page);
> > > +				flush_inline_data(sbi, ino_of_node(page));
> > > +				continue;
> > > +			}
> > > +
> > >  			if (!clear_page_dirty_for_io(page))
> > >  				goto continue_unlock;
> > >
> > > diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
> > > index 23bd992..1f4f9d4 100644
> > > --- a/fs/f2fs/node.h
> > > +++ b/fs/f2fs/node.h
> > > @@ -379,6 +379,21 @@ static inline int is_node(struct page *page, int type)
> > >  #define is_fsync_dnode(page)	is_node(page, FSYNC_BIT_SHIFT)
> > >  #define is_dent_dnode(page)	is_node(page, DENT_BIT_SHIFT)
> > >
> > > +static inline int is_inline_node(struct page *page)
> > > +{
> > > +	return PageChecked(page);
> > > +}
> > > +
> > > +static inline void set_inline_node(struct page *page)
> > > +{
> > > +	SetPageChecked(page);
> > > +}
> > > +
> > > +static inline void clear_inline_node(struct page *page)
> > > +{
> > > +	ClearPageChecked(page);
> > > +}
> > > +
> > >  static inline void set_cold_node(struct inode *inode, struct page *page)
> > >  {
> > >  	struct f2fs_node *rn = F2FS_NODE(page);
> > > --
> > > 2.6.3
> > >
> > >
> > > ------------------------------------------------------------------------------
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> > > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
> > > _______________________________________________
> > > Linux-f2fs-devel mailing list
> > > Linux-f2fs-devel@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

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