RE: [PATCH v2 1/2] f2fs: enable inline data by default

[Chao Yu]

Hi Wanpeng,

> -----Original Message-----
> From: Wanpeng Li [mailto:wanpeng.li@xxxxxxxxxxxxxxx]
> Sent: Monday, March 23, 2015 3:15 PM
> To: Chao Yu
> Cc: 'Jaegeuk Kim'; 'Changman Lee'; linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx;
> linux-fsdevel@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Wanpeng Li
> Subject: Re: [PATCH v2 1/2] f2fs: enable inline data by default
> 
> Hi Chao,
> On Mon, Mar 23, 2015 at 03:25:45PM +0800, Chao Yu wrote:
> >Hi Wanpeng,
> >
> >> -----Original Message-----
> >> From: Wanpeng Li [mailto:wanpeng.li@xxxxxxxxxxxxxxx]
> >> Sent: Monday, March 23, 2015 7:44 AM
> >> To: Jaegeuk Kim
> >> Cc: Changman Lee; Chao Yu; linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx;
> >> linux-fsdevel@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Wanpeng Li
> >> Subject: [PATCH v2 1/2] f2fs: enable inline data by default
> >>
> >> Enable inline_data feature by default since it brings us better
> >> performance and space utilization and now has already stable.
> >> Add another option noinline_data to disable it during mount.
> >>
> >> Suggested-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> >> Suggested-by: Chao Yu <chao2.yu@xxxxxxxxxxx>
> >> Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxxxxxx>
> >> ---
> >> v1 -> v2:
> >>  * retain inline_data option and enable it by default
> >>  * add another noinline_data option
> >>
> >>  Documentation/filesystems/f2fs.txt | 2 ++
> >>  fs/f2fs/f2fs.h                     | 1 +
> >>  fs/f2fs/inline.c                   | 2 +-
> >>  fs/f2fs/super.c                    | 8 ++++++++
> >>  4 files changed, 12 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
> >> index 48e2123..e9e750e 100644
> >> --- a/Documentation/filesystems/f2fs.txt
> >> +++ b/Documentation/filesystems/f2fs.txt
> >> @@ -144,6 +144,8 @@ extent_cache           Enable an extent cache based on rb-tree, it can
> cache
> >>                         as many as extent which map between contiguous logical
> >>                         address and physical address per inode, resulting in
> >>                         increasing the cache hit ratio.
> >> +noinline_data          Disable the inline data feature, inline data feature is
> >> +                       enabled by default.
> >>
> >>  ================================================================================
> >>  DEBUGFS ENTRIES
> >> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> >> index f2909c6..6d4ceb3 100644
> >> --- a/fs/f2fs/f2fs.h
> >> +++ b/fs/f2fs/f2fs.h
> >> @@ -51,6 +51,7 @@
> >>  #define F2FS_MOUNT_NOBARRIER		0x00000800
> >>  #define F2FS_MOUNT_FASTBOOT		0x00001000
> >>  #define F2FS_MOUNT_EXTENT_CACHE		0x00002000
> >> +#define F2FS_MOUNT_NOINLINE_DATA	0x00004000
> >
> >May be we could reuse F2FS_MOUNT_INLINE_DATA for saving inline/noinline status
> >like F2FS_MOUNT_BG_GC.
> >
> >e.g.
> >parse_options:
> >	case Opt_noinline_data:
> >		clear_opt(sbi, INLINE_DATA);
> >		break;
> >
> >f2fs_show_options:
> >	if (test_opt(sbi, INLINE_DATA))
> >		seq_puts(seq, ",inline_data");
> >	else
> >		seq_puts(seq, ",noinline_data");
> >
> >So we can avoid to show both options "inline_data,noinline_data" in ->show_options

Note "show content generated ->show_options", not content in /etc/mtab.

> >if we mount with noinline_data, since this will make our user confused.
> 
> I didn't see "inline_data, noinline_data" w/ noinline_data mount option, just
> "rw,noinline_data" dump out.

Try 'cat /proc/mounts'?

Thanks,

> 
> Ping Jaegeuk!
> 
> Regards,
> Wanpeng Li
> 
> >
> >How do you think?
> >
> >Thanks,
> >
> >>
> >>  #define clear_opt(sbi, option)	(sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
> >>  #define set_opt(sbi, option)	(sbi->mount_opt.opt |= F2FS_MOUNT_##option)
> >> diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
> >> index d3e0599..0363b57 100644
> >> --- a/fs/f2fs/inline.c
> >> +++ b/fs/f2fs/inline.c
> >> @@ -15,7 +15,7 @@
> >>
> >>  bool f2fs_may_inline(struct inode *inode)
> >>  {
> >> -	if (!test_opt(F2FS_I_SB(inode), INLINE_DATA))
> >> +	if (!test_opt(F2FS_I_SB(inode), NOINLINE_DATA))
> >>  		return false;
> >>
> >>  	if (f2fs_is_atomic_file(inode))
> >> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> >> index fc6857f..7b17795 100644
> >> --- a/fs/f2fs/super.c
> >> +++ b/fs/f2fs/super.c
> >> @@ -58,6 +58,7 @@ enum {
> >>  	Opt_nobarrier,
> >>  	Opt_fastboot,
> >>  	Opt_extent_cache,
> >> +	Opt_noinline_data,
> >>  	Opt_err,
> >>  };
> >>
> >> @@ -80,6 +81,7 @@ static match_table_t f2fs_tokens = {
> >>  	{Opt_nobarrier, "nobarrier"},
> >>  	{Opt_fastboot, "fastboot"},
> >>  	{Opt_extent_cache, "extent_cache"},
> >> +	{Opt_noinline_data, "noinline_data"},
> >>  	{Opt_err, NULL},
> >>  };
> >>
> >> @@ -372,6 +374,9 @@ static int parse_options(struct super_block *sb, char *options)
> >>  		case Opt_extent_cache:
> >>  			set_opt(sbi, EXTENT_CACHE);
> >>  			break;
> >> +		case Opt_noinline_data:
> >> +			set_opt(sbi, NOINLINE_DATA);
> >> +			break;
> >>  		default:
> >>  			f2fs_msg(sb, KERN_ERR,
> >>  				"Unrecognized mount option \"%s\" or missing value",
> >> @@ -606,6 +611,8 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
> >>  		seq_puts(seq, ",fastboot");
> >>  	if (test_opt(sbi, EXTENT_CACHE))
> >>  		seq_puts(seq, ",extent_cache");
> >> +	if (test_opt(sbi, NOINLINE_DATA))
> >> +		seq_puts(seq, ",noinline_data");
> >>  	seq_printf(seq, ",active_logs=%u", sbi->active_logs);
> >>
> >>  	return 0;
> >> @@ -991,6 +998,7 @@ try_onemore:
> >>  	sbi->active_logs = NR_CURSEG_TYPE;
> >>
> >>  	set_opt(sbi, BG_GC);
> >> +	set_opt(sbi, INLINE_DATA);
> >>
> >>  #ifdef CONFIG_F2FS_FS_XATTR
> >>  	set_opt(sbi, XATTR_USER);
> >> --
> >> 1.9.1

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