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Date: Mon, 23 Mar 2015 15:15:04 +0800
From: Wanpeng Li <wanpeng.li@...ux.intel.com>
To: Chao Yu <chao2.yu@...sung.com>
Cc: 'Jaegeuk Kim' <jaegeuk@...nel.org>,
'Changman Lee' <cm224.lee@...sung.com>,
linux-f2fs-devel@...ts.sourceforge.net,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
Wanpeng Li <wanpeng.li@...ux.intel.com>
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@...ux.intel.com]
>> Sent: Monday, March 23, 2015 7:44 AM
>> To: Jaegeuk Kim
>> Cc: Changman Lee; Chao Yu; linux-f2fs-devel@...ts.sourceforge.net;
>> linux-fsdevel@...r.kernel.org; linux-kernel@...r.kernel.org; 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@...nel.org>
>> Suggested-by: Chao Yu <chao2.yu@...sung.com>
>> Signed-off-by: Wanpeng Li <wanpeng.li@...ux.intel.com>
>> ---
>> 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
>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.
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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