On 03/31, Yangtao Li wrote:
> This patch support noage_extent_cache mount option.
>
> Signed-off-by: Yangtao Li <frank...@vivo.com>
> ---
> Documentation/filesystems/f2fs.rst | 2 ++
> fs/f2fs/super.c | 7 +++++++
> 2 files changed, 9 insertions(+)
>
> diff --git a/Documentation/filesystems/f2fs.rst
> b/Documentation/filesystems/f2fs.rst
> index a81c896464ff..75505ab88de8 100644
> --- a/Documentation/filesystems/f2fs.rst
> +++ b/Documentation/filesystems/f2fs.rst
> @@ -352,6 +352,8 @@ age_extent_cache Enable an age extent cache based on
> rb-tree. It records
> data block update frequency of the extent per inode, in
> order to provide better temperature hints for data
> block
> allocation.
> +noage_extent_cache Disable an age extent cache based on rb-tree,
> see
> + the above age_extent_cache mount option.
Hmm, why do we need?
> ========================
> ============================================================
>
> Debugfs Entries
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index b5828a67f7c1..8bd9953ea7e3 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -165,6 +165,7 @@ enum {
> Opt_discard_unit,
> Opt_memory_mode,
> Opt_age_extent_cache,
> + Opt_noage_extent_cache,
> Opt_err,
> };
>
> @@ -244,6 +245,7 @@ static match_table_t f2fs_tokens = {
> {Opt_discard_unit, "discard_unit=%s"},
> {Opt_memory_mode, "memory=%s"},
> {Opt_age_extent_cache, "age_extent_cache"},
> + {Opt_noage_extent_cache, "noage_extent_cache"},
> {Opt_err, NULL},
> };
>
> @@ -1269,6 +1271,9 @@ static int parse_options(struct super_block *sb, char
> *options, bool is_remount)
> case Opt_age_extent_cache:
> set_opt(sbi, AGE_EXTENT_CACHE);
> break;
> + case Opt_noage_extent_cache:
> + clear_opt(sbi, AGE_EXTENT_CACHE);
> + break;
> default:
> f2fs_err(sbi, "Unrecognized mount option \"%s\" or
> missing value",
> p);
> @@ -1974,6 +1979,8 @@ static int f2fs_show_options(struct seq_file *seq,
> struct dentry *root)
> seq_puts(seq, ",noextent_cache");
> if (test_opt(sbi, AGE_EXTENT_CACHE))
> seq_puts(seq, ",age_extent_cache");
> + else
> + seq_puts(seq, ",noage_extent_cache");
> if (test_opt(sbi, DATA_FLUSH))
> seq_puts(seq, ",data_flush");
>
> --
> 2.35.1
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