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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-06-03 22:31:08 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-06-23 11:09:35 +0300 |
| commit | 4c89b53d05f1f5d25e9aec09c00351994101cc97 (patch) | |
| tree | af624cd168031810162bb5a39ecd27d3b3e6c9b4 /fs/f2fs/f2fs.h | |
| parent | 4a196df4cfba0b6a74023e6b36427f2bf2ddcdba (diff) | |
| download | linux-4c89b53d05f1f5d25e9aec09c00351994101cc97.tar.xz | |
f2fs: clean up /sys/fs/f2fs/<disk>/features
Let's create /sys/fs/f2fs/<disk>/feature_list/ to meet sysfs rule.
Note that there are three feature list entries:
1) /sys/fs/f2fs/features
: shows runtime features supported by in-kernel f2fs along with Kconfig.
- ref. F2FS_FEATURE_RO_ATTR()
2) /sys/fs/f2fs/$s_id/features <deprecated>
: shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
won't add new feature anymore, and thus, users should check entries in 3)
instead of this 2).
3) /sys/fs/f2fs/$s_id/feature_list
: shows on-disk features enabled by mkfs.f2fs per instance, which follows
sysfs entry rule where each entry should expose single value.
This list covers old feature list provided by 2) and beyond. Therefore,
please add new on-disk feature in this list only.
- ref. F2FS_SB_FEATURE_RO_ATTR()
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 8903c43091f8..bbc36828a9d9 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1665,6 +1665,9 @@ struct f2fs_sb_info { struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */ struct completion s_stat_kobj_unregister; + struct kobject s_feature_list_kobj; /* /sys/fs/f2fs/<devname>/feature_list */ + struct completion s_feature_list_kobj_unregister; + /* For shrinker support */ struct list_head s_list; int s_ndevs; /* number of devices */ |