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| author | Jeff Mahoney <jeffm@suse.com> | 2013-11-01 13:06:58 -0400 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-01-28 13:19:25 -0800 |
| commit | 5ac1d209f11271fbfad0fa31ba56ec64c142d9ea (patch) | |
| tree | 15f67ec6c85caa87b3358df2876f51becdf04b49 /fs/btrfs/sysfs.h | |
| parent | 079b72bca30dbc74c86c7c7825b8c34eb86ce3ee (diff) | |
| download | linux-5ac1d209f11271fbfad0fa31ba56ec64c142d9ea.tar.gz linux-5ac1d209f11271fbfad0fa31ba56ec64c142d9ea.tar.bz2 linux-5ac1d209f11271fbfad0fa31ba56ec64c142d9ea.zip | |
btrfs: publish per-super attributes in sysfs
This patch adds per-super attributes to sysfs.
It doesn't publish any attributes yet, but does the proper lifetime
handling as well as the basic infrastructure to add new attributes.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/sysfs.h')
| -rw-r--r-- | fs/btrfs/sysfs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h index 863e031ed1c1..d7c61bdf04ba 100644 --- a/fs/btrfs/sysfs.h +++ b/fs/btrfs/sysfs.h @@ -15,6 +15,13 @@ enum btrfs_feature_set { .store = _store, \ } +#define BTRFS_ATTR_RW(_name, _mode, _show, _store) \ +static struct kobj_attribute btrfs_attr_##_name = \ + __INIT_KOBJ_ATTR(_name, _mode, _show, _store) +#define BTRFS_ATTR(_name, _mode, _show) \ + BTRFS_ATTR_RW(_name, _mode, _show, NULL) +#define BTRFS_ATTR_PTR(_name) (&btrfs_attr_##_name.attr) + struct btrfs_feature_attr { struct kobj_attribute kobj_attr; enum btrfs_feature_set feature_set; @@ -40,4 +47,7 @@ static struct btrfs_feature_attr btrfs_attr_##_name = { \ /* convert from attribute */ #define to_btrfs_feature_attr(a) \ container_of(a, struct btrfs_feature_attr, kobj_attr) +#define attr_to_btrfs_attr(a) container_of(a, struct kobj_attribute, attr) +#define attr_to_btrfs_feature_attr(a) \ + to_btrfs_feature_attr(attr_to_btrfs_attr(a)) #endif /* _BTRFS_SYSFS_H_ */ |