Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / btrfs / sysfs.h

diff --git a/kernel/fs/btrfs/sysfs.h b/kernel/fs/btrfs/sysfs.h
new file mode 100644 (file)
index 0000000..3a4bbed
--- /dev/null
+++ b/kernel/fs/btrfs/sysfs.h
@@ -0,0 +1,89 @@
+#ifndef _BTRFS_SYSFS_H_
+#define _BTRFS_SYSFS_H_
+
+/*
+ * Data exported through sysfs
+ */
+extern u64 btrfs_debugfs_test;
+
+enum btrfs_feature_set {
+       FEAT_COMPAT,
+       FEAT_COMPAT_RO,
+       FEAT_INCOMPAT,
+       FEAT_MAX
+};
+
+#define __INIT_KOBJ_ATTR(_name, _mode, _show, _store)                  \
+{                                                                      \
+       .attr   = { .name = __stringify(_name), .mode = _mode },        \
+       .show   = _show,                                                \
+       .store  = _store,                                               \
+}
+
+#define BTRFS_ATTR_RW(_name, _show, _store)                    \
+       static struct kobj_attribute btrfs_attr_##_name =               \
+                       __INIT_KOBJ_ATTR(_name, 0644, _show, _store)
+
+#define BTRFS_ATTR(_name, _show)                                       \
+       static struct kobj_attribute btrfs_attr_##_name =               \
+                       __INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
+
+#define BTRFS_ATTR_PTR(_name)    (&btrfs_attr_##_name.attr)
+
+#define BTRFS_RAID_ATTR(_name, _show)                                  \
+       static struct kobj_attribute btrfs_raid_attr_##_name =          \
+                       __INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
+
+#define BTRFS_RAID_ATTR_PTR(_name)    (&btrfs_raid_attr_##_name.attr)
+
+
+struct btrfs_feature_attr {
+       struct kobj_attribute kobj_attr;
+       enum btrfs_feature_set feature_set;
+       u64 feature_bit;
+};
+
+#define BTRFS_FEAT_ATTR(_name, _feature_set, _prefix, _feature_bit)         \
+static struct btrfs_feature_attr btrfs_attr_##_name = {                             \
+       .kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO,                        \
+                                     btrfs_feature_attr_show,               \
+                                     btrfs_feature_attr_store),             \
+       .feature_set    = _feature_set,                                      \
+       .feature_bit    = _prefix ##_## _feature_bit,                        \
+}
+#define BTRFS_FEAT_ATTR_PTR(_name)    (&btrfs_attr_##_name.kobj_attr.attr)
+
+#define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
+       BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)
+#define BTRFS_FEAT_ATTR_COMPAT_RO(name, feature) \
+       BTRFS_FEAT_ATTR(name, FEAT_COMPAT_RO, BTRFS_FEATURE_COMPAT, feature)
+#define BTRFS_FEAT_ATTR_INCOMPAT(name, feature) \
+       BTRFS_FEAT_ATTR(name, FEAT_INCOMPAT, BTRFS_FEATURE_INCOMPAT, feature)
+
+/* convert from attribute */
+static inline struct btrfs_feature_attr *
+to_btrfs_feature_attr(struct kobj_attribute *a)
+{
+       return container_of(a, struct btrfs_feature_attr, kobj_attr);
+}
+
+static inline struct kobj_attribute *attr_to_btrfs_attr(struct attribute *attr)
+{
+       return container_of(attr, struct kobj_attribute, attr);
+}
+
+static inline struct btrfs_feature_attr *
+attr_to_btrfs_feature_attr(struct attribute *attr)
+{
+       return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
+}
+
+char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
+extern const char * const btrfs_feature_set_names[3];
+extern struct kobj_type space_info_ktype;
+extern struct kobj_type btrfs_raid_ktype;
+int btrfs_kobj_add_device(struct btrfs_fs_info *fs_info,
+               struct btrfs_device *one_device);
+int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info,
+                struct btrfs_device *one_device);
+#endif /* _BTRFS_SYSFS_H_ */