btrfs-progs: introduce key type for persistent permanent items

[platform/upstream/btrfs-progs.git] / ctree.h

diff --git a/ctree.h b/ctree.h
index 44d6249..255ebad 100644 (file)
--- a/ctree.h
+++ b/ctree.h
@@ -1211,10 +1211,42 @@ struct btrfs_root {
 #define BTRFS_QGROUP_RELATION_KEY      246
 
 /*
- * Persistently stores the io stats in the device tree.
- * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid).
+ * Obsolete name, see BTRFS_TEMPORARY_ITEM_KEY.
  */
-#define BTRFS_DEV_STATS_KEY    249
+#define BTRFS_BALANCE_ITEM_KEY 248
+
+/*
+ * The key type for tree items that are stored persistently, but do not need to
+ * exist for extended period of time. The items can exist in any tree.
+ *
+ * [subtype, BTRFS_TEMPORARY_ITEM_KEY, data]
+ *
+ * Existing items:
+ *
+ * - balance status item
+ *   (BTRFS_BALANCE_OBJECTID, BTRFS_TEMPORARY_ITEM_KEY, 0)
+ */
+#define BTRFS_TEMPORARY_ITEM_KEY       248
+
+/*
+ * Obsolete name, see BTRFS_PERSISTENT_ITEM_KEY
+ */
+#define BTRFS_DEV_STATS_KEY            249
+
+/*
+ * The key type for tree items that are stored persistently and usually exist
+ * for a long period, eg. filesystem lifetime. The item kinds can be status
+ * information, stats or preference values. The item can exist in any tree.
+ *
+ * [subtype, BTRFS_PERSISTENT_ITEM_KEY, data]
+ *
+ * Existing items:
+ *
+ * - device statistics, store IO stats in the device tree, one key for all
+ *   stats
+ *   (0, BTRFS_DEV_STATS_KEY, 0)
+ */
+#define BTRFS_PERSISTENT_ITEM_KEY      249
 
 /*
  * Persistently stores the device replace state in the device tree.
@@ -1246,6 +1278,15 @@ struct btrfs_root {
 #define BTRFS_INODE_NODATASUM          (1 << 0)
 #define BTRFS_INODE_NODATACOW          (1 << 1)
 #define BTRFS_INODE_READONLY           (1 << 2)
+#define BTRFS_INODE_NOCOMPRESS         (1 << 3)
+#define BTRFS_INODE_PREALLOC           (1 << 4)
+#define BTRFS_INODE_SYNC               (1 << 5)
+#define BTRFS_INODE_IMMUTABLE          (1 << 6)
+#define BTRFS_INODE_APPEND             (1 << 7)
+#define BTRFS_INODE_NODUMP             (1 << 8)
+#define BTRFS_INODE_NOATIME            (1 << 9)
+#define BTRFS_INODE_DIRSYNC            (1 << 10)
+#define BTRFS_INODE_COMPRESS           (1 << 11)
 
 #define read_eb_member(eb, ptr, type, member, result) (                        \
        read_extent_buffer(eb, (char *)(result),                        \
@@ -1834,12 +1875,6 @@ static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb,
        btrfs_disk_key_to_cpu(key, &disk_key);
 }
 
-
-static inline u8 btrfs_key_type(struct btrfs_key *key)
-{
-       return key->type;
-}
-
 /* struct btrfs_header */
 BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
 BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,