Btrfs: Add inode flags support

This patch adds NODATASUM & NODATACOW inode flags support.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index f0fb1978553c..7eda51542d17 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -447,7 +447,18 @@ struct btrfs_root {
 #define btrfs_set_opt(o, opt)           ((o) |= BTRFS_MOUNT_##opt)
 #define btrfs_test_opt(root, opt)       ((root)->fs_info->mount_opt & \
                                          BTRFS_MOUNT_##opt)
-
+/*
+ * Inode flags
+ */
+#define BTRFS_INODE_NODATASUM           0x1
+#define BTRFS_INODE_NODATACOW           0x2
+
+#define btrfs_clear_flag(inode, flag)   (BTRFS_I(inode)->flags &= \
+                                         ~BTRFS_INODE_##flag)
+#define btrfs_set_flag(inode, flag)     (BTRFS_I(inode)->flags |= \
+                                         BTRFS_INODE_##flag)
+#define btrfs_test_flag(inode, flag)    (BTRFS_I(inode)->flags & \
+                                         BTRFS_INODE_##flag)
 /* some macros to generate set/get funcs for the struct fields.  This
  * assumes there is a lefoo_to_cpu for every type, so lets make a simple
  * one for u8: