[PATCH 2/6] xfs: define an in-memory btree for storing refcount bag info during repairs

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Create a new in-memory btree type so that we can store refcount bag info
in a much more memory-efficient format.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 libxfs/xfs_btree.h |    1 +
 libxfs/xfs_types.h |    6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)


diff --git a/libxfs/xfs_btree.h b/libxfs/xfs_btree.h
index edbcd4f0e98..339b5561e5b 100644
--- a/libxfs/xfs_btree.h
+++ b/libxfs/xfs_btree.h
@@ -62,6 +62,7 @@ union xfs_btree_rec {
 #define	XFS_BTNUM_FINO	((xfs_btnum_t)XFS_BTNUM_FINOi)
 #define	XFS_BTNUM_RMAP	((xfs_btnum_t)XFS_BTNUM_RMAPi)
 #define	XFS_BTNUM_REFC	((xfs_btnum_t)XFS_BTNUM_REFCi)
+#define	XFS_BTNUM_RCBAG	((xfs_btnum_t)XFS_BTNUM_RCBAGi)
 
 struct xfs_btree_ops;
 uint32_t xfs_btree_magic(struct xfs_mount *mp, const struct xfs_btree_ops *ops);
diff --git a/libxfs/xfs_types.h b/libxfs/xfs_types.h
index 035bf703d71..5556615a2ff 100644
--- a/libxfs/xfs_types.h
+++ b/libxfs/xfs_types.h
@@ -121,7 +121,8 @@ typedef enum {
  */
 typedef enum {
 	XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_RMAPi, XFS_BTNUM_BMAPi,
-	XFS_BTNUM_INOi, XFS_BTNUM_FINOi, XFS_BTNUM_REFCi, XFS_BTNUM_MAX
+	XFS_BTNUM_INOi, XFS_BTNUM_FINOi, XFS_BTNUM_REFCi, XFS_BTNUM_RCBAGi,
+	XFS_BTNUM_MAX
 } xfs_btnum_t;
 
 #define XFS_BTNUM_STRINGS \
@@ -131,7 +132,8 @@ typedef enum {
 	{ XFS_BTNUM_BMAPi,	"bmbt" }, \
 	{ XFS_BTNUM_INOi,	"inobt" }, \
 	{ XFS_BTNUM_FINOi,	"finobt" }, \
-	{ XFS_BTNUM_REFCi,	"refcbt" }
+	{ XFS_BTNUM_REFCi,	"refcbt" }, \
+	{ XFS_BTNUM_RCBAGi,	"rcbagbt" }
 
 struct xfs_name {
 	const unsigned char	*name;