xfs: introduce realtime refcount btree definitions

Add new realtime refcount btree definitions. The realtime refcount btree
will be rooted from a hidden inode, but has its own shape and therefore
needs to have most of its own separate types.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

6 files changed, 14 insertions, 4 deletions

diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 920d4c761785..90ad8dbfec38 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -31,10 +31,10 @@
  */
 static const uint32_t xfs_magics[2][XFS_BTNUM_MAX] = {
 	{ XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, 0, XFS_BMAP_MAGIC, XFS_IBT_MAGIC,
-	  XFS_FIBT_MAGIC, 0, 0 },
+	  XFS_FIBT_MAGIC, 0, 0, 0 },
 	{ XFS_ABTB_CRC_MAGIC, XFS_ABTC_CRC_MAGIC, XFS_RMAP_CRC_MAGIC,
 	  XFS_BMAP_CRC_MAGIC, XFS_IBT_CRC_MAGIC, XFS_FIBT_CRC_MAGIC,
-	  XFS_REFC_CRC_MAGIC, XFS_RTRMAP_CRC_MAGIC }
+	  XFS_REFC_CRC_MAGIC, XFS_RTRMAP_CRC_MAGIC, XFS_RTREFC_CRC_MAGIC }
 };
 
 uint32_t
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h
index d1bf64372b5b..e6f9509b20a6 100644
--- a/fs/xfs/libxfs/xfs_btree.h
+++ b/fs/xfs/libxfs/xfs_btree.h
@@ -65,6 +65,7 @@ union xfs_btree_rec {
 #define	XFS_BTNUM_RMAP	((xfs_btnum_t)XFS_BTNUM_RMAPi)
 #define	XFS_BTNUM_REFC	((xfs_btnum_t)XFS_BTNUM_REFCi)
 #define	XFS_BTNUM_RTRMAP	((xfs_btnum_t)XFS_BTNUM_RTRMAPi)
+#define XFS_BTNUM_RTREFC	((xfs_btnum_t)XFS_BTNUM_RTREFCi)
 
 uint32_t xfs_btree_magic(int crc, xfs_btnum_t btnum);
 
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 2e374ef51a21..8a6d2e25fe1d 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -1902,6 +1902,12 @@ struct xfs_refcount_irec {
 /* btree pointer type */
 typedef __be32 xfs_refcount_ptr_t;
 
+/*
+ * Realtime Reference Count btree format definitions
+ *
+ * This is a btree for reference count records for realtime volumes
+ */
+#define	XFS_RTREFC_CRC_MAGIC	0x52434e54	/* 'RCNT' */
 
 /*
  * BMAP Btree format definitions
diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
index ad1067070fd4..086153d46e28 100644
--- a/fs/xfs/libxfs/xfs_types.h
+++ b/fs/xfs/libxfs/xfs_types.h
@@ -118,7 +118,7 @@ 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_RTRMAPi,
-	XFS_BTNUM_MAX
+	XFS_BTNUM_RTREFCi, XFS_BTNUM_MAX
 } xfs_btnum_t;
 
 #define XFS_BTNUM_STRINGS \
@@ -129,7 +129,8 @@ typedef enum {
 	{ XFS_BTNUM_INOi,	"inobt" }, \
 	{ XFS_BTNUM_FINOi,	"finobt" }, \
 	{ XFS_BTNUM_REFCi,	"refcbt" }, \
-	{ XFS_BTNUM_RTRMAPi,	"rtrmapbt" }
+	{ XFS_BTNUM_RTRMAPi,	"rtrmapbt" }, \
+	{ XFS_BTNUM_RTREFCi,	"rtrefcbt" }
 
 struct xfs_name {
 	const unsigned char	*name;
diff --git a/fs/xfs/scrub/trace.h b/fs/xfs/scrub/trace.h
index c4e4fa477190..b708dd61a9a7 100644
--- a/fs/xfs/scrub/trace.h
+++ b/fs/xfs/scrub/trace.h
@@ -29,6 +29,7 @@ TRACE_DEFINE_ENUM(XFS_BTNUM_FINOi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_RMAPi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_REFCi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_RTRMAPi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_RTREFCi);
 
 TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_PROBE);
 TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_SB);
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 163ef6c522d4..b21ac30511ca 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -2347,6 +2347,7 @@ TRACE_DEFINE_ENUM(XFS_BTNUM_FINOi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_RMAPi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_REFCi);
 TRACE_DEFINE_ENUM(XFS_BTNUM_RTRMAPi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_RTREFCi);
 
 DECLARE_EVENT_CLASS(xfs_btree_cur_class,
 	TP_PROTO(struct xfs_btree_cur *cur, int level, struct xfs_buf *bp),