diff mbox

[04/19] xfs: introduce realtime rmap btree definitions

Message ID 150421162950.17458.13956738145194349139.stgit@magnolia (mailing list archive)
State Superseded
Headers show

Commit Message

Darrick J. Wong Aug. 31, 2017, 8:33 p.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

Add new realtime rmap btree definitions. The realtime rmap 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 <darrick.wong@oracle.com>
---
 fs/xfs/libxfs/xfs_btree.c  |    4 ++--
 fs/xfs/libxfs/xfs_btree.h  |    1 +
 fs/xfs/libxfs/xfs_format.h |    7 +++++++
 fs/xfs/libxfs/xfs_types.h  |    3 ++-
 4 files changed, 12 insertions(+), 3 deletions(-)



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diff mbox

Patch

diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index d0a357e..c0614e4 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -45,10 +45,10 @@  kmem_zone_t	*xfs_btree_cur_zone;
  */
 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 },
+	  XFS_FIBT_MAGIC, 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_REFC_CRC_MAGIC, XFS_RTRMAP_CRC_MAGIC }
 };
 
 uint32_t
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h
index 39d2143..e7bbf760 100644
--- a/fs/xfs/libxfs/xfs_btree.h
+++ b/fs/xfs/libxfs/xfs_btree.h
@@ -75,6 +75,7 @@  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_RTRMAP	((xfs_btnum_t)XFS_BTNUM_RTRMAPi)
 
 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 294aa65..c9138d5 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -1462,6 +1462,13 @@  typedef __be32 xfs_rmap_ptr_t;
 	 XFS_IBT_BLOCK(mp) + 1)
 
 /*
+ * Realtime Reverse mapping btree format definitions
+ *
+ * There is a btree for the reverse map per allocation group
+ */
+#define	XFS_RTRMAP_CRC_MAGIC	0x4d415052	/* 'MAPR' */
+
+/*
  * Reference Count Btree format definitions
  *
  */
diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
index 0220159..9fa4236 100644
--- a/fs/xfs/libxfs/xfs_types.h
+++ b/fs/xfs/libxfs/xfs_types.h
@@ -112,7 +112,8 @@  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_RTRMAPi,
+	XFS_BTNUM_MAX
 } xfs_btnum_t;
 
 struct xfs_name {