[PATCH 03/48] libxfs: add crc format changes to generic btrees

[Dave Chinner <david@fromorbit.com>]

From: Dave Chinner <dchinner@redhat.com>

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 include/libxfs.h           |   15 +--
 include/xfs_alloc_btree.h  |   13 ++-
 include/xfs_bmap_btree.h   |   20 ++--
 include/xfs_btree.h        |   60 +++++++++--
 include/xfs_buf_item.h     |   24 ++++-
 include/xfs_dinode.h       |    4 +-
 include/xfs_ialloc_btree.h |   10 +-
 include/xfs_trans.h        |    2 +
 libxfs/rdwr.c              |   24 ++---
 libxfs/xfs.h               |    4 +
 libxfs/xfs_alloc_btree.c   |   99 +++++++++++------
 libxfs/xfs_attr_leaf.c     |    2 +-
 libxfs/xfs_bmap.c          |   49 ++++++---
 libxfs/xfs_bmap_btree.c    |  107 ++++++++++++------
 libxfs/xfs_btree.c         |  257 ++++++++++++++++++++++++++++++++++++--------
 libxfs/xfs_ialloc_btree.c  |   80 +++++++++-----
 libxfs/xfs_inode.c         |   33 +++---
 libxfs/xfs_mount.c         |    2 +-
 mdrestore/Makefile         |    2 +-
 19 files changed, 587 insertions(+), 220 deletions(-)

diff --git a/include/libxfs.h b/include/libxfs.h
index b6e83f4..a4564fd 100644
--- a/include/libxfs.h
+++ b/include/libxfs.h
@@ -240,14 +240,14 @@ struct xfs_buf_ops {
 typedef struct xfs_buf {
 	struct cache_node	b_node;
 	unsigned int		b_flags;
-	xfs_daddr_t		b_blkno;
+	xfs_daddr_t		b_bn;
 	unsigned		b_bcount;
 	unsigned int		b_length;
 	dev_t			b_dev;
 	pthread_mutex_t		b_lock;
 	pthread_t		b_holder;
 	unsigned int		b_recur;
-	void			*b_fsprivate;
+	void			*b_fspriv;
 	void			*b_fsprivate2;
 	void			*b_fsprivate3;
 	void			*b_addr;
@@ -273,9 +273,11 @@ enum xfs_buf_flags_t {	/* b_flags bits */
 	LIBXFS_B_DISCONTIG	= 0x0010,	/* discontiguous buffer */
 };
 
+#define XFS_BUF_DADDR_NULL		((xfs_daddr_t) (-1LL))
+
 #define XFS_BUF_PTR(bp)			((char *)(bp)->b_addr)
 #define xfs_buf_offset(bp, offset)	(XFS_BUF_PTR(bp) + (offset))
-#define XFS_BUF_ADDR(bp)		((bp)->b_blkno)
+#define XFS_BUF_ADDR(bp)		((bp)->b_bn)
 #define XFS_BUF_SIZE(bp)		((bp)->b_bcount)
 #define XFS_BUF_COUNT(bp)		((bp)->b_bcount)
 #define XFS_BUF_TARGET(bp)		((bp)->b_dev)
@@ -284,11 +286,11 @@ enum xfs_buf_flags_t {	/* b_flags bits */
 	XFS_BUF_SET_COUNT(bp,cnt);		\
 })
 
-#define XFS_BUF_SET_ADDR(bp,blk)	((bp)->b_blkno = (blk))
+#define XFS_BUF_SET_ADDR(bp,blk)	((bp)->b_bn = (blk))
 #define XFS_BUF_SET_COUNT(bp,cnt)	((bp)->b_bcount = (cnt))
 
-#define XFS_BUF_FSPRIVATE(bp,type)	((type)(bp)->b_fsprivate)
-#define XFS_BUF_SET_FSPRIVATE(bp,val)	(bp)->b_fsprivate = (void *)(val)
+#define XFS_BUF_FSPRIVATE(bp,type)	((type)(bp)->b_fspriv)
+#define XFS_BUF_SET_FSPRIVATE(bp,val)	(bp)->b_fspriv = (void *)(val)
 #define XFS_BUF_FSPRIVATE2(bp,type)	((type)(bp)->b_fsprivate2)
 #define XFS_BUF_SET_FSPRIVATE2(bp,val)	(bp)->b_fsprivate2 = (void *)(val)
 #define XFS_BUF_FSPRIVATE3(bp,type)	((type)(bp)->b_fsprivate3)
@@ -392,6 +394,7 @@ typedef struct xfs_log_item {
 	struct xfs_log_item_desc	*li_desc;	/* ptr to current desc*/
 	struct xfs_mount		*li_mountp;	/* ptr to fs mount */
 	uint				li_type;	/* item type */
+	xfs_lsn_t			li_lsn;
 } xfs_log_item_t;
 
 typedef struct xfs_inode_log_item {
diff --git a/include/xfs_alloc_btree.h b/include/xfs_alloc_btree.h
index 7e89a2b..70c3ea0 100644
--- a/include/xfs_alloc_btree.h
+++ b/include/xfs_alloc_btree.h
@@ -31,8 +31,10 @@ struct xfs_mount;
  * by blockcount and blockno.  All blocks look the same to make the code
  * simpler; if we have time later, we'll make the optimizations.
  */
-#define	XFS_ABTB_MAGIC	0x41425442	/* 'ABTB' for bno tree */
-#define	XFS_ABTC_MAGIC	0x41425443	/* 'ABTC' for cnt tree */
+#define	XFS_ABTB_MAGIC		0x41425442	/* 'ABTB' for bno tree */
+#define	XFS_ABTB_CRC_MAGIC	0x41423342	/* 'AB3B' */
+#define	XFS_ABTC_MAGIC		0x41425443	/* 'ABTC' for cnt tree */
+#define	XFS_ABTC_CRC_MAGIC	0x41423343	/* 'AB3C' */
 
 /*
  * Data record/key structure
@@ -59,10 +61,11 @@ typedef __be32 xfs_alloc_ptr_t;
 
 /*
  * Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
  */
-#define XFS_ALLOC_BLOCK_LEN(mp)	XFS_BTREE_SBLOCK_LEN
+#define XFS_ALLOC_BLOCK_LEN(mp) \
+	(xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+	 XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+	 XFS_BTREE_SBLOCK_LEN)
 
 /*
  * Record, key, and pointer address macros for btree blocks.
diff --git a/include/xfs_bmap_btree.h b/include/xfs_bmap_btree.h
index 88469ca..8a28b89 100644
--- a/include/xfs_bmap_btree.h
+++ b/include/xfs_bmap_btree.h
@@ -18,7 +18,8 @@
 #ifndef __XFS_BMAP_BTREE_H__
 #define __XFS_BMAP_BTREE_H__
 
-#define XFS_BMAP_MAGIC	0x424d4150	/* 'BMAP' */
+#define XFS_BMAP_MAGIC		0x424d4150	/* 'BMAP' */
+#define XFS_BMAP_CRC_MAGIC	0x424d4133	/* 'BMA3' */
 
 struct xfs_btree_cur;
 struct xfs_btree_block;
@@ -136,10 +137,11 @@ typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
 
 /*
  * Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
  */
-#define XFS_BMBT_BLOCK_LEN(mp)	XFS_BTREE_LBLOCK_LEN
+#define XFS_BMBT_BLOCK_LEN(mp) \
+	(xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+	 XFS_BTREE_LBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+	 XFS_BTREE_LBLOCK_LEN)
 
 #define XFS_BMBT_REC_ADDR(mp, block, index) \
 	((xfs_bmbt_rec_t *) \
@@ -186,12 +188,12 @@ typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
 #define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \
 	XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0))
 
-#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
-	(int)(XFS_BTREE_LBLOCK_LEN + \
+#define XFS_BMAP_BROOT_SPACE_CALC(mp, nrecs) \
+	(int)(XFS_BMBT_BLOCK_LEN(mp) + \
 	       ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
 
-#define XFS_BMAP_BROOT_SPACE(bb) \
-	(XFS_BMAP_BROOT_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs)))
+#define XFS_BMAP_BROOT_SPACE(mp, bb) \
+	(XFS_BMAP_BROOT_SPACE_CALC(mp, be16_to_cpu((bb)->bb_numrecs)))
 #define XFS_BMDR_SPACE_CALC(nrecs) \
 	(int)(sizeof(xfs_bmdr_block_t) + \
 	       ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
@@ -204,7 +206,7 @@ typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
 /*
  * Prototypes for xfs_bmap.c to call.
  */
-extern void xfs_bmdr_to_bmbt(struct xfs_mount *, xfs_bmdr_block_t *, int,
+extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int,
 			struct xfs_btree_block *, int);
 extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
 extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_host_t *r);
diff --git a/include/xfs_btree.h b/include/xfs_btree.h
index be1eb23..02f89d8 100644
--- a/include/xfs_btree.h
+++ b/include/xfs_btree.h
@@ -42,11 +42,15 @@ extern kmem_zone_t	*xfs_btree_cur_zone;
  * Generic btree header.
  *
  * This is a combination of the actual format used on disk for short and long
- * format btrees.  The first three fields are shared by both format, but
- * the pointers are different and should be used with care.
+ * format btrees.  The first three fields are shared by both format, but the
+ * pointers are different and should be used with care.
  *
- * To get the size of the actual short or long form headers please use
- * the size macros below.  Never use sizeof(xfs_btree_block).
+ * To get the size of the actual short or long form headers please use the size
+ * macros below.  Never use sizeof(xfs_btree_block).
+ *
+ * The blkno, crc, lsn, owner and uuid fields are only available in filesystems
+ * with the crc feature bit, and all accesses to them must be conditional on
+ * that flag.
  */
 struct xfs_btree_block {
 	__be32		bb_magic;	/* magic number for block type */
@@ -56,16 +60,35 @@ struct xfs_btree_block {
 		struct {
 			__be32		bb_leftsib;
 			__be32		bb_rightsib;
+
+			__be64		bb_blkno;
+			__be64		bb_lsn;
+			uuid_t		bb_uuid;
+			__be32		bb_owner;
+			__le32		bb_crc;
 		} s;			/* short form pointers */
 		struct	{
 			__be64		bb_leftsib;
 			__be64		bb_rightsib;
+
+			__be64		bb_blkno;
+			__be64		bb_lsn;
+			uuid_t		bb_uuid;
+			__be64		bb_owner;
+			__le32		bb_crc;
+			__be32		bb_pad; /* padding for alignment */
 		} l;			/* long form pointers */
 	} bb_u;				/* rest */
 };
 
 #define XFS_BTREE_SBLOCK_LEN	16	/* size of a short form block */
 #define XFS_BTREE_LBLOCK_LEN	24	/* size of a long form block */
+#define XFS_BTREE_CRCBLOCK_ADD	32	/* size of blkno + crc + uuid */
+
+#define XFS_BTREE_SBLOCK_CRC_OFF \
+	offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
+#define XFS_BTREE_LBLOCK_CRC_OFF \
+	offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
 
 
 /*
@@ -101,13 +124,11 @@ union xfs_btree_rec {
 #define	XFS_BB_NUMRECS		0x04
 #define	XFS_BB_LEFTSIB		0x08
 #define	XFS_BB_RIGHTSIB		0x10
+#define	XFS_BB_BLKNO		0x20
 #define	XFS_BB_NUM_BITS		5
 #define	XFS_BB_ALL_BITS		((1 << XFS_BB_NUM_BITS) - 1)
-
-/*
- * Magic numbers for btree blocks.
- */
-extern const __uint32_t	xfs_magics[];
+#define	XFS_BB_NUM_BITS_CRC	8
+#define	XFS_BB_ALL_BITS_CRC	((1 << XFS_BB_NUM_BITS_CRC) - 1)
 
 /*
  * Generic stats interface
@@ -275,6 +296,7 @@ typedef struct xfs_btree_cur
 #define XFS_BTREE_LONG_PTRS		(1<<0)	/* pointers are 64bits long */
 #define XFS_BTREE_ROOT_IN_INODE		(1<<1)	/* root may be variable size */
 #define XFS_BTREE_LASTREC_UPDATE	(1<<2)	/* track last rec externally */
+#define XFS_BTREE_CRC_BLOCKS		(1<<3)	/* uses extended btree blocks */
 
 
 #define	XFS_BTREE_NOERROR	0
@@ -412,8 +434,20 @@ xfs_btree_init_block(
 	__u32		magic,
 	__u16		level,
 	__u16		numrecs,
+	__u64		owner,
 	unsigned int	flags);
 
+void
+xfs_btree_init_block_int(
+	struct xfs_mount	*mp,
+	struct xfs_btree_block	*buf,
+	xfs_daddr_t		blkno,
+	__u32			magic,
+	__u16			level,
+	__u16			numrecs,
+	__u64			owner,
+	unsigned int		flags);
+
 /*
  * Common btree core entry points.
  */
@@ -427,6 +461,14 @@ int xfs_btree_delete(struct xfs_btree_cur *, int *);
 int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
 
 /*
+ * btree block CRC helpers
+ */
+void xfs_btree_lblock_calc_crc(struct xfs_buf *);
+bool xfs_btree_lblock_verify_crc(struct xfs_buf *);
+void xfs_btree_sblock_calc_crc(struct xfs_buf *);
+bool xfs_btree_sblock_verify_crc(struct xfs_buf *);
+
+/*
  * Internal btree helpers also used by xfs_bmap.c.
  */
 void xfs_btree_log_block(struct xfs_btree_cur *, struct xfs_buf *, int);
diff --git a/include/xfs_buf_item.h b/include/xfs_buf_item.h
index ee36c88..101ef83 100644
--- a/include/xfs_buf_item.h
+++ b/include/xfs_buf_item.h
@@ -24,19 +24,33 @@ extern kmem_zone_t	*xfs_buf_item_zone;
  * This flag indicates that the buffer contains on disk inodes
  * and requires special recovery handling.
  */
-#define	XFS_BLF_INODE_BUF	0x1
+#define	XFS_BLF_INODE_BUF	(1<<0)
 /*
  * This flag indicates that the buffer should not be replayed
  * during recovery because its blocks are being freed.
  */
-#define	XFS_BLF_CANCEL		0x2
+#define	XFS_BLF_CANCEL		(1<<1)
+
 /*
  * This flag indicates that the buffer contains on disk
  * user or group dquots and may require special recovery handling.
  */
-#define	XFS_BLF_UDQUOT_BUF	0x4
-#define XFS_BLF_PDQUOT_BUF	0x8
-#define	XFS_BLF_GDQUOT_BUF	0x10
+#define	XFS_BLF_UDQUOT_BUF	(1<<2)
+#define XFS_BLF_PDQUOT_BUF	(1<<3)
+#define	XFS_BLF_GDQUOT_BUF	(1<<4)
+
+/*
+ * all buffers now need flags to tell recovery where the magic number
+ * is so that it can verify and calculate the CRCs on the buffer correctly
+ * once the changes have been replayed into the buffer.
+ */
+#define XFS_BLF_BTREE_BUF	(1<<5)
+
+#define XFS_BLF_TYPE_MASK	\
+		(XFS_BLF_UDQUOT_BUF | \
+		 XFS_BLF_PDQUOT_BUF | \
+		 XFS_BLF_GDQUOT_BUF | \
+		 XFS_BLF_BTREE_BUF)
 
 #define	XFS_BLF_CHUNK		128
 #define	XFS_BLF_SHIFT		7
diff --git a/include/xfs_dinode.h b/include/xfs_dinode.h
index 88a3368..6b5bd17 100644
--- a/include/xfs_dinode.h
+++ b/include/xfs_dinode.h
@@ -107,8 +107,8 @@ typedef enum xfs_dinode_fmt {
 #define XFS_LITINO(mp, version) \
 	((int)(((mp)->m_sb.sb_inodesize) - sizeof(struct xfs_dinode)))
 
-#define	XFS_BROOT_SIZE_ADJ	\
-	(XFS_BTREE_LBLOCK_LEN - sizeof(xfs_bmdr_block_t))
+#define XFS_BROOT_SIZE_ADJ(ip) \
+	(XFS_BMBT_BLOCK_LEN((ip)->i_mount) - sizeof(xfs_bmdr_block_t))
 
 /*
  * Inode data & attribute fork sizes, per inode.
diff --git a/include/xfs_ialloc_btree.h b/include/xfs_ialloc_btree.h
index 25c0239..a1bfa7a 100644
--- a/include/xfs_ialloc_btree.h
+++ b/include/xfs_ialloc_btree.h
@@ -29,7 +29,8 @@ struct xfs_mount;
 /*
  * There is a btree for the inode map per allocation group.
  */
-#define	XFS_IBT_MAGIC	0x49414254	/* 'IABT' */
+#define	XFS_IBT_MAGIC		0x49414254	/* 'IABT' */
+#define	XFS_IBT_CRC_MAGIC	0x49414233	/* 'IAB3' */
 
 typedef	__uint64_t	xfs_inofree_t;
 #define	XFS_INODES_PER_CHUNK		(NBBY * sizeof(xfs_inofree_t))
@@ -76,10 +77,11 @@ typedef __be32 xfs_inobt_ptr_t;
 
 /*
  * Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
  */
-#define XFS_INOBT_BLOCK_LEN(mp)	XFS_BTREE_SBLOCK_LEN
+#define XFS_INOBT_BLOCK_LEN(mp) \
+	(xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+	 XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+	 XFS_BTREE_SBLOCK_LEN)
 
 /*
  * Record, key, and pointer address macros for btree blocks.
diff --git a/include/xfs_trans.h b/include/xfs_trans.h
index acf1381..a9bd826 100644
--- a/include/xfs_trans.h
+++ b/include/xfs_trans.h
@@ -500,6 +500,8 @@ void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
 void		xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
 void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
 void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
+void		xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
+				       uint);
 void		xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
 void		xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
 void		xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
diff --git a/libxfs/rdwr.c b/libxfs/rdwr.c
index e75edd0..e9cc7b1 100644
--- a/libxfs/rdwr.c
+++ b/libxfs/rdwr.c
@@ -323,17 +323,17 @@ libxfs_bcompare(struct cache_node *node, cache_key_t key)
 
 #ifdef IO_BCOMPARE_CHECK
 	if (bp->b_dev == bkey->device &&
-	    bp->b_blkno == bkey->blkno &&
+	    bp->b_bn == bkey->blkno &&
 	    bp->b_bcount != BBTOB(bkey->bblen))
 		fprintf(stderr, "%lx: Badness in key lookup (length)\n"
 			"bp=(bno 0x%llx, len %u bytes) key=(bno 0x%llx, len %u bytes)\n",
 			pthread_self(),
-			(unsigned long long)bp->b_blkno, (int)bp->b_bcount,
+			(unsigned long long)bp->b_bn, (int)bp->b_bcount,
 			(unsigned long long)bkey->blkno, BBTOB(bkey->bblen));
 #endif
 
 	return (bp->b_dev == bkey->device &&
-		bp->b_blkno == bkey->blkno &&
+		bp->b_bn == bkey->blkno &&
 		bp->b_bcount == BBTOB(bkey->bblen));
 }
 
@@ -341,7 +341,7 @@ void
 libxfs_bprint(xfs_buf_t *bp)
 {
 	fprintf(stderr, "Buffer 0x%p blkno=%llu bytes=%u flags=0x%x count=%u\n",
-		bp, (unsigned long long)bp->b_blkno, (unsigned)bp->b_bcount,
+		bp, (unsigned long long)bp->b_bn, (unsigned)bp->b_bcount,
 		bp->b_flags, bp->b_node.cn_count);
 }
 
@@ -349,7 +349,7 @@ static void
 __initbuf(xfs_buf_t *bp, dev_t device, xfs_daddr_t bno, unsigned int bytes)
 {
 	bp->b_flags = 0;
-	bp->b_blkno = bno;
+	bp->b_bn = bno;
 	bp->b_bcount = bytes;
 	bp->b_length = BTOBB(bytes);
 	bp->b_dev = device;
@@ -613,7 +613,7 @@ libxfs_purgebuf(xfs_buf_t *bp)
 	struct xfs_bufkey key = {0};
 
 	key.device = bp->b_dev;
-	key.blkno = bp->b_blkno;
+	key.blkno = bp->b_bn;
 	key.bblen = bp->b_bcount >> BBSHIFT;
 
 	cache_node_purge(libxfs_bcache, &key, (struct cache_node *)bp);
@@ -669,7 +669,7 @@ libxfs_readbufr(dev_t dev, xfs_daddr_t blkno, xfs_buf_t *bp, int len, int flags)
 	error = __read_buf(fd, bp->b_addr, bytes, LIBXFS_BBTOOFF64(blkno), flags);
 	if (!error &&
 	    bp->b_dev == dev &&
-	    bp->b_blkno == blkno &&
+	    bp->b_bn == blkno &&
 	    bp->b_bcount == bytes)
 		bp->b_flags |= LIBXFS_B_UPTODATE;
 #ifdef IO_DEBUG
@@ -736,7 +736,7 @@ libxfs_readbuf_map(dev_t dev, struct xfs_buf_map *map, int nmaps, int flags)
 #ifdef IO_DEBUG
 	printf("%lx: %s: read %lu bytes, error %d, blkno=%llu(%llu), %p\n",
 		pthread_self(), __FUNCTION__, buf - (char *)bp->b_addr, error,
-		(long long)LIBXFS_BBTOOFF64(bp->b_blkno), (long long)bp->b_blkno, bp);
+		(long long)LIBXFS_BBTOOFF64(bp->b_bn), (long long)bp->b_bn, bp);
 #endif
 	return bp;
 }
@@ -772,7 +772,7 @@ libxfs_writebufr(xfs_buf_t *bp)
 
 	if (!(bp->b_flags & LIBXFS_B_DISCONTIG)) {
 		error = __write_buf(fd, bp->b_addr, bp->b_bcount,
-				    LIBXFS_BBTOOFF64(bp->b_blkno), bp->b_flags);
+				    LIBXFS_BBTOOFF64(bp->b_bn), bp->b_flags);
 	} else {
 		int	i;
 		char	*buf = bp->b_addr;
@@ -794,8 +794,8 @@ libxfs_writebufr(xfs_buf_t *bp)
 #ifdef IO_DEBUG
 	printf("%lx: %s: wrote %u bytes, blkno=%llu(%llu), %p\n",
 			pthread_self(), __FUNCTION__, bp->b_bcount,
-			(long long)LIBXFS_BBTOOFF64(bp->b_blkno),
-			(long long)bp->b_blkno, bp);
+			(long long)LIBXFS_BBTOOFF64(bp->b_bn),
+			(long long)bp->b_bn, bp);
 #endif
 	if (!error) {
 		bp->b_flags |= LIBXFS_B_UPTODATE;
@@ -826,7 +826,7 @@ libxfs_iomove(xfs_buf_t *bp, uint boff, int len, void *data, int flags)
 	if (boff + len > bp->b_bcount) {
 		printf("Badness, iomove out of range!\n"
 			"bp=(bno 0x%llx, bytes %u) range=(boff %u, bytes %u)\n",
-			(long long)bp->b_blkno, bp->b_bcount, boff, len);
+			(long long)bp->b_bn, bp->b_bcount, boff, len);
 		abort();
 	}
 #endif
diff --git a/libxfs/xfs.h b/libxfs/xfs.h
index 9fbe261..b3b45bb 100644
--- a/libxfs/xfs.h
+++ b/libxfs/xfs.h
@@ -249,6 +249,7 @@ roundup_pow_of_two(uint v)
 #define	xfs_trans_agblocks_delta(tp, d)
 #define	xfs_trans_agflist_delta(tp, d)
 #define	xfs_trans_agbtree_delta(tp, d)
+#define xfs_trans_buf_set_type(tp, bp, t)
 
 #define xfs_buf_readahead(a,b,c,ops)		((void) 0)	/* no readahead */
 #define xfs_buf_readahead_map(a,b,c,ops)	((void) 0)	/* no readahead */
@@ -314,6 +315,9 @@ do { \
 #define xfs_trans_unreserve_quota_nblks(t,i,b,n,f)	((void) 0)
 #define xfs_qm_dqattach(i,f)				(0)
 
+#define uuid_copy(s,d)		platform_uuid_copy((s),(d))
+#define uuid_equal(s,d)		(platform_uuid_compare((s),(d)) == 0)
+
 /*
  * Prototypes for kernel static functions that are aren't in their
  * associated header files
diff --git a/libxfs/xfs_alloc_btree.c b/libxfs/xfs_alloc_btree.c
index a751c37..1ee1f48 100644
--- a/libxfs/xfs_alloc_btree.c
+++ b/libxfs/xfs_alloc_btree.c
@@ -253,7 +253,7 @@ xfs_allocbt_key_diff(
 	return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
 }
 
-static void
+static bool
 xfs_allocbt_verify(
 	struct xfs_buf		*bp)
 {
@@ -261,66 +261,98 @@ xfs_allocbt_verify(
 	struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
 	struct xfs_perag	*pag = bp->b_pag;
 	unsigned int		level;
-	int			sblock_ok; /* block passes checks */
 
 	/*
 	 * magic number and level verification
 	 *
-	 * During growfs operations, we can't verify the exact level as the
-	 * perag is not fully initialised and hence not attached to the buffer.
-	 * In this case, check against the maximum tree depth.
+	 * During growfs operations, we can't verify the exact level or owner as
+	 * the perag is not fully initialised and hence not attached to the
+	 * buffer.  In this case, check against the maximum tree depth.
 	 */
 	level = be16_to_cpu(block->bb_level);
 	switch (cpu_to_be32(block->bb_magic)) {
+	case XFS_ABTB_CRC_MAGIC:
+		if (!xfs_sb_version_hascrc(&mp->m_sb))
+			return false;
+		if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+			return false;
+		if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+			return false;
+		if (pag &&
+		    be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+			return false;
+		/* fall through */
 	case XFS_ABTB_MAGIC:
-		if (pag)
-			sblock_ok = level < pag->pagf_levels[XFS_BTNUM_BNOi];
-		else
-			sblock_ok = level < mp->m_ag_maxlevels;
+		if (pag) {
+			if (level >= pag->pagf_levels[XFS_BTNUM_BNOi])
+				return false;
+		} else if (level >= mp->m_ag_maxlevels)
+			return false;
 		break;
+	case XFS_ABTC_CRC_MAGIC:
+		if (!xfs_sb_version_hascrc(&mp->m_sb))
+			return false;
+		if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+			return false;
+		if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+			return false;
+		if (pag &&
+		    be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+			return false;
+		/* fall through */
 	case XFS_ABTC_MAGIC:
-		if (pag)
-			sblock_ok = level < pag->pagf_levels[XFS_BTNUM_CNTi];
-		else
-			sblock_ok = level < mp->m_ag_maxlevels;
+		if (pag) {
+			if (level >= pag->pagf_levels[XFS_BTNUM_CNTi])
+				return false;
+		} else if (level >= mp->m_ag_maxlevels)
+			return false;
 		break;
 	default:
-		sblock_ok = 0;
-		break;
+		return false;
 	}
 
 	/* numrecs verification */
-	sblock_ok = sblock_ok &&
-		be16_to_cpu(block->bb_numrecs) <= mp->m_alloc_mxr[level != 0];
+	if (be16_to_cpu(block->bb_numrecs) > mp->m_alloc_mxr[level != 0])
+		return false;
 
 	/* sibling pointer verification */
-	sblock_ok = sblock_ok &&
-		(block->bb_u.s.bb_leftsib == cpu_to_be32(NULLAGBLOCK) ||
-		 be32_to_cpu(block->bb_u.s.bb_leftsib) < mp->m_sb.sb_agblocks) &&
-		block->bb_u.s.bb_leftsib &&
-		(block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
-		 be32_to_cpu(block->bb_u.s.bb_rightsib) < mp->m_sb.sb_agblocks) &&
-		block->bb_u.s.bb_rightsib;
-
-	if (!sblock_ok) {
-		trace_xfs_btree_corrupt(bp, _RET_IP_);
-		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
-		xfs_buf_ioerror(bp, EFSCORRUPTED);
-	}
+	if (!block->bb_u.s.bb_leftsib ||
+	    (be32_to_cpu(block->bb_u.s.bb_leftsib) >= mp->m_sb.sb_agblocks &&
+	     block->bb_u.s.bb_leftsib != cpu_to_be32(NULLAGBLOCK)))
+		return false;
+	if (!block->bb_u.s.bb_rightsib ||
+	    (be32_to_cpu(block->bb_u.s.bb_rightsib) >= mp->m_sb.sb_agblocks &&
+	     block->bb_u.s.bb_rightsib != cpu_to_be32(NULLAGBLOCK)))
+		return false;
+
+	return true;
 }
 
 static void
 xfs_allocbt_read_verify(
 	struct xfs_buf	*bp)
 {
-	xfs_allocbt_verify(bp);
+	if (!(xfs_btree_sblock_verify_crc(bp) &&
+	      xfs_allocbt_verify(bp))) {
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+	}
 }
 
 static void
 xfs_allocbt_write_verify(
 	struct xfs_buf	*bp)
 {
-	xfs_allocbt_verify(bp);
+	if (!xfs_allocbt_verify(bp)) {
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+	}
+	xfs_btree_sblock_calc_crc(bp);
+
 }
 
 const struct xfs_buf_ops xfs_allocbt_buf_ops = {
@@ -498,6 +530,9 @@ xfs_allocbt_init_cursor(
 	cur->bc_private.a.agbp = agbp;
 	cur->bc_private.a.agno = agno;
 
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
+
 	return cur;
 }
 
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index 426130f..85cb31d 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -201,7 +201,7 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
 				return 0;
 			return dp->i_d.di_forkoff;
 		}
-		dsize = XFS_BMAP_BROOT_SPACE(dp->i_df.if_broot);
+		dsize = XFS_BMAP_BROOT_SPACE(mp, dp->i_df.if_broot);
 		break;
 	}
 
diff --git a/libxfs/xfs_bmap.c b/libxfs/xfs_bmap.c
index c8232a9..5e736a5 100644
--- a/libxfs/xfs_bmap.c
+++ b/libxfs/xfs_bmap.c
@@ -407,11 +407,15 @@ xfs_bmap_sanity_check(
 {
 	struct xfs_btree_block  *block = XFS_BUF_TO_BLOCK(bp);
 
-	if (block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC) ||
-	    be16_to_cpu(block->bb_level) != level ||
+	if (block->bb_magic != cpu_to_be32(XFS_BMAP_CRC_MAGIC) &&
+	    block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC))
+		return 0;
+
+	if (be16_to_cpu(block->bb_level) != level ||
 	    be16_to_cpu(block->bb_numrecs) == 0 ||
 	    be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
 		return 0;
+
 	return 1;
 }
 
@@ -914,6 +918,7 @@ xfs_bmap_extents_to_btree(
 	xfs_extnum_t		nextents;	/* number of file extents */
 	xfs_bmbt_ptr_t		*pp;		/* root block address pointer */
 
+	mp = ip->i_mount;
 	ifp = XFS_IFORK_PTR(ip, whichfork);
 	ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS);
 
@@ -927,16 +932,18 @@ xfs_bmap_extents_to_btree(
 	 * Fill in the root.
 	 */
 	block = ifp->if_broot;
-	block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
-	block->bb_level = cpu_to_be16(1);
-	block->bb_numrecs = cpu_to_be16(1);
-	block->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
-	block->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL,
+				 XFS_BMAP_CRC_MAGIC, 1, 1, ip->i_ino,
+				 XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+	else
+		xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL,
+				 XFS_BMAP_MAGIC, 1, 1, ip->i_ino,
+				 XFS_BTREE_LONG_PTRS);
 
 	/*
 	 * Need a cursor.  Can't allocate until bb_level is filled in.
 	 */
-	mp = ip->i_mount;
 	cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
 	cur->bc_private.b.firstblock = *firstblock;
 	cur->bc_private.b.flist = flist;
@@ -985,10 +992,15 @@ xfs_bmap_extents_to_btree(
 	 */
 	abp->b_ops = &xfs_bmbt_buf_ops;
 	ablock = XFS_BUF_TO_BLOCK(abp);
-	ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
-	ablock->bb_level = 0;
-	ablock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
-	ablock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		xfs_btree_init_block_int(mp, ablock, abp->b_bn,
+				XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino,
+				XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+	else
+		xfs_btree_init_block_int(mp, ablock, abp->b_bn,
+				XFS_BMAP_MAGIC, 0, 0, ip->i_ino,
+				XFS_BTREE_LONG_PTRS);
+
 	arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
 	nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
 	for (cnt = i = 0; i < nextents; i++) {
@@ -1016,8 +1028,8 @@ xfs_bmap_extents_to_btree(
 	 * Do all this logging at the end so that
 	 * the root is at the right level.
 	 */
-	xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
 	xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
+	xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
 	ASSERT(*curp == NULL);
 	*curp = cur;
 	*logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork);
@@ -1038,7 +1050,8 @@ xfs_bmap_local_to_extents(
 	xfs_extlen_t	total,		/* total blocks needed by transaction */
 	int		*logflagsp,	/* inode logging flags */
 	int		whichfork,
-	void		(*init_fn)(struct xfs_buf *bp,
+	void		(*init_fn)(struct xfs_trans *tp,
+				   struct xfs_buf *bp,
 				   struct xfs_inode *ip,
 				   struct xfs_ifork *ifp))
 {
@@ -1090,7 +1103,7 @@ xfs_bmap_local_to_extents(
 		bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
 
 		/* initialise the block and copy the data */
-		init_fn(bp, ip, ifp);
+		init_fn(tp, bp, ip, ifp);
 
 		/* account for the change in fork size and log everything */
 		xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
@@ -1197,16 +1210,19 @@ xfs_bmap_add_attrfork_extents(
  */
 STATIC void
 xfs_bmap_local_to_extents_init_fn(
+	struct xfs_trans	*tp,
 	struct xfs_buf		*bp,
 	struct xfs_inode	*ip,
 	struct xfs_ifork	*ifp)
 {
 	bp->b_ops = &xfs_bmbt_buf_ops;
 	memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
+	xfs_trans_buf_set_type(tp, bp, XFS_BLF_BTREE_BUF);
 }
 
 STATIC void
 xfs_symlink_local_to_remote(
+	struct xfs_trans	*tp,
 	struct xfs_buf		*bp,
 	struct xfs_inode	*ip,
 	struct xfs_ifork	*ifp)
@@ -1225,8 +1241,7 @@ xfs_symlink_local_to_remote(
  *
  * XXX (dgc): investigate whether directory conversion can use the generic
  * formatting callout. It should be possible - it's just a very complex
- * formatter. it would also require passing the transaction through to the init
- * function.
+ * formatter.
  */
 STATIC int					/* error */
 xfs_bmap_add_attrfork_local(
diff --git a/libxfs/xfs_bmap_btree.c b/libxfs/xfs_bmap_btree.c
index 836f52f..473db4a 100644
--- a/libxfs/xfs_bmap_btree.c
+++ b/libxfs/xfs_bmap_btree.c
@@ -38,24 +38,31 @@ xfs_extent_state(
  */
 void
 xfs_bmdr_to_bmbt(
-	struct xfs_mount	*mp,
+	struct xfs_inode	*ip,
 	xfs_bmdr_block_t	*dblock,
 	int			dblocklen,
 	struct xfs_btree_block	*rblock,
 	int			rblocklen)
 {
+	struct xfs_mount	*mp = ip->i_mount;
 	int			dmxr;
 	xfs_bmbt_key_t		*fkp;
 	__be64			*fpp;
 	xfs_bmbt_key_t		*tkp;
 	__be64			*tpp;
 
-	rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		xfs_btree_init_block_int(mp, rblock, XFS_BUF_DADDR_NULL,
+				 XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino,
+				 XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+	else
+		xfs_btree_init_block_int(mp, rblock, XFS_BUF_DADDR_NULL,
+				 XFS_BMAP_MAGIC, 0, 0, ip->i_ino,
+				 XFS_BTREE_LONG_PTRS);
+
 	rblock->bb_level = dblock->bb_level;
 	ASSERT(be16_to_cpu(rblock->bb_level) > 0);
 	rblock->bb_numrecs = dblock->bb_numrecs;
-	rblock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
-	rblock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
 	dmxr = xfs_bmdr_maxrecs(mp, dblocklen, 0);
 	fkp = XFS_BMDR_KEY_ADDR(dblock, 1);
 	tkp = XFS_BMBT_KEY_ADDR(mp, rblock, 1);
@@ -403,7 +410,13 @@ xfs_bmbt_to_bmdr(
 	xfs_bmbt_key_t		*tkp;
 	__be64			*tpp;
 
-	ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC));
+	if (xfs_sb_version_hascrc(&mp->m_sb)) {
+		ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_CRC_MAGIC));
+		ASSERT(uuid_equal(&rblock->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid));
+		ASSERT(rblock->bb_u.l.bb_blkno ==
+		       cpu_to_be64(XFS_BUF_DADDR_NULL));
+	} else
+		ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC));
 	ASSERT(rblock->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO));
 	ASSERT(rblock->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO));
 	ASSERT(rblock->bb_level != 0);
@@ -687,45 +700,59 @@ xfs_bmbt_key_diff(
 				      cur->bc_rec.b.br_startoff;
 }
 
-static void
+static bool
 xfs_bmbt_verify(
 	struct xfs_buf		*bp)
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 	struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
 	unsigned int		level;
-	int			lblock_ok; /* block passes checks */
 
-	/* magic number and level verification.
+	switch (be32_to_cpu(block->bb_magic)) {
+	case XFS_BMAP_CRC_MAGIC:
+		if (!xfs_sb_version_hascrc(&mp->m_sb))
+			return false;
+		if (!uuid_equal(&block->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid))
+			return false;
+		if (block->bb_u.l.bb_blkno != cpu_to_be64(bp->b_bn))
+			return false;
+		/*
+		 * XXX: need a better way of verifying the owner here. Right now
+		 * just make sure there has been one set.
+		 */
+		if (be64_to_cpu(block->bb_u.l.bb_owner) == 0)
+			return false;
+		/* fall through */
+	case XFS_BMAP_MAGIC:
+		break;
+	default:
+		return false;
+	}
+
+	/*
+	 * numrecs and level verification.
 	 *
-	 * We don't know waht fork we belong to, so just verify that the level
+	 * We don't know what fork we belong to, so just verify that the level
 	 * is less than the maximum of the two. Later checks will be more
 	 * precise.
 	 */
 	level = be16_to_cpu(block->bb_level);
-	lblock_ok = block->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC) &&
-		    level < MAX(mp->m_bm_maxlevels[0], mp->m_bm_maxlevels[1]);
-
-	/* numrecs verification */
-	lblock_ok = lblock_ok &&
-		be16_to_cpu(block->bb_numrecs) <= mp->m_bmap_dmxr[level != 0];
+	if (level > MAX(mp->m_bm_maxlevels[0], mp->m_bm_maxlevels[1]))
+		return false;
+	if (be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
+		return false;
 
 	/* sibling pointer verification */
-	lblock_ok = lblock_ok &&
-		block->bb_u.l.bb_leftsib &&
-		(block->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO) ||
-		 XFS_FSB_SANITY_CHECK(mp,
-			be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
-		block->bb_u.l.bb_rightsib &&
-		(block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO) ||
-		 XFS_FSB_SANITY_CHECK(mp,
-			be64_to_cpu(block->bb_u.l.bb_rightsib)));
-
-	if (!lblock_ok) {
-		trace_xfs_btree_corrupt(bp, _RET_IP_);
-		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
-		xfs_buf_ioerror(bp, EFSCORRUPTED);
-	}
+	if (!block->bb_u.l.bb_leftsib ||
+	    (block->bb_u.l.bb_leftsib != cpu_to_be64(NULLDFSBNO) &&
+	     !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_leftsib))))
+		return false;
+	if (!block->bb_u.l.bb_rightsib ||
+	    (block->bb_u.l.bb_rightsib != cpu_to_be64(NULLDFSBNO) &&
+	     !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_rightsib))))
+		return false;
+
+	return true;
 }
 
 static void
@@ -733,13 +760,29 @@ xfs_bmbt_read_verify(
 	struct xfs_buf	*bp)
 {
 	xfs_bmbt_verify(bp);
+	if (!(xfs_btree_lblock_verify_crc(bp) &&
+	      xfs_bmbt_verify(bp))) {
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+	}
+
 }
 
 static void
 xfs_bmbt_write_verify(
 	struct xfs_buf	*bp)
 {
-	xfs_bmbt_verify(bp);
+	if (!xfs_bmbt_verify(bp)) {
+		xfs_warn(bp->b_target->bt_mount, "bmbt daddr 0x%llx failed", bp->b_bn);
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+		return;
+	}
+	xfs_btree_lblock_calc_crc(bp);
 }
 
 const struct xfs_buf_ops xfs_bmbt_buf_ops = {
@@ -913,6 +956,8 @@ xfs_bmbt_init_cursor(
 
 	cur->bc_ops = &xfs_bmbt_ops;
 	cur->bc_flags = XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE;
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
 
 	cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork);
 	cur->bc_private.b.ip = ip;
diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c
index c35269b..a7c19e9 100644
--- a/libxfs/xfs_btree.c
+++ b/libxfs/xfs_btree.c
@@ -26,9 +26,13 @@ kmem_zone_t	*xfs_btree_cur_zone;
 /*
  * Btree magic numbers.
  */
-const __uint32_t xfs_magics[XFS_BTNUM_MAX] = {
-	XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, XFS_BMAP_MAGIC, XFS_IBT_MAGIC
+static const __uint32_t xfs_magics[2][XFS_BTNUM_MAX] = {
+	{ XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, XFS_BMAP_MAGIC, XFS_IBT_MAGIC },
+	{ XFS_ABTB_CRC_MAGIC, XFS_ABTC_CRC_MAGIC,
+	  XFS_BMAP_CRC_MAGIC, XFS_IBT_CRC_MAGIC }
 };
+#define xfs_btree_magic(cur) \
+	xfs_magics[!!((cur)->bc_flags & XFS_BTREE_CRC_BLOCKS)][cur->bc_btnum]
 
 
 STATIC int				/* error (0 or EFSCORRUPTED) */
@@ -38,30 +42,38 @@ xfs_btree_check_lblock(
 	int			level,	/* level of the btree block */
 	struct xfs_buf		*bp)	/* buffer for block, if any */
 {
-	int			lblock_ok; /* block passes checks */
+	int			lblock_ok = 1; /* block passes checks */
 	struct xfs_mount	*mp;	/* file system mount point */
 
 	mp = cur->bc_mp;
-	lblock_ok =
-		be32_to_cpu(block->bb_magic) == xfs_magics[cur->bc_btnum] &&
+
+	if (xfs_sb_version_hascrc(&mp->m_sb)) {
+		lblock_ok = lblock_ok &&
+			uuid_equal(&block->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid) &&
+			block->bb_u.l.bb_blkno == cpu_to_be64(
+				bp ? bp->b_bn : XFS_BUF_DADDR_NULL);
+	}
+
+	lblock_ok = lblock_ok &&
+		be32_to_cpu(block->bb_magic) == xfs_btree_magic(cur) &&
 		be16_to_cpu(block->bb_level) == level &&
 		be16_to_cpu(block->bb_numrecs) <=
 			cur->bc_ops->get_maxrecs(cur, level) &&
 		block->bb_u.l.bb_leftsib &&
 		(block->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO) ||
 		 XFS_FSB_SANITY_CHECK(mp,
-		 	be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
+			be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
 		block->bb_u.l.bb_rightsib &&
 		(block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO) ||
 		 XFS_FSB_SANITY_CHECK(mp,
-		 	be64_to_cpu(block->bb_u.l.bb_rightsib)));
+			be64_to_cpu(block->bb_u.l.bb_rightsib)));
+
 	if (unlikely(XFS_TEST_ERROR(!lblock_ok, mp,
 			XFS_ERRTAG_BTREE_CHECK_LBLOCK,
 			XFS_RANDOM_BTREE_CHECK_LBLOCK))) {
 		if (bp)
 			trace_xfs_btree_corrupt(bp, _RET_IP_);
-		XFS_ERROR_REPORT("xfs_btree_check_lblock", XFS_ERRLEVEL_LOW,
-				 mp);
+		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 	return 0;
@@ -74,16 +86,26 @@ xfs_btree_check_sblock(
 	int			level,	/* level of the btree block */
 	struct xfs_buf		*bp)	/* buffer containing block */
 {
+	struct xfs_mount	*mp;	/* file system mount point */
 	struct xfs_buf		*agbp;	/* buffer for ag. freespace struct */
 	struct xfs_agf		*agf;	/* ag. freespace structure */
 	xfs_agblock_t		agflen;	/* native ag. freespace length */
-	int			sblock_ok; /* block passes checks */
+	int			sblock_ok = 1; /* block passes checks */
 
+	mp = cur->bc_mp;
 	agbp = cur->bc_private.a.agbp;
 	agf = XFS_BUF_TO_AGF(agbp);
 	agflen = be32_to_cpu(agf->agf_length);
-	sblock_ok =
-		be32_to_cpu(block->bb_magic) == xfs_magics[cur->bc_btnum] &&
+
+	if (xfs_sb_version_hascrc(&mp->m_sb)) {
+		sblock_ok = sblock_ok &&
+			uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid) &&
+			block->bb_u.s.bb_blkno == cpu_to_be64(
+				bp ? bp->b_bn : XFS_BUF_DADDR_NULL);
+	}
+
+	sblock_ok = sblock_ok &&
+		be32_to_cpu(block->bb_magic) == xfs_btree_magic(cur) &&
 		be16_to_cpu(block->bb_level) == level &&
 		be16_to_cpu(block->bb_numrecs) <=
 			cur->bc_ops->get_maxrecs(cur, level) &&
@@ -93,13 +115,13 @@ xfs_btree_check_sblock(
 		(block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
 		 be32_to_cpu(block->bb_u.s.bb_rightsib) < agflen) &&
 		block->bb_u.s.bb_rightsib;
-	if (unlikely(XFS_TEST_ERROR(!sblock_ok, cur->bc_mp,
+
+	if (unlikely(XFS_TEST_ERROR(!sblock_ok, mp,
 			XFS_ERRTAG_BTREE_CHECK_SBLOCK,
 			XFS_RANDOM_BTREE_CHECK_SBLOCK))) {
 		if (bp)
 			trace_xfs_btree_corrupt(bp, _RET_IP_);
-		XFS_CORRUPTION_ERROR("xfs_btree_check_sblock",
-			XFS_ERRLEVEL_LOW, cur->bc_mp, block);
+		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 	return 0;
@@ -178,6 +200,72 @@ xfs_btree_check_ptr(
 #endif
 
 /*
+ * Calculate CRC on the whole btree block and stuff it into the
+ * long-form btree header.
+ *
+ * Prior to calculting the CRC, pull the LSN out of the buffer log item and put
+ * it into the buffer so recovery knows what the last modifcation was that made
+ * it to disk.
+ */
+void
+xfs_btree_lblock_calc_crc(
+	struct xfs_buf		*bp)
+{
+	struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
+	struct xfs_buf_log_item	*bip = bp->b_fspriv;
+
+	if (!xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+		return;
+	if (bip)
+		block->bb_u.l.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
+			 XFS_BTREE_LBLOCK_CRC_OFF);
+}
+
+bool
+xfs_btree_lblock_verify_crc(
+	struct xfs_buf		*bp)
+{
+	if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+		return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
+					XFS_BTREE_LBLOCK_CRC_OFF);
+	return true;
+}
+
+/*
+ * Calculate CRC on the whole btree block and stuff it into the
+ * short-form btree header.
+ *
+ * Prior to calculting the CRC, pull the LSN out of the buffer log item and put
+ * it into the buffer so recovery knows what the last modifcation was that made
+ * it to disk.
+ */
+void
+xfs_btree_sblock_calc_crc(
+	struct xfs_buf		*bp)
+{
+	struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
+	struct xfs_buf_log_item	*bip = bp->b_fspriv;
+
+	if (!xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+		return;
+	if (bip)
+		block->bb_u.s.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+	xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
+			 XFS_BTREE_SBLOCK_CRC_OFF);
+}
+
+bool
+xfs_btree_sblock_verify_crc(
+	struct xfs_buf		*bp)
+{
+	if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+		return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
+					XFS_BTREE_SBLOCK_CRC_OFF);
+	return true;
+}
+
+/*
  * Delete the btree cursor.
  */
 void
@@ -261,10 +349,8 @@ xfs_btree_dup_cursor(
 				*ncur = NULL;
 				return error;
 			}
-			new->bc_bufs[i] = bp;
-			ASSERT(!xfs_buf_geterror(bp));
-		} else
-			new->bc_bufs[i] = NULL;
+		}
+		new->bc_bufs[i] = bp;
 	}
 	*ncur = new;
 	return 0;
@@ -305,9 +391,17 @@ xfs_btree_dup_cursor(
  */
 static inline size_t xfs_btree_block_len(struct xfs_btree_cur *cur)
 {
-	return (cur->bc_flags & XFS_BTREE_LONG_PTRS) ?
-		XFS_BTREE_LBLOCK_LEN :
-		XFS_BTREE_SBLOCK_LEN;
+	size_t len;
+
+	if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+		len = XFS_BTREE_LBLOCK_LEN;
+	else
+		len = XFS_BTREE_SBLOCK_LEN;
+
+	if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS)
+		len += XFS_BTREE_CRCBLOCK_ADD;
+
+	return len;
 }
 
 /*
@@ -807,43 +901,85 @@ xfs_btree_set_sibling(
 }
 
 void
+xfs_btree_init_block_int(
+	struct xfs_mount	*mp,
+	struct xfs_btree_block	*buf,
+	xfs_daddr_t		blkno,
+	__u32			magic,
+	__u16			level,
+	__u16			numrecs,
+	__u64			owner,
+	unsigned int		flags)
+{
+	buf->bb_magic = cpu_to_be32(magic);
+	buf->bb_level = cpu_to_be16(level);
+	buf->bb_numrecs = cpu_to_be16(numrecs);
+
+	if (flags & XFS_BTREE_LONG_PTRS) {
+		buf->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
+		buf->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+		if (flags & XFS_BTREE_CRC_BLOCKS) {
+			buf->bb_u.l.bb_blkno = cpu_to_be64(blkno);
+			buf->bb_u.l.bb_owner = cpu_to_be64(owner);
+			uuid_copy(&buf->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid);
+			buf->bb_u.l.bb_pad = 0;
+		}
+	} else {
+		/* owner is a 32 bit value on short blocks */
+		__u32 __owner = (__u32)owner;
+
+		buf->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
+		buf->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
+		if (flags & XFS_BTREE_CRC_BLOCKS) {
+			buf->bb_u.s.bb_blkno = cpu_to_be64(blkno);
+			buf->bb_u.s.bb_owner = cpu_to_be32(__owner);
+			uuid_copy(&buf->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid);
+		}
+	}
+}
+
+void
 xfs_btree_init_block(
 	struct xfs_mount *mp,
 	struct xfs_buf	*bp,
 	__u32		magic,
 	__u16		level,
 	__u16		numrecs,
+	__u64		owner,
 	unsigned int	flags)
 {
-	struct xfs_btree_block	*new = XFS_BUF_TO_BLOCK(bp);
-
-	new->bb_magic = cpu_to_be32(magic);
-	new->bb_level = cpu_to_be16(level);
-	new->bb_numrecs = cpu_to_be16(numrecs);
-
-	if (flags & XFS_BTREE_LONG_PTRS) {
-		new->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
-		new->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
-	} else {
-		new->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
-		new->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
-	}
+	xfs_btree_init_block_int(mp, XFS_BUF_TO_BLOCK(bp), bp->b_bn,
+				 magic, level, numrecs, owner, flags);
 }
 
 STATIC void
 xfs_btree_init_block_cur(
 	struct xfs_btree_cur	*cur,
+	struct xfs_buf		*bp,
 	int			level,
-	int			numrecs,
-	struct xfs_buf		*bp)
+	int			numrecs)
 {
-	xfs_btree_init_block(cur->bc_mp, bp, xfs_magics[cur->bc_btnum],
-			       level, numrecs, cur->bc_flags);
+	__u64 owner;
+
+	/*
+	 * we can pull the owner from the cursor right now as the different
+	 * owners align directly with the pointer size of the btree. This may
+	 * change in future, but is safe for current users of the generic btree
+	 * code.
+	 */
+	if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+		owner = cur->bc_private.b.ip->i_ino;
+	else
+		owner = cur->bc_private.a.agno;
+
+	xfs_btree_init_block_int(cur->bc_mp, XFS_BUF_TO_BLOCK(bp), bp->b_bn,
+				 xfs_btree_magic(cur), level, numrecs,
+				 owner, cur->bc_flags);
 }
 
 /*
  * Return true if ptr is the last record in the btree and
- * we need to track updateѕ to this record.  The decision
+ * we need to track updates to this record.  The decision
  * will be further refined in the update_lastrec method.
  */
 STATIC int
@@ -1091,6 +1227,7 @@ xfs_btree_log_keys(
 	XFS_BTREE_TRACE_ARGBII(cur, bp, first, last);
 
 	if (bp) {
+		xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
 		xfs_trans_log_buf(cur->bc_tp, bp,
 				  xfs_btree_key_offset(cur, first),
 				  xfs_btree_key_offset(cur, last + 1) - 1);
@@ -1115,6 +1252,7 @@ xfs_btree_log_recs(
 	XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
 	XFS_BTREE_TRACE_ARGBII(cur, bp, first, last);
 
+	xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
 	xfs_trans_log_buf(cur->bc_tp, bp,
 			  xfs_btree_rec_offset(cur, first),
 			  xfs_btree_rec_offset(cur, last + 1) - 1);
@@ -1139,6 +1277,7 @@ xfs_btree_log_ptrs(
 		struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
 		int			level = xfs_btree_get_level(block);
 
+		xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
 		xfs_trans_log_buf(cur->bc_tp, bp,
 				xfs_btree_ptr_offset(cur, first, level),
 				xfs_btree_ptr_offset(cur, last + 1, level) - 1);
@@ -1167,7 +1306,12 @@ xfs_btree_log_block(
 		offsetof(struct xfs_btree_block, bb_numrecs),
 		offsetof(struct xfs_btree_block, bb_u.s.bb_leftsib),
 		offsetof(struct xfs_btree_block, bb_u.s.bb_rightsib),
-		XFS_BTREE_SBLOCK_LEN
+		offsetof(struct xfs_btree_block, bb_u.s.bb_blkno),
+		offsetof(struct xfs_btree_block, bb_u.s.bb_lsn),
+		offsetof(struct xfs_btree_block, bb_u.s.bb_uuid),
+		offsetof(struct xfs_btree_block, bb_u.s.bb_owner),
+		offsetof(struct xfs_btree_block, bb_u.s.bb_crc),
+		XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD
 	};
 	static const short	loffsets[] = {	/* table of offsets (long) */
 		offsetof(struct xfs_btree_block, bb_magic),
@@ -1175,17 +1319,40 @@ xfs_btree_log_block(
 		offsetof(struct xfs_btree_block, bb_numrecs),
 		offsetof(struct xfs_btree_block, bb_u.l.bb_leftsib),
 		offsetof(struct xfs_btree_block, bb_u.l.bb_rightsib),
-		XFS_BTREE_LBLOCK_LEN
+		offsetof(struct xfs_btree_block, bb_u.l.bb_blkno),
+		offsetof(struct xfs_btree_block, bb_u.l.bb_lsn),
+		offsetof(struct xfs_btree_block, bb_u.l.bb_uuid),
+		offsetof(struct xfs_btree_block, bb_u.l.bb_owner),
+		offsetof(struct xfs_btree_block, bb_u.l.bb_crc),
+		offsetof(struct xfs_btree_block, bb_u.l.bb_pad),
+		XFS_BTREE_LBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD
 	};
 
 	XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
 	XFS_BTREE_TRACE_ARGBI(cur, bp, fields);
 
 	if (bp) {
+		int nbits;
+
+		if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS) {
+			/*
+			 * We don't log the CRC when updating a btree
+			 * block but instead recreate it during log
+			 * recovery.  As the log buffers have checksums
+			 * of their this is safe and avoids logging a crc
+			 * update in a lot of places.
+			 */
+			if (fields == XFS_BB_ALL_BITS)
+				fields = XFS_BB_ALL_BITS_CRC;
+			nbits = XFS_BB_NUM_BITS_CRC;
+		} else {
+			nbits = XFS_BB_NUM_BITS;
+		}
 		xfs_btree_offsets(fields,
 				  (cur->bc_flags & XFS_BTREE_LONG_PTRS) ?
 					loffsets : soffsets,
-				  XFS_BB_NUM_BITS, &first, &last);
+				  nbits, &first, &last);
+		xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
 		xfs_trans_log_buf(cur->bc_tp, bp, first, last);
 	} else {
 		xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip,
@@ -2148,7 +2315,7 @@ xfs_btree_split(
 		goto error0;
 
 	/* Fill in the btree header for the new right block. */
-	xfs_btree_init_block_cur(cur, xfs_btree_get_level(left), 0, rbp);
+	xfs_btree_init_block_cur(cur, rbp, xfs_btree_get_level(left), 0);
 
 	/*
 	 * Split the entries between the old and the new block evenly.
@@ -2457,7 +2624,7 @@ xfs_btree_new_root(
 		nptr = 2;
 	}
 	/* Fill in the new block's btree header and log it. */
-	xfs_btree_init_block_cur(cur, cur->bc_nlevels, 2, nbp);
+	xfs_btree_init_block_cur(cur, nbp, cur->bc_nlevels, 2);
 	xfs_btree_log_block(cur, nbp, XFS_BB_ALL_BITS);
 	ASSERT(!xfs_btree_ptr_is_null(cur, &lptr) &&
 			!xfs_btree_ptr_is_null(cur, &rptr));
diff --git a/libxfs/xfs_ialloc_btree.c b/libxfs/xfs_ialloc_btree.c
index 0bc24cc..ee036bf 100644
--- a/libxfs/xfs_ialloc_btree.c
+++ b/libxfs/xfs_ialloc_btree.c
@@ -163,52 +163,82 @@ xfs_inobt_key_diff(
 			  cur->bc_rec.i.ir_startino;
 }
 
-void
+static int
 xfs_inobt_verify(
 	struct xfs_buf		*bp)
 {
 	struct xfs_mount	*mp = bp->b_target->bt_mount;
 	struct xfs_btree_block	*block = XFS_BUF_TO_BLOCK(bp);
+	struct xfs_perag	*pag = bp->b_pag;
 	unsigned int		level;
-	int			sblock_ok; /* block passes checks */
 
-	/* magic number and level verification */
-	level = be16_to_cpu(block->bb_level);
-	sblock_ok = block->bb_magic == cpu_to_be32(XFS_IBT_MAGIC) &&
-		    level < mp->m_in_maxlevels;
+	/*
+	 * During growfs operations, we can't verify the exact owner as the
+	 * perag is not fully initialised and hence not attached to the buffer.
+	 */
+	switch (be32_to_cpu(block->bb_magic)) {
+	case XFS_IBT_CRC_MAGIC:
+		if (!xfs_sb_version_hascrc(&mp->m_sb))
+			return false;
+		if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+			return false;
+		if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+			return false;
+		if (pag &&
+		    be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+			return false;
+		/* fall through */
+	case XFS_IBT_MAGIC:
+		break;
+	default:
+		return 0;
+	}
 
-	/* numrecs verification */
-	sblock_ok = sblock_ok &&
-		be16_to_cpu(block->bb_numrecs) <= mp->m_inobt_mxr[level != 0];
+	/* numrecs and level verification */
+	level = be16_to_cpu(block->bb_level);
+	if (level >= mp->m_in_maxlevels)
+		return false;
+	if (be16_to_cpu(block->bb_numrecs) > mp->m_inobt_mxr[level != 0])
+		return false;
 
 	/* sibling pointer verification */
-	sblock_ok = sblock_ok &&
-		(block->bb_u.s.bb_leftsib == cpu_to_be32(NULLAGBLOCK) ||
-		 be32_to_cpu(block->bb_u.s.bb_leftsib) < mp->m_sb.sb_agblocks) &&
-		block->bb_u.s.bb_leftsib &&
-		(block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
-		 be32_to_cpu(block->bb_u.s.bb_rightsib) < mp->m_sb.sb_agblocks) &&
-		block->bb_u.s.bb_rightsib;
-
-	if (!sblock_ok) {
-		trace_xfs_btree_corrupt(bp, _RET_IP_);
-		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
-		xfs_buf_ioerror(bp, EFSCORRUPTED);
-	}
+	if (!block->bb_u.s.bb_leftsib ||
+	    (be32_to_cpu(block->bb_u.s.bb_leftsib) >= mp->m_sb.sb_agblocks &&
+	     block->bb_u.s.bb_leftsib != cpu_to_be32(NULLAGBLOCK)))
+		return false;
+	if (!block->bb_u.s.bb_rightsib ||
+	    (be32_to_cpu(block->bb_u.s.bb_rightsib) >= mp->m_sb.sb_agblocks &&
+	     block->bb_u.s.bb_rightsib != cpu_to_be32(NULLAGBLOCK)))
+		return false;
+
+	return true;
 }
 
 static void
 xfs_inobt_read_verify(
 	struct xfs_buf	*bp)
 {
-	xfs_inobt_verify(bp);
+	if (!(xfs_btree_sblock_verify_crc(bp) &&
+	      xfs_inobt_verify(bp))) {
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+	}
 }
 
 static void
 xfs_inobt_write_verify(
 	struct xfs_buf	*bp)
 {
-	xfs_inobt_verify(bp);
+	if (!xfs_inobt_verify(bp)) {
+		trace_xfs_btree_corrupt(bp, _RET_IP_);
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+				     bp->b_target->bt_mount, bp->b_addr);
+		xfs_buf_ioerror(bp, EFSCORRUPTED);
+	}
+	xfs_btree_sblock_calc_crc(bp);
+
 }
 
 const struct xfs_buf_ops xfs_inobt_buf_ops = {
@@ -355,6 +385,8 @@ xfs_inobt_init_cursor(
 	cur->bc_blocklog = mp->m_sb.sb_blocklog;
 
 	cur->bc_ops = &xfs_inobt_ops;
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
 
 	cur->bc_private.a.agbp = agbp;
 	cur->bc_private.a.agno = agno;
diff --git a/libxfs/xfs_inode.c b/libxfs/xfs_inode.c
index 3cf2423..f9f792c 100644
--- a/libxfs/xfs_inode.c
+++ b/libxfs/xfs_inode.c
@@ -492,6 +492,7 @@ xfs_iformat_btree(
 	xfs_dinode_t		*dip,
 	int			whichfork)
 {
+	struct xfs_mount	*mp = ip->i_mount;
 	xfs_bmdr_block_t	*dfp;
 	xfs_ifork_t		*ifp;
 	/* REFERENCED */
@@ -500,7 +501,7 @@ xfs_iformat_btree(
 
 	ifp = XFS_IFORK_PTR(ip, whichfork);
 	dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork);
-	size = XFS_BMAP_BROOT_SPACE(dfp);
+	size = XFS_BMAP_BROOT_SPACE(mp, dfp);
 	nrecs = be16_to_cpu(dfp->bb_numrecs);
 
 	/*
@@ -511,14 +512,14 @@ xfs_iformat_btree(
 	 * blocks.
 	 */
 	if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <=
-			XFS_IFORK_MAXEXT(ip, whichfork) ||
+					XFS_IFORK_MAXEXT(ip, whichfork) ||
 		     XFS_BMDR_SPACE_CALC(nrecs) >
-			XFS_DFORK_SIZE(dip, ip->i_mount, whichfork) ||
+					XFS_DFORK_SIZE(dip, mp, whichfork) ||
 		     XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
-		xfs_warn(ip->i_mount, "corrupt inode %Lu (btree).",
-			(unsigned long long) ip->i_ino);
+		xfs_warn(mp, "corrupt inode %Lu (btree).",
+					(unsigned long long) ip->i_ino);
 		XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
-				 ip->i_mount, dip);
+					 mp, dip);
 		return XFS_ERROR(EFSCORRUPTED);
 	}
 
@@ -529,8 +530,7 @@ xfs_iformat_btree(
 	 * Copy and convert from the on-disk structure
 	 * to the in-memory structure.
 	 */
-	xfs_bmdr_to_bmbt(ip->i_mount, dfp,
-			 XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
+	xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
 			 ifp->if_broot, size);
 	ifp->if_flags &= ~XFS_IFEXTENTS;
 	ifp->if_flags |= XFS_IFBROOT;
@@ -813,7 +813,7 @@ xfs_iroot_realloc(
 		 * allocate it now and get out.
 		 */
 		if (ifp->if_broot_bytes == 0) {
-			new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(rec_diff);
+			new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff);
 			ifp->if_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS);
 			ifp->if_broot_bytes = (int)new_size;
 			return;
@@ -827,9 +827,9 @@ xfs_iroot_realloc(
 		 */
 		cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0);
 		new_max = cur_max + rec_diff;
-		new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
+		new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max);
 		ifp->if_broot = kmem_realloc(ifp->if_broot, new_size,
-				(size_t)XFS_BMAP_BROOT_SPACE_CALC(cur_max), /* old size */
+				XFS_BMAP_BROOT_SPACE_CALC(mp, cur_max),
 				KM_SLEEP | KM_NOFS);
 		op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
 						     ifp->if_broot_bytes);
@@ -837,7 +837,7 @@ xfs_iroot_realloc(
 						     (int)new_size);
 		ifp->if_broot_bytes = (int)new_size;
 		ASSERT(ifp->if_broot_bytes <=
-			XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
+			XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ(ip));
 		memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t));
 		return;
 	}
@@ -852,7 +852,7 @@ xfs_iroot_realloc(
 	new_max = cur_max + rec_diff;
 	ASSERT(new_max >= 0);
 	if (new_max > 0)
-		new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
+		new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max);
 	else
 		new_size = 0;
 	if (new_size > 0) {
@@ -860,7 +860,8 @@ xfs_iroot_realloc(
 		/*
 		 * First copy over the btree block header.
 		 */
-		memcpy(new_broot, ifp->if_broot, XFS_BTREE_LBLOCK_LEN);
+		memcpy(new_broot, ifp->if_broot,
+			XFS_BMBT_BLOCK_LEN(ip->i_mount));
 	} else {
 		new_broot = NULL;
 		ifp->if_flags &= ~XFS_IFBROOT;
@@ -890,7 +891,7 @@ xfs_iroot_realloc(
 	ifp->if_broot = new_broot;
 	ifp->if_broot_bytes = (int)new_size;
 	ASSERT(ifp->if_broot_bytes <=
-		XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
+		XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ(ip));
 	return;
 }
 
@@ -1161,7 +1162,7 @@ xfs_iflush_fork(
 			ASSERT(ifp->if_broot != NULL);
 			ASSERT(ifp->if_broot_bytes <=
 			       (XFS_IFORK_SIZE(ip, whichfork) +
-				XFS_BROOT_SIZE_ADJ));
+				XFS_BROOT_SIZE_ADJ(ip)));
 			xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes,
 				(xfs_bmdr_block_t *)cp,
 				XFS_DFORK_SIZE(dip, mp, whichfork));
diff --git a/libxfs/xfs_mount.c b/libxfs/xfs_mount.c
index b7514fb..7ab3519 100644
--- a/libxfs/xfs_mount.c
+++ b/libxfs/xfs_mount.c
@@ -333,7 +333,7 @@ xfs_sb_verify(
 	 * Only check the in progress field for the primary superblock as
 	 * mkfs.xfs doesn't clear it from secondary superblocks.
 	 */
-	error = xfs_mount_validate_sb(mp, &sb, bp->b_blkno == XFS_SB_DADDR);
+	error = xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR);
 	if (error)
 		xfs_buf_ioerror(bp, error);
 }
diff --git a/mdrestore/Makefile b/mdrestore/Makefile
index ca2d1a0..5171306 100644
--- a/mdrestore/Makefile
+++ b/mdrestore/Makefile
@@ -8,7 +8,7 @@ include $(TOPDIR)/include/builddefs
 LTCOMMAND = xfs_mdrestore
 CFILES = xfs_mdrestore.c
 
-LLDLIBS = $(LIBXFS) $(LIBRT) $(LIBPTHREAD)
+LLDLIBS = $(LIBXFS) $(LIBRT) $(LIBPTHREAD) $(LIBUUID)
 LTDEPENDENCIES = $(LIBXFS)
 LLDFLAGS = -static
 
-- 
1.7.10.4

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