[PATCH 01/46] xfs: move incore structures out of xfs_da_format.h

[Christoph Hellwig <hch@lst.de>]

Move the abstract in-memory version of various btree block headers
out of xfs_da_format.h as they aren't on-disk formats.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/libxfs/xfs_attr_leaf.h | 23 ++++++++++++++
 fs/xfs/libxfs/xfs_da_btree.h  | 13 ++++++++
 fs/xfs/libxfs/xfs_da_format.c |  1 +
 fs/xfs/libxfs/xfs_da_format.h | 57 -----------------------------------
 fs/xfs/libxfs/xfs_dir2.h      |  2 ++
 fs/xfs/libxfs/xfs_dir2_priv.h | 19 ++++++++++++
 6 files changed, 58 insertions(+), 57 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h
index bb0880057ee3..16208a7743df 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.h
+++ b/fs/xfs/libxfs/xfs_attr_leaf.h
@@ -16,6 +16,29 @@ struct xfs_da_state_blk;
 struct xfs_inode;
 struct xfs_trans;
 
+/*
+ * Incore version of the attribute leaf header.
+ */
+struct xfs_attr3_icleaf_hdr {
+	uint32_t	forw;
+	uint32_t	back;
+	uint16_t	magic;
+	uint16_t	count;
+	uint16_t	usedbytes;
+	/*
+	 * Firstused is 32-bit here instead of 16-bit like the on-disk variant
+	 * to support maximum fsb size of 64k without overflow issues throughout
+	 * the attr code. Instead, the overflow condition is handled on
+	 * conversion to/from disk.
+	 */
+	uint32_t	firstused;
+	__u8		holes;
+	struct {
+		uint16_t	base;
+		uint16_t	size;
+	} freemap[XFS_ATTR_LEAF_MAPSIZE];
+};
+
 /*
  * Used to keep a list of "remote value" extents when unlinking an inode.
  */
diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h
index ae0bbd20d9ca..02f7a21ab3a5 100644
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -124,6 +124,19 @@ typedef struct xfs_da_state {
 						/* for dirv2 extrablk is data */
 } xfs_da_state_t;
 
+/*
+ * In-core version of the node header to abstract the differences in the v2 and
+ * v3 disk format of the headers. Callers need to convert to/from disk format as
+ * appropriate.
+ */
+struct xfs_da3_icnode_hdr {
+	uint32_t		forw;
+	uint32_t		back;
+	uint16_t		magic;
+	uint16_t		count;
+	uint16_t		level;
+};
+
 /*
  * Utility macros to aid in logging changed structure fields.
  */
diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c
index b1ae572496b6..31bb250c1899 100644
--- a/fs/xfs/libxfs/xfs_da_format.c
+++ b/fs/xfs/libxfs/xfs_da_format.c
@@ -13,6 +13,7 @@
 #include "xfs_mount.h"
 #include "xfs_inode.h"
 #include "xfs_dir2.h"
+#include "xfs_dir2_priv.h"
 
 /*
  * Shortform directory ops
diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h
index ae654e06b2fb..548806060f45 100644
--- a/fs/xfs/libxfs/xfs_da_format.h
+++ b/fs/xfs/libxfs/xfs_da_format.h
@@ -93,19 +93,6 @@ struct xfs_da3_intnode {
 	struct xfs_da_node_entry __btree[];
 };
 
-/*
- * In-core version of the node header to abstract the differences in the v2 and
- * v3 disk format of the headers. Callers need to convert to/from disk format as
- * appropriate.
- */
-struct xfs_da3_icnode_hdr {
-	uint32_t	forw;
-	uint32_t	back;
-	uint16_t	magic;
-	uint16_t	count;
-	uint16_t	level;
-};
-
 /*
  * Directory version 2.
  *
@@ -434,14 +421,6 @@ struct xfs_dir3_leaf_hdr {
 	__be32			pad;		/* 64 bit alignment */
 };
 
-struct xfs_dir3_icleaf_hdr {
-	uint32_t		forw;
-	uint32_t		back;
-	uint16_t		magic;
-	uint16_t		count;
-	uint16_t		stale;
-};
-
 /*
  * Leaf block entry.
  */
@@ -520,19 +499,6 @@ struct xfs_dir3_free {
 
 #define XFS_DIR3_FREE_CRC_OFF  offsetof(struct xfs_dir3_free, hdr.hdr.crc)
 
-/*
- * In core version of the free block header, abstracted away from on-disk format
- * differences. Use this in the code, and convert to/from the disk version using
- * xfs_dir3_free_hdr_from_disk/xfs_dir3_free_hdr_to_disk.
- */
-struct xfs_dir3_icfree_hdr {
-	uint32_t	magic;
-	uint32_t	firstdb;
-	uint32_t	nvalid;
-	uint32_t	nused;
-
-};
-
 /*
  * Single block format.
  *
@@ -709,29 +675,6 @@ struct xfs_attr3_leafblock {
 	 */
 };
 
-/*
- * incore, neutral version of the attribute leaf header
- */
-struct xfs_attr3_icleaf_hdr {
-	uint32_t	forw;
-	uint32_t	back;
-	uint16_t	magic;
-	uint16_t	count;
-	uint16_t	usedbytes;
-	/*
-	 * firstused is 32-bit here instead of 16-bit like the on-disk variant
-	 * to support maximum fsb size of 64k without overflow issues throughout
-	 * the attr code. Instead, the overflow condition is handled on
-	 * conversion to/from disk.
-	 */
-	uint32_t	firstused;
-	__u8		holes;
-	struct {
-		uint16_t	base;
-		uint16_t	size;
-	} freemap[XFS_ATTR_LEAF_MAPSIZE];
-};
-
 /*
  * Special value to represent fs block size in the leaf header firstused field.
  * Only used when block size overflows the 2-bytes available on disk.
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index f54244779492..e170792c0acc 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -18,6 +18,8 @@ struct xfs_dir2_sf_entry;
 struct xfs_dir2_data_hdr;
 struct xfs_dir2_data_entry;
 struct xfs_dir2_data_unused;
+struct xfs_dir3_icfree_hdr;
+struct xfs_dir3_icleaf_hdr;
 
 extern struct xfs_name	xfs_name_dotdot;
 
diff --git a/fs/xfs/libxfs/xfs_dir2_priv.h b/fs/xfs/libxfs/xfs_dir2_priv.h
index 59f9fb2241a5..d2eaea663e7f 100644
--- a/fs/xfs/libxfs/xfs_dir2_priv.h
+++ b/fs/xfs/libxfs/xfs_dir2_priv.h
@@ -8,6 +8,25 @@
 
 struct dir_context;
 
+/*
+ * In-core version of the leaf and free block headers to abstract the
+ * differences in the v2 and v3 disk format of the headers.
+ */
+struct xfs_dir3_icleaf_hdr {
+	uint32_t		forw;
+	uint32_t		back;
+	uint16_t		magic;
+	uint16_t		count;
+	uint16_t		stale;
+};
+
+struct xfs_dir3_icfree_hdr {
+	uint32_t		magic;
+	uint32_t		firstdb;
+	uint32_t		nvalid;
+	uint32_t		nused;
+};
+
 /* xfs_dir2.c */
 extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
 				xfs_dir2_db_t *dbp);
-- 
2.20.1