xfs: create a shared header file for format-related information

All of the buffer operations structures are needed to be exported
for xfs_db, so move them all to a common location rather than
spreading them all over the place. They are verifying the on-disk
format, so while xfs_format.h might be a good place, it is not part
of the on disk format.

Hence we need to create a new header file that we centralise these
related definitions. Start by moving the bffer operations
structures, and then also move all the other definitions that have
crept into xfs_log_format.h and xfs_format.h as there was no other
shared header file to put them in.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>

fs/xfs/xfs_ag.h

@@ -128,8 +128,6 @@ typedef struct xfs_agf {
 extern int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
 			xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
 
-extern const struct xfs_buf_ops xfs_agf_buf_ops;
-
 /*
  * Size of the unlinked inode hash table in the agi.
  */
@@ -191,8 +189,6 @@ typedef struct xfs_agi {
 extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
 				xfs_agnumber_t agno, struct xfs_buf **bpp);
 
-extern const struct xfs_buf_ops xfs_agi_buf_ops;
-
 /*
  * The third a.g. block contains the a.g. freelist, an array
  * of block pointers to blocks owned by the allocation btree code.

fs/xfs/xfs_alloc.c

@@ -17,7 +17,8 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_alloc.h

@@ -231,7 +231,4 @@ xfs_alloc_get_rec(
 	xfs_extlen_t		*len,	/* output: length of extent */
 	int			*stat);	/* output: success/failure */
 
-extern const struct xfs_buf_ops xfs_agf_buf_ops;
-extern const struct xfs_buf_ops xfs_agfl_buf_ops;
-
 #endif	/* __XFS_ALLOC_H__ */

fs/xfs/xfs_alloc_btree.h

@@ -95,6 +95,4 @@ extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *,
 		xfs_agnumber_t, xfs_btnum_t);
 extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int);
 
-extern const struct xfs_buf_ops xfs_allocbt_buf_ops;
-
 #endif	/* __XFS_ALLOC_BTREE_H__ */

fs/xfs/xfs_aops.c

@@ -16,9 +16,11 @@
  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 #include "xfs.h"
-#include "xfs_log.h"
+#include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
+#include "xfs_log.h"
 #include "xfs_trans.h"
 #include "xfs_mount.h"
 #include "xfs_bmap_btree.h"

fs/xfs/xfs_attr.c

@@ -18,6 +18,7 @@
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_attr_inactive.c

@@ -19,6 +19,7 @@
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_attr_leaf.h

@@ -336,6 +336,4 @@ void	xfs_attr3_leaf_hdr_from_disk(struct xfs_attr3_icleaf_hdr *to,
 void	xfs_attr3_leaf_hdr_to_disk(struct xfs_attr_leafblock *to,
 				   struct xfs_attr3_icleaf_hdr *from);
 
-extern const struct xfs_buf_ops xfs_attr3_leaf_buf_ops;
-
 #endif	/* __XFS_ATTR_LEAF_H__ */

fs/xfs/xfs_attr_remote.h

@@ -45,8 +45,6 @@ struct xfs_attr3_rmt_hdr {
 	((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
 			sizeof(struct xfs_attr3_rmt_hdr) : 0))
 
-extern const struct xfs_buf_ops xfs_attr3_rmt_buf_ops;
-
 int xfs_attr3_rmt_blocks(struct xfs_mount *mp, int attrlen);
 
 int xfs_attr_rmtval_get(struct xfs_da_args *args);

fs/xfs/xfs_bmap.c

@@ -18,6 +18,7 @@
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_inum.h"

fs/xfs/xfs_bmap_btree.h

@@ -243,6 +243,4 @@ extern int xfs_bmbt_change_owner(struct xfs_trans *tp, struct xfs_inode *ip,
 extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
 		struct xfs_trans *, struct xfs_inode *, int);
 
-extern const struct xfs_buf_ops xfs_bmbt_buf_ops;
-
 #endif	/* __XFS_BMAP_BTREE_H__ */

fs/xfs/xfs_bmap_util.c

@@ -19,6 +19,7 @@
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_inum.h"

fs/xfs/xfs_btree.c

@@ -17,7 +17,7 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_da_btree.c

@@ -18,7 +18,8 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_da_btree.h

@@ -309,8 +309,6 @@ int	xfs_da3_node_read(struct xfs_trans *tp, struct xfs_inode *dp,
 			 xfs_dablk_t bno, xfs_daddr_t mappedbno,
 			 struct xfs_buf **bpp, int which_fork);
 
-extern const struct xfs_buf_ops xfs_da3_node_buf_ops;
-
 /*
  * Utility routines.
  */

fs/xfs/xfs_dquot.c

@@ -18,6 +18,7 @@
 #include "xfs.h"
 #include "xfs_fs.h"
 #include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"

fs/xfs/xfs_dquot.h

@@ -172,6 +172,4 @@ static inline struct xfs_dquot *xfs_qm_dqhold(struct xfs_dquot *dqp)
 	return dqp;
 }
 
-extern const struct xfs_buf_ops xfs_dquot_buf_ops;
-
 #endif /* __XFS_DQUOT_H__ */

fs/xfs/xfs_extent_busy.c

@@ -19,7 +19,8 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_format.h"
+#include "xfs_shared.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"
 #include "xfs_sb.h"

fs/xfs/xfs_file.c

@@ -17,6 +17,7 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
+#include "xfs_shared.h"
 #include "xfs_log.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"

fs/xfs/xfs_format.h

@@ -156,14 +156,4 @@ struct xfs_dsymlink_hdr {
 	((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \
 			sizeof(struct xfs_dsymlink_hdr) : 0))
 
-int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen);
-int xfs_symlink_hdr_set(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
-			uint32_t size, struct xfs_buf *bp);
-bool xfs_symlink_hdr_ok(struct xfs_mount *mp, xfs_ino_t ino, uint32_t offset,
-			uint32_t size, struct xfs_buf *bp);
-void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp,
-				 struct xfs_inode *ip, struct xfs_ifork *ifp);
-
-extern const struct xfs_buf_ops xfs_symlink_buf_ops;
-
 #endif /* __XFS_FORMAT_H__ */