[XFS] resync headers with libxfs

- xfs_sb.h add the XFS_SB_VERSION2_PARENTBIT features2 that has been
   around in userspace for some time
 - xfs_inode.h: move a few things out of __KERNEL__ that are needed by
   userspace
 - xfs_mount.h: only include xfs_sync.h under __KERNEL__
 - xfs_inode.c: minor whitespace fixup.  I accidentaly changes this when
   importing this file for use by userspace.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

fs/xfs/xfs_inode.c

@@ -870,7 +870,7 @@ xfs_iread(
 	 * around for a while.  This helps to keep recently accessed
 	 * meta-data in-core longer.
 	 */
-	 XFS_BUF_SET_REF(bp, XFS_INO_REF);
+	XFS_BUF_SET_REF(bp, XFS_INO_REF);
 
 	/*
 	 * Use xfs_trans_brelse() to release the buffer containing the

fs/xfs/xfs_inode.h

@@ -481,12 +481,6 @@ static inline void xfs_ifunlock(xfs_inode_t *ip)
 	(((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
 	 ((pip)->i_d.di_mode & S_ISGID))
 
-/*
- * Flags for xfs_iget()
- */
-#define XFS_IGET_CREATE		0x1
-#define XFS_IGET_BULKSTAT	0x2
-
 /*
  * xfs_iget.c prototypes.
  */
@@ -508,8 +502,6 @@ void		xfs_ireclaim(xfs_inode_t *);
 /*
  * xfs_inode.c prototypes.
  */
-int		xfs_iread(struct xfs_mount *, struct xfs_trans *,
-			  struct xfs_inode *, xfs_daddr_t, uint);
 int		xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
 			   xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
 			   int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
@@ -582,12 +574,20 @@ do { \
 
 #endif /* __KERNEL__ */
 
+/*
+ * Flags for xfs_iget()
+ */
+#define XFS_IGET_CREATE		0x1
+#define XFS_IGET_BULKSTAT	0x2
+
 int		xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
 			    xfs_ino_t, struct xfs_dinode **,
 			    struct xfs_buf **, int *, uint);
 int		xfs_itobp(struct xfs_mount *, struct xfs_trans *,
 			  struct xfs_inode *, struct xfs_dinode **,
 			  struct xfs_buf **, uint);
+int		xfs_iread(struct xfs_mount *, struct xfs_trans *,
+			  struct xfs_inode *, xfs_daddr_t, uint);
 void		xfs_dinode_from_disk(struct xfs_icdinode *,
 				     struct xfs_dinode *);
 void		xfs_dinode_to_disk(struct xfs_dinode *,

fs/xfs/xfs_mount.h

@@ -18,8 +18,6 @@
 #ifndef __XFS_MOUNT_H__
 #define	__XFS_MOUNT_H__
 
-#include "xfs_sync.h"
-
 typedef struct xfs_trans_reservations {
 	uint	tr_write;	/* extent alloc trans */
 	uint	tr_itruncate;	/* truncate trans */
@@ -53,6 +51,8 @@ typedef struct xfs_trans_reservations {
 
 #else /* __KERNEL__ */
 
+#include "xfs_sync.h"
+
 struct cred;
 struct log;
 struct xfs_mount_args;

fs/xfs/xfs_sb.h

@@ -79,6 +79,7 @@ struct xfs_mount;
 #define XFS_SB_VERSION2_LAZYSBCOUNTBIT	0x00000002	/* Superblk counters */
 #define XFS_SB_VERSION2_RESERVED4BIT	0x00000004
 #define XFS_SB_VERSION2_ATTR2BIT	0x00000008	/* Inline attr rework */
+#define XFS_SB_VERSION2_PARENTBIT	0x00000010	/* parent pointers */
 
 #define	XFS_SB_VERSION2_OKREALFBITS	\
 	(XFS_SB_VERSION2_LAZYSBCOUNTBIT	| \