xfs: clean up xfs_fsops.h

Use struct types instead of typedefs so that the header can be included
with pulling in the headers that define the typedefs, and remove the
pointless externs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

fs/xfs/xfs_fsops.h

@@ -6,12 +6,12 @@
 #ifndef __XFS_FSOPS_H__
 #define	__XFS_FSOPS_H__
 
-extern int xfs_growfs_data(struct xfs_mount *mp, struct xfs_growfs_data *in);
-extern int xfs_growfs_log(struct xfs_mount *mp, struct xfs_growfs_log *in);
+int xfs_growfs_data(struct xfs_mount *mp, struct xfs_growfs_data *in);
+int xfs_growfs_log(struct xfs_mount *mp, struct xfs_growfs_log *in);
 int xfs_reserve_blocks(struct xfs_mount *mp, uint64_t request);
-extern int xfs_fs_goingdown(xfs_mount_t *mp, uint32_t inflags);
+int xfs_fs_goingdown(struct xfs_mount *mp, uint32_t inflags);
 
-extern int xfs_fs_reserve_ag_blocks(struct xfs_mount *mp);
-extern int xfs_fs_unreserve_ag_blocks(struct xfs_mount *mp);
+int xfs_fs_reserve_ag_blocks(struct xfs_mount *mp);
+int xfs_fs_unreserve_ag_blocks(struct xfs_mount *mp);
 
 #endif	/* __XFS_FSOPS_H__ */