gfs2: Turn gfs2_meta_indirect_buffer into gfs2_meta_buffer

Instead of only supporting GFS2_METATYPE_DI and GFS2_METATYPE_IN blocks,
make the block type a parameter of gfs2_meta_indirect_buffer and rename
the function to gfs2_meta_buffer.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/bmap.c

@@ -331,7 +331,7 @@ static int __fillup_metapath(struct gfs2_inode *ip, struct metapath *mp,
 
 		if (!dblock)
 			break;
-		ret = gfs2_meta_indirect_buffer(ip, x + 1, dblock, &mp->mp_bh[x + 1]);
+		ret = gfs2_meta_buffer(ip, GFS2_METATYPE_IN, dblock, &mp->mp_bh[x + 1]);
 		if (ret)
 			return ret;
 	}

fs/gfs2/meta_io.c

@@ -466,23 +466,22 @@ void gfs2_journal_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen)
 }
 
 /**
- * gfs2_meta_indirect_buffer - Get a metadata buffer
+ * gfs2_meta_buffer - Get a metadata buffer
  * @ip: The GFS2 inode
- * @height: The level of this buf in the metadata (indir addr) tree (if any)
+ * @mtype: The block type (GFS2_METATYPE_*)
  * @num: The block number (device relative) of the buffer
  * @bhp: the buffer is returned here
  *
  * Returns: errno
  */
 
-int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
-			      struct buffer_head **bhp)
+int gfs2_meta_buffer(struct gfs2_inode *ip, u32 mtype, u64 num,
+		     struct buffer_head **bhp)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_glock *gl = ip->i_gl;
 	struct buffer_head *bh;
 	int ret = 0;
-	u32 mtype = height ? GFS2_METATYPE_IN : GFS2_METATYPE_DI;
 	int rahead = 0;
 
 	if (num == ip->i_no_addr)

fs/gfs2/meta_io.h

@@ -61,13 +61,13 @@ enum {
 
 extern void gfs2_remove_from_journal(struct buffer_head *bh, int meta);
 extern void gfs2_journal_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen);
-extern int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
-				     struct buffer_head **bhp);
+extern int gfs2_meta_buffer(struct gfs2_inode *ip, u32 mtype, u64 num,
+			    struct buffer_head **bhp);
 
 static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
 					 struct buffer_head **bhp)
 {
-	return gfs2_meta_indirect_buffer(ip, 0, ip->i_no_addr, bhp);
+	return gfs2_meta_buffer(ip, GFS2_METATYPE_DI, ip->i_no_addr, bhp);
 }
 
 struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);