[GFS2] split and annotate gfs2_meta_header

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/ondisk.c

@@ -54,7 +54,7 @@ static void gfs2_inum_print(const struct gfs2_inum *no)
 	printk(KERN_INFO "  no_addr = %llu\n", (unsigned long long)no->no_addr);
 }
 
-static void gfs2_meta_header_in(struct gfs2_meta_header *mh, const void *buf)
+static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf)
 {
 	const struct gfs2_meta_header *str = buf;
 
@@ -63,7 +63,7 @@ static void gfs2_meta_header_in(struct gfs2_meta_header *mh, const void *buf)
 	mh->mh_format = be32_to_cpu(str->mh_format);
 }
 
-static void gfs2_meta_header_out(const struct gfs2_meta_header *mh, void *buf)
+static void gfs2_meta_header_out(const struct gfs2_meta_header_host *mh, void *buf)
 {
 	struct gfs2_meta_header *str = buf;
 
@@ -72,7 +72,7 @@ static void gfs2_meta_header_out(const struct gfs2_meta_header *mh, void *buf)
 	str->mh_format = cpu_to_be32(mh->mh_format);
 }
 
-static void gfs2_meta_header_print(const struct gfs2_meta_header *mh)
+static void gfs2_meta_header_print(const struct gfs2_meta_header_host *mh)
 {
 	pv(mh, mh_magic, "0x%.8X");
 	pv(mh, mh_type, "%u");

include/linux/gfs2_ondisk.h

@@ -89,6 +89,12 @@ struct gfs2_meta_header {
 	__be32 __pad1;		/* Was incarnation number in gfs1 */
 };
 
+struct gfs2_meta_header_host {
+	__u32 mh_magic;
+	__u32 mh_type;
+	__u32 mh_format;
+};
+
 /*
  * super-block structure
  *
@@ -129,7 +135,7 @@ struct gfs2_sb {
 };
 
 struct gfs2_sb_host {
-	struct gfs2_meta_header sb_header;
+	struct gfs2_meta_header_host sb_header;
 
 	__u32 sb_fs_format;
 	__u32 sb_multihost_format;
@@ -194,7 +200,7 @@ struct gfs2_rgrp {
 };
 
 struct gfs2_rgrp_host {
-	struct gfs2_meta_header rg_header;
+	struct gfs2_meta_header_host rg_header;
 
 	__u32 rg_flags;
 	__u32 rg_free;
@@ -297,7 +303,7 @@ struct gfs2_dinode {
 };
 
 struct gfs2_dinode_host {
-	struct gfs2_meta_header di_header;
+	struct gfs2_meta_header_host di_header;
 
 	struct gfs2_inum di_num;
 
@@ -406,7 +412,7 @@ struct gfs2_log_header {
 };
 
 struct gfs2_log_header_host {
-	struct gfs2_meta_header lh_header;
+	struct gfs2_meta_header_host lh_header;
 
 	__u64 lh_sequence;	/* Sequence number of this transaction */
 	__u32 lh_flags;	/* GFS2_LOG_HEAD_... */