[GFS] Fix bug in endian conversion for metadata header

In some cases 16 bit functions were being used rather than 32 bit
functions.
Signed-off-by: NSteven Whitehouse <swhiteho@redhat.com>

fs/gfs2/dir.c

@@ -462,7 +462,7 @@ static int gfs2_dirent_offset(const void *buf)
 
 	BUG_ON(buf == NULL);
 
-	switch(be16_to_cpu(h->mh_type)) {
+	switch(be32_to_cpu(h->mh_type)) {
 	case GFS2_METATYPE_LF:
 		offset = sizeof(struct gfs2_leaf);
 		break;
@@ -475,7 +475,7 @@ static int gfs2_dirent_offset(const void *buf)
 	return offset;
 wrong_type:
 	printk(KERN_WARNING "gfs2_scan_dirent: wrong block type %u\n",
-	       be16_to_cpu(h->mh_type));
+	       be32_to_cpu(h->mh_type));
 	return -1;
 }
 
@@ -548,7 +548,7 @@ static int dirent_first(struct gfs2_inode *dip, struct buffer_head *bh,
 {
 	struct gfs2_meta_header *h = (struct gfs2_meta_header *)bh->b_data;
 
-	if (be16_to_cpu(h->mh_type) == GFS2_METATYPE_LF) {
+	if (be32_to_cpu(h->mh_type) == GFS2_METATYPE_LF) {
 		if (gfs2_meta_check(dip->i_sbd, bh))
 			return -EIO;
 		*dent = (struct gfs2_dirent *)(bh->b_data +

fs/gfs2/log.c

@@ -377,8 +377,8 @@ static void log_write_header(struct gfs2_sbd *sdp, uint32_t flags, int pull)
 	lh = (struct gfs2_log_header *)bh->b_data;
 	memset(lh, 0, sizeof(struct gfs2_log_header));
 	lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
-	lh->lh_header.mh_type = cpu_to_be16(GFS2_METATYPE_LH);
-	lh->lh_header.mh_format = cpu_to_be16(GFS2_FORMAT_LH);
+	lh->lh_header.mh_type = cpu_to_be32(GFS2_METATYPE_LH);
+	lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH);
 	lh->lh_sequence = be64_to_cpu(sdp->sd_log_sequence++);
 	lh->lh_flags = be32_to_cpu(flags);
 	lh->lh_tail = be32_to_cpu(tail);

fs/gfs2/lops.c

@@ -133,8 +133,8 @@ static void buf_lo_before_commit(struct gfs2_sbd *sdp)
 		ld = (struct gfs2_log_descriptor *)bh->b_data;
 		ptr = (__be64 *)(bh->b_data + offset);
 		ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
-		ld->ld_header.mh_type = cpu_to_be16(GFS2_METATYPE_LD);
-		ld->ld_header.mh_format = cpu_to_be16(GFS2_FORMAT_LD);
+		ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
+		ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
 		ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA);
 		ld->ld_length = cpu_to_be32(num + 1);
 		ld->ld_data1 = cpu_to_be32(num);
@@ -291,8 +291,8 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
 	bh = gfs2_log_get_buf(sdp);
 	ld = (struct gfs2_log_descriptor *)bh->b_data;
 	ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
-	ld->ld_header.mh_type = cpu_to_be16(GFS2_METATYPE_LD);
-	ld->ld_header.mh_format = cpu_to_be16(GFS2_FORMAT_LD);
+	ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
+	ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
 	ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE);
 	ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
 						    sizeof(uint64_t)));
@@ -313,8 +313,8 @@ static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
 			bh = gfs2_log_get_buf(sdp);
 			mh = (struct gfs2_meta_header *)bh->b_data;
 			mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
-			mh->mh_type = cpu_to_be16(GFS2_METATYPE_LB);
-			mh->mh_format = cpu_to_be16(GFS2_FORMAT_LB);
+			mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
+			mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
 			offset = sizeof(struct gfs2_meta_header);
 		}
 
@@ -576,9 +576,9 @@ static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
 					ld->ld_header.mh_magic =
 						cpu_to_be32(GFS2_MAGIC);
 					ld->ld_header.mh_type =
-						cpu_to_be16(GFS2_METATYPE_LD);
+						cpu_to_be32(GFS2_METATYPE_LD);
 					ld->ld_header.mh_format =
-						cpu_to_be16(GFS2_FORMAT_LD);
+						cpu_to_be32(GFS2_FORMAT_LD);
 					ld->ld_type =
 						cpu_to_be32(GFS2_LOG_DESC_JDATA);
 					ld->ld_length = cpu_to_be32(num + 1);

fs/gfs2/ondisk.c

@@ -83,8 +83,8 @@ static void gfs2_meta_header_in(struct gfs2_meta_header *mh, char *buf)
 	struct gfs2_meta_header *str = (struct gfs2_meta_header *)buf;
 
 	mh->mh_magic = be32_to_cpu(str->mh_magic);
-	mh->mh_type = be16_to_cpu(str->mh_type);
-	mh->mh_format = be16_to_cpu(str->mh_format);
+	mh->mh_type = be32_to_cpu(str->mh_type);
+	mh->mh_format = be32_to_cpu(str->mh_format);
 }
 
 static void gfs2_meta_header_out(struct gfs2_meta_header *mh, char *buf)
@@ -92,8 +92,8 @@ static void gfs2_meta_header_out(struct gfs2_meta_header *mh, char *buf)
 	struct gfs2_meta_header *str = (struct gfs2_meta_header *)buf;
 
 	str->mh_magic = cpu_to_be32(mh->mh_magic);
-	str->mh_type = cpu_to_be16(mh->mh_type);
-	str->mh_format = cpu_to_be16(mh->mh_format);
+	str->mh_type = cpu_to_be32(mh->mh_type);
+	str->mh_format = cpu_to_be32(mh->mh_format);
 }
 
 void gfs2_meta_header_print(struct gfs2_meta_header *mh)

fs/gfs2/recovery.c

@@ -324,7 +324,7 @@ static int foreach_descriptor(struct gfs2_jdesc *jd, unsigned int start,
 		ld = (struct gfs2_log_descriptor *)bh->b_data;
 		length = be32_to_cpu(ld->ld_length);
 
-		if (be16_to_cpu(ld->ld_header.mh_type) == GFS2_METATYPE_LH) {
+		if (be32_to_cpu(ld->ld_header.mh_type) == GFS2_METATYPE_LH) {
 			struct gfs2_log_header lh;
 			error = get_log_header(jd, start, &lh);
 			if (!error) {
@@ -400,7 +400,7 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header *head)
 	memset(lh, 0, sizeof(struct gfs2_log_header));
 	lh->lh_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
 	lh->lh_header.mh_type = cpu_to_be16(GFS2_METATYPE_LH);
-	lh->lh_header.mh_format = cpu_to_be16(GFS2_FORMAT_LH);
+	lh->lh_header.mh_format = cpu_to_be32(GFS2_FORMAT_LH);
 	lh->lh_sequence = cpu_to_be64(head->lh_sequence + 1);
 	lh->lh_flags = cpu_to_be32(GFS2_LOG_HEAD_UNMOUNT);
 	lh->lh_blkno = cpu_to_be32(lblock);

fs/gfs2/util.h

@@ -107,12 +107,11 @@ static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 {
 	struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 	uint32_t magic = mh->mh_magic;
-	uint16_t t = mh->mh_type;
+	uint16_t t = be32_to_cpu(mh->mh_type);
 	magic = be32_to_cpu(magic);
 	if (unlikely(magic != GFS2_MAGIC))
 		return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 					  file, line);
-	t = be16_to_cpu(t);
         if (unlikely(t != type))
 		return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 					      file, line);
@@ -127,8 +126,8 @@ static inline void gfs2_metatype_set(struct buffer_head *bh, uint16_t type,
 {
 	struct gfs2_meta_header *mh;
 	mh = (struct gfs2_meta_header *)bh->b_data;
-	mh->mh_type = cpu_to_be16(type);
-	mh->mh_format = cpu_to_be16(format);
+	mh->mh_type = cpu_to_be32(type);
+	mh->mh_format = cpu_to_be32(format);
 }