diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index f4c48395208a0be24e14ebf99a2d688d71bc176d..22ca3b5ddaea06c30322dc3084b7af9ac3e10ae5 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -38,15 +38,17 @@
 #include "util.h"
 
 /**
- * inode_attr_in - Copy attributes from the dinode into the VFS inode
+ * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode
  * @ip: The GFS2 inode (with embedded disk inode data)
  * @inode:  The Linux VFS inode
  *
  */
 
-static void inode_attr_in(struct gfs2_inode *ip, struct inode *inode)
+void gfs2_inode_attr_in(struct gfs2_inode *ip)
 {
-	inode->i_ino = ip->i_num.no_formal_ino;
+	struct inode *inode = &ip->i_inode;
+
+	inode->i_ino = ip->i_num.no_addr;
 
 	switch (ip->i_di.di_mode & S_IFMT) {
 	case S_IFBLK:
@@ -84,18 +86,6 @@ static void inode_attr_in(struct gfs2_inode *ip, struct inode *inode)
 		inode->i_flags &= ~S_APPEND;
 }
 
-/**
- * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode
- * @ip: The GFS2 inode (with embedded disk inode data)
- *
- */
-
-void gfs2_inode_attr_in(struct gfs2_inode *ip)
-{
-	struct inode *inode = &ip->i_inode;
-	inode_attr_in(ip, inode);
-}
-
 /**
  * gfs2_inode_attr_out - Copy attributes from VFS inode into the dinode
  * @ip: The GFS2 inode
@@ -621,7 +611,8 @@ static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
 		*gid = current->fsgid;
 }
 
-static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum)
+static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum,
+			u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	int error;
@@ -637,14 +628,14 @@ static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum)
 	if (error)
 		goto out_ipreserv;
 
-	inum->no_addr = gfs2_alloc_di(dip);
+	inum->no_addr = gfs2_alloc_di(dip, generation);
 
 	gfs2_trans_end(sdp);
 
- out_ipreserv:
+out_ipreserv:
 	gfs2_inplace_release(dip);
 
- out:
+out:
 	gfs2_alloc_put(dip);
 
 	return error;
@@ -662,8 +653,9 @@ static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum *inum)
  */
 
 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
-			struct gfs2_inum *inum, unsigned int mode,
-			unsigned int uid, unsigned int gid)
+			const struct gfs2_inum *inum, unsigned int mode,
+			unsigned int uid, unsigned int gid,
+			const u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	struct gfs2_dinode *di;
@@ -686,7 +678,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
 	di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds());
 	di->di_major = di->di_minor = cpu_to_be32(0);
 	di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
-	di->__pad[0] = di->__pad[1] = 0;
+	di->di_generation = cpu_to_be64(*generation);
 	di->di_flags = cpu_to_be32(0);
 
 	if (S_ISREG(mode)) {
@@ -717,7 +709,8 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
 }
 
 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
-		       unsigned int mode, struct gfs2_inum *inum)
+		       unsigned int mode, const struct gfs2_inum *inum,
+		       const u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	unsigned int uid, gid;
@@ -738,7 +731,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
 	if (error)
 		goto out_quota;
 
-	init_dinode(dip, gl, inum, mode, uid, gid);
+	init_dinode(dip, gl, inum, mode, uid, gid, generation);
 	gfs2_quota_change(dip, +1, uid, gid);
 	gfs2_trans_end(sdp);
 
@@ -844,6 +837,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	struct gfs2_inum inum;
 	int error;
+	u64 generation;
 
 	if (!name->len || name->len > GFS2_FNAMESIZE)
 		return ERR_PTR(-ENAMETOOLONG);
@@ -861,7 +855,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 	if (error)
 		goto fail_gunlock;
 
-	error = alloc_dinode(dip, &inum);
+	error = alloc_dinode(dip, &inum, &generation);
 	if (error)
 		goto fail_gunlock;
 
@@ -893,7 +887,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 			goto fail_gunlock;
 	}
 
-	error = make_dinode(dip, ghs[1].gh_gl, mode, &inum);
+	error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation);
 	if (error)
 		goto fail_gunlock2;
 
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index ddcd4dc1081d53437a79a146fb243d594df025c6..cad44fd70d67b832d165637d9c47705d42dda6f3 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -31,6 +31,7 @@
 #include "rgrp.h"
 #include "trans.h"
 #include "util.h"
+#include "ops_address.h"
 
 #define buffer_busy(bh) \
 ((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
@@ -50,118 +51,9 @@ static int gfs2_aspace_writepage(struct page *page,
 	return block_write_full_page(page, aspace_get_block, wbc);
 }
 
-/**
- * stuck_releasepage - We're stuck in gfs2_releasepage().  Print stuff out.
- * @bh: the buffer we're stuck on
- *
- */
-
-static void stuck_releasepage(struct buffer_head *bh)
-{
-	struct inode *inode = bh->b_page->mapping->host;
-	struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
-	struct gfs2_bufdata *bd = bh->b_private;
-	struct gfs2_glock *gl;
-
-	fs_warn(sdp, "stuck in gfs2_releasepage() %p\n", inode);
-	fs_warn(sdp, "blkno = %llu, bh->b_count = %d\n",
-		(unsigned long long)bh->b_blocknr, atomic_read(&bh->b_count));
-	fs_warn(sdp, "pinned = %u\n", buffer_pinned(bh));
-	fs_warn(sdp, "bh->b_private = %s\n", (bd) ? "!NULL" : "NULL");
-
-	if (!bd)
-		return;
-
-	gl = bd->bd_gl;
-
-	fs_warn(sdp, "gl = (%u, %llu)\n", 
-		gl->gl_name.ln_type, (unsigned long long)gl->gl_name.ln_number);
-
-	fs_warn(sdp, "bd_list_tr = %s, bd_le.le_list = %s\n",
-		(list_empty(&bd->bd_list_tr)) ? "no" : "yes",
-		(list_empty(&bd->bd_le.le_list)) ? "no" : "yes");
-
-	if (gl->gl_ops == &gfs2_inode_glops) {
-		struct gfs2_inode *ip = gl->gl_object;
-		unsigned int x;
-
-		if (!ip)
-			return;
-
-		fs_warn(sdp, "ip = %llu %llu\n",
-			(unsigned long long)ip->i_num.no_formal_ino,
-			(unsigned long long)ip->i_num.no_addr);
-
-		for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
-			fs_warn(sdp, "ip->i_cache[%u] = %s\n",
-				x, (ip->i_cache[x]) ? "!NULL" : "NULL");
-	}
-}
-
-/**
- * gfs2_aspace_releasepage - free the metadata associated with a page
- * @page: the page that's being released
- * @gfp_mask: passed from Linux VFS, ignored by us
- *
- * Call try_to_free_buffers() if the buffers in this page can be
- * released.
- *
- * Returns: 0
- */
-
-static int gfs2_aspace_releasepage(struct page *page, gfp_t gfp_mask)
-{
-	struct inode *aspace = page->mapping->host;
-	struct gfs2_sbd *sdp = aspace->i_sb->s_fs_info;
-	struct buffer_head *bh, *head;
-	struct gfs2_bufdata *bd;
-	unsigned long t;
-
-	if (!page_has_buffers(page))
-		goto out;
-
-	head = bh = page_buffers(page);
-	do {
-		t = jiffies;
-
-		while (atomic_read(&bh->b_count)) {
-			if (atomic_read(&aspace->i_writecount)) {
-				if (time_after_eq(jiffies, t +
-				    gfs2_tune_get(sdp, gt_stall_secs) * HZ)) {
-					stuck_releasepage(bh);
-					t = jiffies;
-				}
-
-				yield();
-				continue;
-			}
-
-			return 0;
-		}
-
-		gfs2_assert_warn(sdp, !buffer_pinned(bh));
-
-		bd = bh->b_private;
-		if (bd) {
-			gfs2_assert_warn(sdp, bd->bd_bh == bh);
-			gfs2_assert_warn(sdp, list_empty(&bd->bd_list_tr));
-			gfs2_assert_warn(sdp, list_empty(&bd->bd_le.le_list));
-			gfs2_assert_warn(sdp, !bd->bd_ail);
-			kmem_cache_free(gfs2_bufdata_cachep, bd);
-			bh->b_private = NULL;
-		}
-
-		bh = bh->b_this_page;
-	}
-	while (bh != head);
-
- out:
-	return try_to_free_buffers(page);
-}
-
 static const struct address_space_operations aspace_aops = {
 	.writepage = gfs2_aspace_writepage,
-	.releasepage = gfs2_aspace_releasepage,
+	.releasepage = gfs2_releasepage,
 };
 
 /**
diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c
index 09154ad7b2706b5c65d1810d7462df314b3b8d6f..39c7f0345fc6cdd2683932fc134abea45c5404d9 100644
--- a/fs/gfs2/ondisk.c
+++ b/fs/gfs2/ondisk.c
@@ -128,6 +128,7 @@ void gfs2_rgrp_in(struct gfs2_rgrp *rg, char *buf)
 	rg->rg_flags = be32_to_cpu(str->rg_flags);
 	rg->rg_free = be32_to_cpu(str->rg_free);
 	rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
+	rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
 }
 
 void gfs2_rgrp_out(struct gfs2_rgrp *rg, char *buf)
@@ -138,7 +139,8 @@ void gfs2_rgrp_out(struct gfs2_rgrp *rg, char *buf)
 	str->rg_flags = cpu_to_be32(rg->rg_flags);
 	str->rg_free = cpu_to_be32(rg->rg_free);
 	str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
-
+	str->__pad = cpu_to_be32(0);
+	str->rg_igeneration = cpu_to_be64(rg->rg_igeneration);
 	memset(&str->rg_reserved, 0, sizeof(str->rg_reserved));
 }
 
@@ -172,6 +174,7 @@ void gfs2_dinode_in(struct gfs2_dinode *di, char *buf)
 
 	di->di_goal_meta = be64_to_cpu(str->di_goal_meta);
 	di->di_goal_data = be64_to_cpu(str->di_goal_data);
+	di->di_generation = be64_to_cpu(str->di_generation);
 
 	di->di_flags = be32_to_cpu(str->di_flags);
 	di->di_payload_format = be32_to_cpu(str->di_payload_format);
@@ -205,6 +208,7 @@ void gfs2_dinode_out(struct gfs2_dinode *di, char *buf)
 
 	str->di_goal_meta = cpu_to_be64(di->di_goal_meta);
 	str->di_goal_data = cpu_to_be64(di->di_goal_data);
+	str->di_generation = cpu_to_be64(di->di_generation);
 
 	str->di_flags = cpu_to_be32(di->di_flags);
 	str->di_payload_format = cpu_to_be32(di->di_payload_format);
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 2c4ec5cf21ffebac2d30a4f36ec295d58645d4bc..031270ad55e2208768cf27cff5e5f40e924bccf7 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -33,6 +33,7 @@
 #include "rgrp.h"
 #include "ops_file.h"
 #include "util.h"
+#include "glops.h"
 
 /**
  * gfs2_get_block - Fills in a buffer head with details about a block
@@ -659,6 +660,115 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb,
 	return ret;
 }
 
+/**
+ * stuck_releasepage - We're stuck in gfs2_releasepage().  Print stuff out.
+ * @bh: the buffer we're stuck on
+ *
+ */
+
+static void stuck_releasepage(struct buffer_head *bh)
+{
+	struct inode *inode = bh->b_page->mapping->host;
+	struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
+	struct gfs2_bufdata *bd = bh->b_private;
+	struct gfs2_glock *gl;
+
+	fs_warn(sdp, "stuck in gfs2_releasepage() %p\n", inode);
+	fs_warn(sdp, "blkno = %llu, bh->b_count = %d\n",
+		(unsigned long long)bh->b_blocknr, atomic_read(&bh->b_count));
+	fs_warn(sdp, "pinned = %u\n", buffer_pinned(bh));
+	fs_warn(sdp, "bh->b_private = %s\n", (bd) ? "!NULL" : "NULL");
+
+	if (!bd)
+		return;
+
+	gl = bd->bd_gl;
+
+	fs_warn(sdp, "gl = (%u, %llu)\n", 
+		gl->gl_name.ln_type, (unsigned long long)gl->gl_name.ln_number);
+
+	fs_warn(sdp, "bd_list_tr = %s, bd_le.le_list = %s\n",
+		(list_empty(&bd->bd_list_tr)) ? "no" : "yes",
+		(list_empty(&bd->bd_le.le_list)) ? "no" : "yes");
+
+	if (gl->gl_ops == &gfs2_inode_glops) {
+		struct gfs2_inode *ip = gl->gl_object;
+		unsigned int x;
+
+		if (!ip)
+			return;
+
+		fs_warn(sdp, "ip = %llu %llu\n",
+			(unsigned long long)ip->i_num.no_formal_ino,
+			(unsigned long long)ip->i_num.no_addr);
+
+		for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
+			fs_warn(sdp, "ip->i_cache[%u] = %s\n",
+				x, (ip->i_cache[x]) ? "!NULL" : "NULL");
+	}
+}
+
+/**
+ * gfs2_aspace_releasepage - free the metadata associated with a page
+ * @page: the page that's being released
+ * @gfp_mask: passed from Linux VFS, ignored by us
+ *
+ * Call try_to_free_buffers() if the buffers in this page can be
+ * released.
+ *
+ * Returns: 0
+ */
+
+int gfs2_releasepage(struct page *page, gfp_t gfp_mask)
+{
+	struct inode *aspace = page->mapping->host;
+	struct gfs2_sbd *sdp = aspace->i_sb->s_fs_info;
+	struct buffer_head *bh, *head;
+	struct gfs2_bufdata *bd;
+	unsigned long t;
+
+	if (!page_has_buffers(page))
+		goto out;
+
+	head = bh = page_buffers(page);
+	do {
+		t = jiffies;
+
+		while (atomic_read(&bh->b_count)) {
+			if (atomic_read(&aspace->i_writecount)) {
+				if (time_after_eq(jiffies, t +
+				    gfs2_tune_get(sdp, gt_stall_secs) * HZ)) {
+					stuck_releasepage(bh);
+					t = jiffies;
+				}
+
+				yield();
+				continue;
+			}
+
+			return 0;
+		}
+
+		gfs2_assert_warn(sdp, !buffer_pinned(bh));
+
+		bd = bh->b_private;
+		if (bd) {
+			gfs2_assert_warn(sdp, bd->bd_bh == bh);
+			gfs2_assert_warn(sdp, list_empty(&bd->bd_list_tr));
+			gfs2_assert_warn(sdp, list_empty(&bd->bd_le.le_list));
+			gfs2_assert_warn(sdp, !bd->bd_ail);
+			kmem_cache_free(gfs2_bufdata_cachep, bd);
+			bh->b_private = NULL;
+		}
+
+		bh = bh->b_this_page;
+	}
+	while (bh != head);
+
+ out:
+	return try_to_free_buffers(page);
+}
+
 const struct address_space_operations gfs2_file_aops = {
 	.writepage = gfs2_writepage,
 	.readpage = gfs2_readpage,
@@ -668,6 +778,7 @@ const struct address_space_operations gfs2_file_aops = {
 	.commit_write = gfs2_commit_write,
 	.bmap = gfs2_bmap,
 	.invalidatepage = gfs2_invalidatepage,
+	.releasepage = gfs2_releasepage,
 	.direct_IO = gfs2_direct_IO,
 };
 
diff --git a/fs/gfs2/ops_address.h b/fs/gfs2/ops_address.h
index a7ef3bf36f3ebcfc327719d9fa844a7e0fe68c3e..dfc3dda6de11118cc67ba4c8d4f8b1bd61780d31 100644
--- a/fs/gfs2/ops_address.h
+++ b/fs/gfs2/ops_address.h
@@ -13,5 +13,6 @@
 extern const struct address_space_operations gfs2_file_aops;
 extern int gfs2_get_block(struct inode *inode, sector_t lblock,
 			  struct buffer_head *bh_result, int create);
+extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
 
 #endif /* __OPS_ADDRESS_DOT_H__ */
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index c8e2c98700a7155a93743e626ba3e8c2c7960192..26f1d3249b0fce0803a77a67337d27f1128d8dd2 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -333,7 +333,7 @@ static int filldir_reg_func(void *opaque, const char *name, unsigned int length,
 	int error;
 
 	error = fdr->fdr_filldir(fdr->fdr_opaque, name, length, offset,
-				 inum->no_formal_ino, type);
+				 inum->no_addr, type);
 	if (error)
 		return 1;
 
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 14c1f88bfb5d3e025e52ae8b27b2906d5c087fdc..65eea0b88bf7d858b54fef6095f12cdb5073e830 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1205,7 +1205,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, uint64_t bstart,
  * Returns: the allocated block
  */
 
-uint64_t gfs2_alloc_data(struct gfs2_inode *ip)
+u64 gfs2_alloc_data(struct gfs2_inode *ip)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al = &ip->i_alloc;
@@ -1249,7 +1249,7 @@ uint64_t gfs2_alloc_data(struct gfs2_inode *ip)
  * Returns: the allocated block
  */
 
-uint64_t gfs2_alloc_meta(struct gfs2_inode *ip)
+u64 gfs2_alloc_meta(struct gfs2_inode *ip)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al = &ip->i_alloc;
@@ -1294,13 +1294,13 @@ uint64_t gfs2_alloc_meta(struct gfs2_inode *ip)
  * Returns: the block allocated
  */
 
-uint64_t gfs2_alloc_di(struct gfs2_inode *dip)
+u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	struct gfs2_alloc *al = &dip->i_alloc;
 	struct gfs2_rgrpd *rgd = al->al_rgd;
-	uint32_t blk;
-	uint64_t block;
+	u32 blk;
+	u64 block;
 
 	blk = rgblk_search(rgd, rgd->rd_last_alloc_meta,
 			   GFS2_BLKST_FREE, GFS2_BLKST_DINODE);
@@ -1312,7 +1312,7 @@ uint64_t gfs2_alloc_di(struct gfs2_inode *dip)
 	gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free);
 	rgd->rd_rg.rg_free--;
 	rgd->rd_rg.rg_dinodes++;
-
+	*generation = rgd->rd_rg.rg_igeneration++;
 	gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
 	gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
 
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index 9c42d2252ddd2fcb780f3438962b89f5e91745ec..14600944d1843a62a64a002d07d4f2227882ff8f 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -37,9 +37,9 @@ void gfs2_inplace_release(struct gfs2_inode *ip);
 
 unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, uint64_t block);
 
-uint64_t gfs2_alloc_data(struct gfs2_inode *ip);
-uint64_t gfs2_alloc_meta(struct gfs2_inode *ip);
-uint64_t gfs2_alloc_di(struct gfs2_inode *ip);
+u64 gfs2_alloc_data(struct gfs2_inode *ip);
+u64 gfs2_alloc_meta(struct gfs2_inode *ip);
+u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
 
 void gfs2_free_data(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen);
 void gfs2_free_meta(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen);
diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h
index 1181da8319394e447496a999f2251965d7372c25..3ebd8743ce8c40deb3dc3bb1d462b4368f5f5eb1 100644
--- a/include/linux/gfs2_ondisk.h
+++ b/include/linux/gfs2_ondisk.h
@@ -170,8 +170,10 @@ struct gfs2_rgrp {
 	__be32 rg_flags;
 	__be32 rg_free;
 	__be32 rg_dinodes;
+	__be32 __pad;
+	__be64 rg_igeneration;
 
-	__u8 rg_reserved[92]; /* Several fields from gfs1 now reserved */
+	__u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
 };
 
 /*
@@ -248,7 +250,7 @@ struct gfs2_dinode {
 	 */
 	__be64 di_goal_meta;	/* rgrp to alloc from next */
 	__be64 di_goal_data;	/* data block goal */
-	__u32 __pad[2];
+	__be64 di_generation;	/* generation number for NFS */
 
 	__be32 di_flags;	/* GFS2_DIF_... */
 	__be32 di_payload_format;  /* GFS2_FORMAT_... */