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[Cluster-devel] [GFS2] Preview of inode numbering tidy patch



Hi,

Below is a preview of a patch to clean up the inode number handling
internal to GFS2. Its the first part of fixing Red Hat bz #236099 and
#201012. In the latter case its the fact that we are able to create
inodes in core with knowledge only of the disk block address that allows
us to fix that particular bug. The actual fixes for those bugs will be
in later patches.

I've tested this with postmark and it seems to be holding up ok. There
shouldn't really be a lot to go wrong, most of it is just changing
function arguments to more appropriate ones and then fixing up the
consequences of that.

Also this is a preview at the moment, rather than something I'm
intending to apply right away. When the other bits of the bug fixes are
done, then I'll add them as well,

Steve.

>From fae04268936ae5861c236cb9b2be12d7b57585d0 Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho redhat com>
Date: Tue, 8 May 2007 13:49:15 +0100
Subject: [PATCH] [GFS2] Tidy up inode numbering

This patch tidys up the inode numbering such that lookup now
take a single u64 argument which is the address of the block
on disk which it is required to look up. It also tidys up some
other code paths at the same time.

Signed-off-by: Steven Whitehouse <swhiteho redhat com>

diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index c53a5d2..e89b81a 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1044,7 +1044,7 @@ static int trunc_end(struct gfs2_inode *ip)
 		ip->i_di.di_height = 0;
 		ip->i_di.di_goal_meta =
 			ip->i_di.di_goal_data =
-			ip->i_num.no_addr;
+			ip->i_no_addr;
 		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
 	}
 	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME_SEC;
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index a96fa07..059d14a 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -1456,7 +1456,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
 		if (dip->i_di.di_entries != g.offset) {
 			fs_warn(sdp, "Number of entries corrupt in dir %llu, "
 				"ip->i_di.di_entries (%u) != g.offset (%u)\n",
-				(unsigned long long)dip->i_num.no_addr,
+				(unsigned long long)dip->i_no_addr,
 				dip->i_di.di_entries,
 				g.offset);
 			error = -EIO;
@@ -1488,24 +1488,53 @@ out:
  * Returns: errno
  */
 
-int gfs2_dir_search(struct inode *dir, const struct qstr *name,
-		    struct gfs2_inum_host *inum, unsigned int *type)
+struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name)
 {
 	struct buffer_head *bh;
 	struct gfs2_dirent *dent;
+	struct inode *inode;
+
+	dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh);
+	if (dent) {
+		if (IS_ERR(dent))
+			return ERR_PTR(PTR_ERR(dent));
+		inode = gfs2_inode_lookup(dir->i_sb,
+					  be64_to_cpu(dent->de_inum.no_addr),
+					  be16_to_cpu(dent->de_type));
+		brelse(bh);
+		return inode;
+	}
+	return ERR_PTR(-ENOENT);
+}
+
+int gfs2_dir_check(struct inode *dir, const struct qstr *name,
+		   const struct gfs2_inode *ip)
+{
+	struct buffer_head *bh;
+	struct gfs2_dirent *dent;
+	int ret = -ENOENT;
 
 	dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh);
 	if (dent) {
 		if (IS_ERR(dent))
 			return PTR_ERR(dent);
-		if (inum)
-			gfs2_inum_in(inum, (char *)&dent->de_inum);
-		if (type)
-			*type = be16_to_cpu(dent->de_type);
+		if (ip) {
+			if (be64_to_cpu(dent->de_inum.no_addr) != ip->i_no_addr)
+				goto out;
+			if (be64_to_cpu(dent->de_inum.no_formal_ino) !=
+			    ip->i_no_formal_ino)
+				goto out;
+			if (unlikely(IF2DT(ip->i_inode.i_mode) !=
+			    be16_to_cpu(dent->de_type))) {
+				gfs2_consist_inode(GFS2_I(dir));
+				ret = -EIO;
+			}
+		}
+		ret = 0;
+out:
 		brelse(bh);
-		return 0;
 	}
-	return -ENOENT;
+	return ret;
 }
 
 static int dir_new_leaf(struct inode *inode, const struct qstr *name)
@@ -1565,7 +1594,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
  */
 
 int gfs2_dir_add(struct inode *inode, const struct qstr *name,
-		 const struct gfs2_inum_host *inum, unsigned type)
+		 const struct gfs2_inode *nip, unsigned type)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct buffer_head *bh;
@@ -1580,7 +1609,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
 			if (IS_ERR(dent))
 				return PTR_ERR(dent);
 			dent = gfs2_init_dirent(inode, dent, name, bh);
-			gfs2_inum_out(inum, (char *)&dent->de_inum);
+			gfs2_inum_out(nip, dent);
 			dent->de_type = cpu_to_be16(type);
 			if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
 				leaf = (struct gfs2_leaf *)bh->b_data;
@@ -1700,7 +1729,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *name)
  */
 
 int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
-		   struct gfs2_inum_host *inum, unsigned int new_type)
+		   const struct gfs2_inode *nip, unsigned int new_type)
 {
 	struct buffer_head *bh;
 	struct gfs2_dirent *dent;
@@ -1715,7 +1744,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
 		return PTR_ERR(dent);
 
 	gfs2_trans_add_bh(dip->i_gl, bh, 1);
-	gfs2_inum_out(inum, (char *)&dent->de_inum);
+	gfs2_inum_out(nip, dent);
 	dent->de_type = cpu_to_be16(new_type);
 
 	if (dip->i_di.di_flags & GFS2_DIF_EXHASH) {
diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index 48fe890..8a468ca 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -16,15 +16,16 @@ struct inode;
 struct gfs2_inode;
 struct gfs2_inum;
 
-int gfs2_dir_search(struct inode *dir, const struct qstr *filename,
-		    struct gfs2_inum_host *inum, unsigned int *type);
+struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *filename);
+int gfs2_dir_check(struct inode *dir, const struct qstr *filename,
+		   const struct gfs2_inode *ip);
 int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
-		 const struct gfs2_inum_host *inum, unsigned int type);
+		 const struct gfs2_inode *ip, unsigned int type);
 int gfs2_dir_del(struct gfs2_inode *dip, const struct qstr *filename);
 int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
 		  filldir_t filldir);
 int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
-		   struct gfs2_inum_host *new_inum, unsigned int new_type);
+		   const struct gfs2_inode *nip, unsigned int new_type);
 
 int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip);
 
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 1815429..f915c29 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1823,7 +1823,7 @@ static int dump_inode(struct glock_iter *gi, struct gfs2_inode *ip)
 
 	print_dbg(gi, "  Inode:\n");
 	print_dbg(gi, "    num = %llu/%llu\n",
-		    ip->i_num.no_formal_ino, ip->i_num.no_addr);
+		    ip->i_no_formal_ino, ip->i_no_addr);
 	print_dbg(gi, "    type = %u\n", IF2DT(ip->i_inode.i_mode));
 	print_dbg(gi, "    i_flags =");
 	for (x = 0; x < 32; x++)
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index d995441..00c3004 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -213,8 +213,8 @@ enum {
 
 struct gfs2_inode {
 	struct inode i_inode;
-	struct gfs2_inum_host i_num;
-
+	u64 i_no_addr;
+	u64 i_no_formal_ino;
 	unsigned long i_flags;		/* GIF_... */
 
 	struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index df0b8b3..b1eb667 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -41,9 +41,9 @@
 static int iget_test(struct inode *inode, void *opaque)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_inum_host *inum = opaque;
+	u64 *no_addr= opaque;
 
-	if (ip->i_num.no_addr == inum->no_addr &&
+	if (ip->i_no_addr == *no_addr &&
 	    inode->i_private != NULL)
 		return 1;
 
@@ -53,37 +53,37 @@ static int iget_test(struct inode *inode, void *opaque)
 static int iget_set(struct inode *inode, void *opaque)
 {
 	struct gfs2_inode *ip = GFS2_I(inode);
-	struct gfs2_inum_host *inum = opaque;
+	u64 *no_addr = opaque;
 
-	ip->i_num = *inum;
-	inode->i_ino = inum->no_addr;
+	inode->i_ino = (unsigned long)*no_addr;
+	ip->i_no_addr = *no_addr;
 	return 0;
 }
 
-struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum)
+struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
 {
-	return ilookup5(sb, (unsigned long)inum->no_addr,
-			iget_test, inum);
+	unsigned long hash = (unsigned long)no_addr;
+	return ilookup5(sb, hash, iget_test, &no_addr);
 }
 
-static struct inode *gfs2_iget(struct super_block *sb, struct gfs2_inum_host *inum)
+static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
 {
-	return iget5_locked(sb, (unsigned long)inum->no_addr,
-		     iget_test, iget_set, inum);
+	unsigned long hash = (unsigned long)no_addr;
+	return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
 }
 
 /**
  * gfs2_inode_lookup - Lookup an inode
  * @sb: The super block
- * @inum: The inode number
+ * @no_addr: The inode number
  * @type: The type of the inode
  *
  * Returns: A VFS inode, or an error
  */
 
-struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned int type)
+struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned int type)
 {
-	struct inode *inode = gfs2_iget(sb, inum);
+	struct inode *inode = gfs2_iget(sb, no_addr);
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_glock *io_gl;
 	int error;
@@ -110,12 +110,12 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *i
 			inode->i_op = &gfs2_dev_iops;
 		}
 
-		error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
+		error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
 		if (unlikely(error))
 			goto fail;
 		ip->i_gl->gl_object = ip;
 
-		error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
+		error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
 		if (unlikely(error))
 			goto fail_put;
 
@@ -144,14 +144,12 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 	struct gfs2_dinode_host *di = &ip->i_di;
 	const struct gfs2_dinode *str = buf;
 
-	if (ip->i_num.no_addr != be64_to_cpu(str->di_num.no_addr)) {
+	if (ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)) {
 		if (gfs2_consist_inode(ip))
 			gfs2_dinode_print(ip);
 		return -EIO;
 	}
-	if (ip->i_num.no_formal_ino != be64_to_cpu(str->di_num.no_formal_ino))
-		return -ESTALE;
-
+	ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 	ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 	ip->i_inode.i_rdev = 0;
 	switch (ip->i_inode.i_mode & S_IFMT) {
@@ -247,7 +245,7 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
 	if (error)
 		goto out_qs;
 
-	rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+	rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
 	if (!rgd) {
 		gfs2_consist_inode(ip);
 		error = -EIO;
@@ -366,8 +364,6 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
 	struct super_block *sb = dir->i_sb;
 	struct gfs2_inode *dip = GFS2_I(dir);
 	struct gfs2_holder d_gh;
-	struct gfs2_inum_host inum;
-	unsigned int type;
 	int error;
 	struct inode *inode = NULL;
 	int unlock = 0;
@@ -395,12 +391,9 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
 			goto out;
 	}
 
-	error = gfs2_dir_search(dir, name, &inum, &type);
-	if (error)
-		goto out;
-
-	inode = gfs2_inode_lookup(sb, &inum, type);
-
+	inode = gfs2_dir_search(dir, name);
+	if (IS_ERR(inode))
+		error = PTR_ERR(inode);
 out:
 	if (unlock)
 		gfs2_glock_dq_uninit(&d_gh);
@@ -548,7 +541,7 @@ static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
 	if (!dip->i_inode.i_nlink)
 		return -EPERM;
 
-	error = gfs2_dir_search(&dip->i_inode, name, NULL, NULL);
+	error = gfs2_dir_check(&dip->i_inode, name, NULL);
 	switch (error) {
 	case -ENOENT:
 		error = 0;
@@ -588,8 +581,7 @@ 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_host *inum,
-			u64 *generation)
+static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	int error;
@@ -605,7 +597,7 @@ static int alloc_dinode(struct gfs2_inode *dip, struct gfs2_inum_host *inum,
 	if (error)
 		goto out_ipreserv;
 
-	inum->no_addr = gfs2_alloc_di(dip, generation);
+	*no_addr = gfs2_alloc_di(dip, generation);
 
 	gfs2_trans_end(sdp);
 
@@ -760,7 +752,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
 			goto fail_quota_locks;
 	}
 
-	error = gfs2_dir_add(&dip->i_inode, name, &ip->i_num, IF2DT(ip->i_inode.i_mode));
+	error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
 	if (error)
 		goto fail_end_trans;
 
@@ -864,7 +856,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 	if (error)
 		goto fail_gunlock;
 
-	error = alloc_dinode(dip, &inum, &generation);
+	error = alloc_dinode(dip, &inum.no_addr, &generation);
 	if (error)
 		goto fail_gunlock;
 
@@ -877,7 +869,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 	if (error)
 		goto fail_gunlock2;
 
-	inode = gfs2_inode_lookup(dir->i_sb, &inum, IF2DT(mode));
+	inode = gfs2_inode_lookup(dir->i_sb, inum.no_addr, IF2DT(mode));
 	if (IS_ERR(inode))
 		goto fail_gunlock2;
 
@@ -976,10 +968,8 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
  */
 
 int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
-		   struct gfs2_inode *ip)
+		   const struct gfs2_inode *ip)
 {
-	struct gfs2_inum_host inum;
-	unsigned int type;
 	int error;
 
 	if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode))
@@ -997,18 +987,10 @@ int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
 	if (error)
 		return error;
 
-	error = gfs2_dir_search(&dip->i_inode, name, &inum, &type);
+	error = gfs2_dir_check(&dip->i_inode, name, ip);
 	if (error)
 		return error;
 
-	if (!gfs2_inum_equal(&inum, &ip->i_num))
-		return -ENOENT;
-
-	if (IF2DT(ip->i_inode.i_mode) != type) {
-		gfs2_consist_inode(dip);
-		return -EIO;
-	}
-
 	return 0;
 }
 
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index b57f448..05fc095 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -10,17 +10,17 @@
 #ifndef __INODE_DOT_H__
 #define __INODE_DOT_H__
 
-static inline int gfs2_is_stuffed(struct gfs2_inode *ip)
+static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
 {
 	return !ip->i_di.di_height;
 }
 
-static inline int gfs2_is_jdata(struct gfs2_inode *ip)
+static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
 {
 	return ip->i_di.di_flags & GFS2_DIF_JDATA;
 }
 
-static inline int gfs2_is_dir(struct gfs2_inode *ip)
+static inline int gfs2_is_dir(const struct gfs2_inode *ip)
 {
 	return S_ISDIR(ip->i_inode.i_mode);
 }
@@ -32,9 +32,15 @@ static inline void gfs2_set_inode_blocks(struct inode *inode)
 		(GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
 }
 
+static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
+				  u64 no_formal_ino)
+{
+	return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
+}
+
 void gfs2_inode_attr_in(struct gfs2_inode *ip);
-struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type);
-struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum);
+struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned type);
+struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
 
 int gfs2_inode_refresh(struct gfs2_inode *ip);
 
@@ -47,7 +53,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
 int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
 		struct gfs2_inode *ip);
 int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
-		   struct gfs2_inode *ip);
+		   const struct gfs2_inode *ip);
 int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to);
 int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
 int gfs2_glock_nq_atime(struct gfs2_holder *gh);
diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h
index e037425..527bf19 100644
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -63,7 +63,7 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
 static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
 					 struct buffer_head **bhp)
 {
-	return gfs2_meta_indirect_buffer(ip, 0, ip->i_num.no_addr, 0, bhp);
+	return gfs2_meta_indirect_buffer(ip, 0, ip->i_no_addr, 0, bhp);
 }
 
 struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);
diff --git a/fs/gfs2/ondisk.c b/fs/gfs2/ondisk.c
index d9ecfd2..cd4cf05 100644
--- a/fs/gfs2/ondisk.c
+++ b/fs/gfs2/ondisk.c
@@ -33,26 +33,10 @@
  * first arg: the cpu-order structure
  */
 
-void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf)
+void gfs2_inum_out(const struct gfs2_inode *ip, struct gfs2_dirent *dent)
 {
-	const struct gfs2_inum *str = buf;
-
-	no->no_formal_ino = be64_to_cpu(str->no_formal_ino);
-	no->no_addr = be64_to_cpu(str->no_addr);
-}
-
-void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf)
-{
-	struct gfs2_inum *str = buf;
-
-	str->no_formal_ino = cpu_to_be64(no->no_formal_ino);
-	str->no_addr = cpu_to_be64(no->no_addr);
-}
-
-static void gfs2_inum_print(const struct gfs2_inum_host *no)
-{
-	printk(KERN_INFO "  no_formal_ino = %llu\n", (unsigned long long)no->no_formal_ino);
-	printk(KERN_INFO "  no_addr = %llu\n", (unsigned long long)no->no_addr);
+	dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
+	dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
 }
 
 static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf)
@@ -74,9 +58,10 @@ void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)
 	sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
 	sb->sb_bsize = be32_to_cpu(str->sb_bsize);
 	sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
-
-	gfs2_inum_in(&sb->sb_master_dir, (char *)&str->sb_master_dir);
-	gfs2_inum_in(&sb->sb_root_dir, (char *)&str->sb_root_dir);
+	sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
+	sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
+	sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
+	sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
 
 	memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
 	memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
@@ -146,9 +131,8 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
 	str->di_header.__pad0 = 0;
 	str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
 	str->di_header.__pad1 = 0;
-
-	gfs2_inum_out(&ip->i_num, &str->di_num);
-
+	str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
+	str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
 	str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
 	str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
 	str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
@@ -178,7 +162,8 @@ void gfs2_dinode_print(const struct gfs2_inode *ip)
 {
 	const struct gfs2_dinode_host *di = &ip->i_di;
 
-	gfs2_inum_print(&ip->i_num);
+	printk(KERN_INFO "  no_formal_ino = %llu\n", (unsigned long long)ip->i_no_formal_ino);
+	printk(KERN_INFO "  no_addr = %llu\n", (unsigned long long)ip->i_no_addr);
 
 	printk(KERN_INFO "  di_size = %llu\n", (unsigned long long)di->di_size);
 	printk(KERN_INFO "  di_blocks = %llu\n", (unsigned long long)di->di_blocks);
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 30c1562..2f35864 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -728,8 +728,8 @@ static unsigned limit = 0;
 			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);
+			(unsigned long long)ip->i_no_formal_ino,
+			(unsigned long long)ip->i_no_addr);
 
 		for (x = 0; x < GFS2_MAX_META_HEIGHT; x++)
 			fs_warn(sdp, "ip->i_cache[%u] = %s\n",
diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c
index c6bac6b..5e7e265 100644
--- a/fs/gfs2/ops_dentry.c
+++ b/fs/gfs2/ops_dentry.c
@@ -22,6 +22,7 @@
 #include "glock.h"
 #include "ops_dentry.h"
 #include "util.h"
+#include "inode.h"
 
 /**
  * gfs2_drevalidate - Check directory lookup consistency
@@ -41,14 +42,15 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 	struct gfs2_inode *dip = GFS2_I(parent->d_inode);
 	struct inode *inode = dentry->d_inode;
 	struct gfs2_holder d_gh;
-	struct gfs2_inode *ip;
-	struct gfs2_inum_host inum;
-	unsigned int type;
+	struct gfs2_inode *ip = NULL;
 	int error;
 	int had_lock=0;
 
-	if (inode && is_bad_inode(inode))
-		goto invalid;
+	if (inode) {
+		if (is_bad_inode(inode))
+			goto invalid;
+		ip = GFS2_I(inode);
+	}
 
 	if (sdp->sd_args.ar_localcaching)
 		goto valid;
@@ -60,7 +62,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 			goto fail;
 	} 
 
-	error = gfs2_dir_search(parent->d_inode, &dentry->d_name, &inum, &type);
+	error = gfs2_dir_check(parent->d_inode, &dentry->d_name, ip);
 	switch (error) {
 	case 0:
 		if (!inode)
@@ -74,16 +76,6 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
 		goto fail_gunlock;
 	}
 
-	ip = GFS2_I(inode);
-
-	if (!gfs2_inum_equal(&ip->i_num, &inum))
-		goto invalid_gunlock;
-
-	if (IF2DT(ip->i_inode.i_mode) != type) {
-		gfs2_consist_inode(dip);
-		goto fail_gunlock;
-	}
-
 valid_gunlock:
 	if (!had_lock)
 		gfs2_glock_dq_uninit(&d_gh);
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index aad9183..410038a 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -75,10 +75,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
 	    (connectable && *len < GFS2_LARGE_FH_SIZE))
 		return 255;
 
-	fh[0] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
-	fh[1] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
-	fh[2] = cpu_to_be32(ip->i_num.no_addr >> 32);
-	fh[3] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
+	fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
+	fh[1] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
+	fh[2] = cpu_to_be32(ip->i_no_addr >> 32);
+	fh[3] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
 	*len = GFS2_SMALL_FH_SIZE;
 
 	if (!connectable || inode == sb->s_root->d_inode)
@@ -90,10 +90,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
 	igrab(inode);
 	spin_unlock(&dentry->d_lock);
 
-	fh[4] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
-	fh[5] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
-	fh[6] = cpu_to_be32(ip->i_num.no_addr >> 32);
-	fh[7] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
+	fh[4] = cpu_to_be32(ip->i_no_formal_ino >> 32);
+	fh[5] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
+	fh[6] = cpu_to_be32(ip->i_no_addr >> 32);
+	fh[7] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
 
 	fh[8]  = cpu_to_be32(inode->i_mode);
 	fh[9]  = 0;	/* pad to double word */
@@ -144,7 +144,8 @@ static int gfs2_get_name(struct dentry *parent, char *name,
 	ip = GFS2_I(inode);
 
 	*name = 0;
-	gnfd.inum = ip->i_num;
+	gnfd.inum.no_addr = ip->i_no_addr;
+	gnfd.inum.no_formal_ino = ip->i_no_formal_ino;
 	gnfd.name = name;
 
 	error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &gh);
@@ -202,9 +203,9 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
 
 	/* System files? */
 
-	inode = gfs2_ilookup(sb, inum);
+	inode = gfs2_ilookup(sb, inum->no_addr);
 	if (inode) {
-		if (GFS2_I(inode)->i_num.no_formal_ino != inum->no_formal_ino) {
+		if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
 			iput(inode);
 			return ERR_PTR(-ESTALE);
 		}
@@ -236,7 +237,7 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
 	gfs2_glock_dq_uninit(&rgd_gh);
 	gfs2_glock_dq_uninit(&ri_gh);
 
-	inode = gfs2_inode_lookup(sb, inum, fh_obj->imode);
+	inode = gfs2_inode_lookup(sb, inum->no_addr, fh_obj->imode);
 	if (!inode)
 		goto fail;
 	if (IS_ERR(inode)) {
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 329c4dc..6b36249 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -503,7 +503,7 @@ static int gfs2_lock(struct file *file, int cmd, struct file_lock *fl)
 	struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
 	struct gfs2_sbd *sdp = GFS2_SB(file->f_mapping->host);
 	struct lm_lockname name =
-		{ .ln_number = ip->i_num.no_addr,
+		{ .ln_number = ip->i_no_addr,
 		  .ln_type = LM_TYPE_PLOCK };
 
 	if (!(fl->fl_flags & FL_POSIX))
@@ -558,7 +558,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 		gfs2_glock_dq_uninit(fl_gh);
 	} else {
 		error = gfs2_glock_get(GFS2_SB(&ip->i_inode),
-				      ip->i_num.no_addr, &gfs2_flock_glops,
+				      ip->i_no_addr, &gfs2_flock_glops,
 				      CREATE, &gl);
 		if (error)
 			goto out;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 2c5f8e7..c682371 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -236,17 +236,17 @@ fail:
 	return error;
 }
 
-static struct inode *gfs2_lookup_root(struct super_block *sb,
-				      struct gfs2_inum_host *inum)
+static inline struct inode *gfs2_lookup_root(struct super_block *sb,
+					     u64 no_addr)
 {
-	return gfs2_inode_lookup(sb, inum, DT_DIR);
+	return gfs2_inode_lookup(sb, no_addr, DT_DIR);
 }
 
 static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
 {
 	struct super_block *sb = sdp->sd_vfs;
 	struct gfs2_holder sb_gh;
-	struct gfs2_inum_host *inum;
+	u64 no_addr;
 	struct inode *inode;
 	int error = 0;
 
@@ -289,10 +289,10 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
 	sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
 
 	/* Get the root inode */
-	inum = &sdp->sd_sb.sb_root_dir;
+	no_addr = sdp->sd_sb.sb_root_dir.no_addr;
 	if (sb->s_type == &gfs2meta_fs_type)
-		inum = &sdp->sd_sb.sb_master_dir;
-	inode = gfs2_lookup_root(sb, inum);
+		no_addr = sdp->sd_sb.sb_master_dir.no_addr;
+	inode = gfs2_lookup_root(sb, no_addr);
 	if (IS_ERR(inode)) {
 		error = PTR_ERR(inode);
 		fs_err(sdp, "can't read in root inode: %d\n", error);
@@ -449,7 +449,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
 	if (undo)
 		goto fail_qinode;
 
-	inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir);
+	inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr);
 	if (IS_ERR(inode)) {
 		error = PTR_ERR(inode);
 		fs_err(sdp, "can't read in master directory: %d\n", error);
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index d85f6e0..f8ecfec 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -157,7 +157,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
 	if (error)
 		goto out_gunlock;
 
-	error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
+	error = gfs2_dir_check(dir, &dentry->d_name, NULL);
 	switch (error) {
 	case -ENOENT:
 		break;
@@ -217,8 +217,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
 			goto out_ipres;
 	}
 
-	error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
-			     IF2DT(inode->i_mode));
+	error = gfs2_dir_add(dir, &dentry->d_name, ip, IF2DT(inode->i_mode));
 	if (error)
 		goto out_end_trans;
 
@@ -275,7 +274,7 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
 	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
 	gfs2_holder_init(ip->i_gl,  LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-	rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+	rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
 	gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
 
 
@@ -420,7 +419,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 		dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
 		gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
 
-		gfs2_inum_out(&dip->i_num, &dent->de_inum);
+		gfs2_inum_out(dip, dent);
 		dent->de_type = cpu_to_be16(DT_DIR);
 
 		gfs2_dinode_out(ip, di);
@@ -472,7 +471,7 @@ static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
 	gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
 	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
 
-	rgd = gfs2_blk2rgrpd(sdp, ip->i_num.no_addr);
+	rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
 	gfs2_holder_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
 
 	error = gfs2_glock_nq_m(3, ghs);
@@ -614,7 +613,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 		 * this is the case of the target file already existing
 		 * so we unlink before doing the rename
 		 */
-		nrgd = gfs2_blk2rgrpd(sdp, nip->i_num.no_addr);
+		nrgd = gfs2_blk2rgrpd(sdp, nip->i_no_addr);
 		if (nrgd)
 			gfs2_holder_init(nrgd->rd_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
 	}
@@ -653,7 +652,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 		if (error)
 			goto out_gunlock;
 
-		error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
+		error = gfs2_dir_check(ndir, &ndentry->d_name, NULL);
 		switch (error) {
 		case -ENOENT:
 			error = 0;
@@ -750,7 +749,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 		if (error)
 			goto out_end_trans;
 
-		error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
+		error = gfs2_dir_mvino(ip, &name, nip, DT_DIR);
 		if (error)
 			goto out_end_trans;
 	} else {
@@ -768,8 +767,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 	if (error)
 		goto out_end_trans;
 
-	error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
-			     IF2DT(ip->i_inode.i_mode));
+	error = gfs2_dir_add(ndir, &ndentry->d_name, ip, IF2DT(ip->i_inode.i_mode));
 	if (error)
 		goto out_end_trans;
 
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 1727f50..8def119 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1379,7 +1379,7 @@ void gfs2_unlink_di(struct inode *inode)
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
 	struct gfs2_rgrpd *rgd;
-	u64 blkno = ip->i_num.no_addr;
+	u64 blkno = ip->i_no_addr;
 
 	rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
 	if (!rgd)
@@ -1414,9 +1414,9 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
 
 void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
 {
-	gfs2_free_uninit_di(rgd, ip->i_num.no_addr);
+	gfs2_free_uninit_di(rgd, ip->i_no_addr);
 	gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
-	gfs2_meta_wipe(ip, ip->i_num.no_addr, 1);
+	gfs2_meta_wipe(ip, ip->i_no_addr, 1);
 }
 
 /**
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 4fdda97..faccffd 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -360,7 +360,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
 		name.len = sprintf(buf, "journal%u", sdp->sd_journals);
 		name.hash = gfs2_disk_hash(name.name, name.len);
 
-		error = gfs2_dir_search(sdp->sd_jindex, &name, NULL, NULL);
+		error = gfs2_dir_check(sdp->sd_jindex, &name, NULL);
 		if (error == -ENOENT) {
 			error = 0;
 			break;
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index 601eaa1..3f5edc5 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -115,8 +115,8 @@ int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
 		"GFS2: fsid=%s:   inode = %llu %llu\n"
 		"GFS2: fsid=%s:   function = %s, file = %s, line = %u\n",
 		sdp->sd_fsname,
-		sdp->sd_fsname, (unsigned long long)ip->i_num.no_formal_ino,
-		(unsigned long long)ip->i_num.no_addr,
+		sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
+		(unsigned long long)ip->i_no_addr,
 		sdp->sd_fsname, function, file, line);
 	return rv;
 }
diff --git a/include/linux/gfs2_ondisk.h b/include/linux/gfs2_ondisk.h
index 8b7e4c1..a82ec8c 100644
--- a/include/linux/gfs2_ondisk.h
+++ b/include/linux/gfs2_ondisk.h
@@ -59,13 +59,6 @@ struct gfs2_inum_host {
 	__u64 no_addr;
 };
 
-static inline int gfs2_inum_equal(const struct gfs2_inum_host *ino1,
-				  const struct gfs2_inum_host *ino2)
-{
-	return ino1->no_formal_ino == ino2->no_formal_ino &&
-	       ino1->no_addr == ino2->no_addr;
-}
-
 /*
  * Generic metadata head structure
  * Every inplace buffer logged in the journal must start with this.
@@ -509,9 +502,9 @@ struct gfs2_quota_change_host {
 
 #ifdef __KERNEL__
 /* Translation functions */
+struct gfs2_inode;
 
-extern void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf);
-extern void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf);
+extern void gfs2_inum_out(const struct gfs2_inode *ip, struct gfs2_dirent *dent);
 extern void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf);
 extern void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf);
 extern void gfs2_rindex_out(const struct gfs2_rindex_host *ri, void *buf);
-- 
1.5.1.2





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