reiserfs: remove privroot hiding in lookup

 With Al Viro's patch to move privroot lookup to fs mount, there's no need
 to have special code to hide the privroot in reiserfs_lookup.

 I've also cleaned up the privroot hiding in reiserfs_readdir_dentry and
 removed the last user of reiserfs_xattrs().
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/reiserfs/dir.c

@@ -41,6 +41,18 @@ static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
 
 #define store_ih(where,what) copy_item_head (where, what)
 
+static inline bool is_privroot_deh(struct dentry *dir,
+				   struct reiserfs_de_head *deh)
+{
+	int ret = 0;
+#ifdef CONFIG_REISERFS_FS_XATTR
+	struct dentry *privroot = REISERFS_SB(dir->d_sb)->priv_root;
+	ret = (dir == dir->d_parent && privroot->d_inode &&
+	       deh->deh_objectid == INODE_PKEY(privroot->d_inode)->k_objectid);
+#endif
+	return ret;
+}
+
 int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent,
 			   filldir_t filldir, loff_t *pos)
 {
@@ -138,18 +150,8 @@ int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent,
 				}
 
 				/* Ignore the .reiserfs_priv entry */
-				if (reiserfs_xattrs(inode->i_sb) &&
-				    !old_format_only(inode->i_sb) &&
-				    dentry == inode->i_sb->s_root &&
-				    REISERFS_SB(inode->i_sb)->priv_root &&
-				    REISERFS_SB(inode->i_sb)->priv_root->d_inode
-				    && deh_objectid(deh) ==
-				    le32_to_cpu(INODE_PKEY
-						(REISERFS_SB(inode->i_sb)->
-						 priv_root->d_inode)->
-						k_objectid)) {
+				if (is_privroot_deh(dentry, deh))
 					continue;
-				}
 
 				d_off = deh_offset(deh);
 				*pos = d_off;

fs/reiserfs/namei.c

@@ -338,21 +338,8 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
 				&path_to_entry, &de);
 	pathrelse(&path_to_entry);
 	if (retval == NAME_FOUND) {
-		/* Hide the .reiserfs_priv directory */
-		if (reiserfs_xattrs(dir->i_sb) &&
-		    !old_format_only(dir->i_sb) &&
-		    REISERFS_SB(dir->i_sb)->priv_root &&
-		    REISERFS_SB(dir->i_sb)->priv_root->d_inode &&
-		    de.de_objectid ==
-		    le32_to_cpu(INODE_PKEY
-				(REISERFS_SB(dir->i_sb)->priv_root->d_inode)->
-				k_objectid)) {
-			reiserfs_write_unlock(dir->i_sb);
-			return ERR_PTR(-EACCES);
-		}
-
-		inode =
-		    reiserfs_iget(dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
+		inode = reiserfs_iget(dir->i_sb,
+				      (struct cpu_key *)&(de.de_dir_id));
 		if (!inode || IS_ERR(inode)) {
 			reiserfs_write_unlock(dir->i_sb);
 			return ERR_PTR(-EACCES);

fs/reiserfs/xattr.c

@@ -841,7 +841,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
 	if (!dentry->d_inode)
 		return -EINVAL;
 
-	if (!reiserfs_xattrs(dentry->d_sb) ||
+	if (!dentry->d_sb->s_xattr ||
 	    get_inode_sd_version(dentry->d_inode) == STAT_DATA_V1)
 		return -EOPNOTSUPP;
 

include/linux/reiserfs_fs_sb.h

@@ -488,7 +488,6 @@ enum reiserfs_mount_options {
 #define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
 #define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
 #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
-#define reiserfs_xattrs(s) ((s)->s_xattr != NULL)
 #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
 #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
 #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))