Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (23 commits)
  ocfs2: Optionally return filldir errors
  ocfs2: Write support for directories with inline data
  ocfs2: Read support for directories with inline data
  ocfs2: Write support for inline data
  ocfs2: Read support for inline data
  ocfs2: Structure updates for inline data
  ocfs2: Cleanup dirent size check
  ocfs2: Rename cleanups
  ocfs2: Provide convenience function for ino lookup
  ocfs2: Implement ocfs2_empty_dir() as a caller of ocfs2_dir_foreach()
  ocfs2: Remove open coded readdir()
  ocfs2: Pass raw u64 to filldir
  ocfs2: Abstract out core dir listing functionality
  ocfs2: Move directory manipulation code into dir.c
  ocfs2: Small refactor of truncate zeroing code
  ocfs2: move nonsparse hole-filling into ocfs2_write_begin()
  ocfs2: Sync ocfs2_fs.h with ocfs2-tools
  [PATCH] fs/ocfs2/: removed unneeded initial value and function's return value
  ocfs2: Implement show_options()
  ocfs2: Clear slot map when umounting a local volume
  ...

fs/ocfs2/alloc.h

@@ -62,6 +62,11 @@ static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe)
 	return le16_to_cpu(fe->id2.i_list.l_tree_depth) + 2;
 }
 
+void ocfs2_dinode_new_extent_list(struct inode *inode, struct ocfs2_dinode *di);
+void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di);
+int ocfs2_convert_inline_data_to_extents(struct inode *inode,
+					 struct buffer_head *di_bh);
+
 int ocfs2_truncate_log_init(struct ocfs2_super *osb);
 void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb);
 void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb,
@@ -115,6 +120,8 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
 			  struct inode *inode,
 			  struct buffer_head *fe_bh,
 			  struct ocfs2_truncate_context *tc);
+int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
+			  unsigned int start, unsigned int end, int trunc);
 
 int ocfs2_find_leaf(struct inode *inode, struct ocfs2_extent_list *root_el,
 		    u32 cpos, struct buffer_head **leaf_bh);

fs/ocfs2/aops.h

@@ -34,6 +34,8 @@ int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
 			  struct inode *inode, unsigned int from,
 			  unsigned int to, int new);
 
+void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages);
+
 int walk_page_buffers(	handle_t *handle,
 			struct buffer_head *head,
 			unsigned from,
@@ -59,6 +61,10 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
 			     struct page **pagep, void **fsdata,
 			     struct buffer_head *di_bh, struct page *mmap_page);
 
+int ocfs2_read_inline_data(struct inode *inode, struct page *page,
+			   struct buffer_head *di_bh);
+int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size);
+
 /* all ocfs2_dio_end_io()'s fault */
 #define ocfs2_iocb_is_rw_locked(iocb) \
 	test_bit(0, (unsigned long *)&iocb->private)

fs/ocfs2/dir.h

@@ -26,17 +26,49 @@
 #ifndef OCFS2_DIR_H
 #define OCFS2_DIR_H
 
+struct buffer_head *ocfs2_find_entry(const char *name,
+				     int namelen,
+				     struct inode *dir,
+				     struct ocfs2_dir_entry **res_dir);
+int ocfs2_delete_entry(handle_t *handle,
+		       struct inode *dir,
+		       struct ocfs2_dir_entry *de_del,
+		       struct buffer_head *bh);
+int __ocfs2_add_entry(handle_t *handle,
+		      struct inode *dir,
+		      const char *name, int namelen,
+		      struct inode *inode, u64 blkno,
+		      struct buffer_head *parent_fe_bh,
+		      struct buffer_head *insert_bh);
+static inline int ocfs2_add_entry(handle_t *handle,
+				  struct dentry *dentry,
+				  struct inode *inode, u64 blkno,
+				  struct buffer_head *parent_fe_bh,
+				  struct buffer_head *insert_bh)
+{
+	return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
+				 dentry->d_name.name, dentry->d_name.len,
+				 inode, blkno, parent_fe_bh, insert_bh);
+}
+int ocfs2_update_entry(struct inode *dir, handle_t *handle,
+		       struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
+		       struct inode *new_entry_inode);
+
 int ocfs2_check_dir_for_entry(struct inode *dir,
 			      const char *name,
 			      int namelen);
-int ocfs2_empty_dir(struct inode *inode);  /* FIXME: to namei.c */
+int ocfs2_empty_dir(struct inode *inode);
 int ocfs2_find_files_on_disk(const char *name,
 			     int namelen,
 			     u64 *blkno,
 			     struct inode *inode,
 			     struct buffer_head **dirent_bh,
 			     struct ocfs2_dir_entry **dirent);
+int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
+			       int namelen, u64 *blkno);
 int ocfs2_readdir(struct file *filp, void *dirent, filldir_t filldir);
+int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
+		      filldir_t filldir);
 int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
 				 struct inode *dir,
 				 struct buffer_head *parent_fe_bh,
@@ -44,11 +76,11 @@ int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
 				 int namelen,
 				 struct buffer_head **ret_de_bh);
 struct ocfs2_alloc_context;
-int ocfs2_do_extend_dir(struct super_block *sb,
-			handle_t *handle,
-			struct inode *dir,
-			struct buffer_head *parent_fe_bh,
-			struct ocfs2_alloc_context *data_ac,
-			struct ocfs2_alloc_context *meta_ac,
-			struct buffer_head **new_bh);
+int ocfs2_fill_new_dir(struct ocfs2_super *osb,
+		       handle_t *handle,
+		       struct inode *parent,
+		       struct inode *inode,
+		       struct buffer_head *fe_bh,
+		       struct ocfs2_alloc_context *data_ac);
+
 #endif /* OCFS2_DIR_H */

fs/ocfs2/dlmglue.c

@@ -1482,6 +1482,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
 	lvb->lvb_imtime_packed =
 		cpu_to_be64(ocfs2_pack_timespec(&inode->i_mtime));
 	lvb->lvb_iattr    = cpu_to_be32(oi->ip_attr);
+	lvb->lvb_idynfeatures = cpu_to_be16(oi->ip_dyn_features);
 	lvb->lvb_igeneration = cpu_to_be32(inode->i_generation);
 
 out:
@@ -1515,6 +1516,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
 	i_size_write(inode, be64_to_cpu(lvb->lvb_isize));
 
 	oi->ip_attr = be32_to_cpu(lvb->lvb_iattr);
+	oi->ip_dyn_features = be16_to_cpu(lvb->lvb_idynfeatures);
 	ocfs2_set_inode_flags(inode);
 
 	/* fast-symlinks are a special case */

fs/ocfs2/dlmglue.h

@@ -29,12 +29,12 @@
 
 #include "dcache.h"
 
-#define OCFS2_LVB_VERSION 4
+#define OCFS2_LVB_VERSION 5
 
 struct ocfs2_meta_lvb {
 	__u8         lvb_version;
 	__u8         lvb_reserved0;
-	__be16       lvb_reserved1;
+	__be16       lvb_idynfeatures;
 	__be32       lvb_iclusters;
 	__be32       lvb_iuid;
 	__be32       lvb_igid;

fs/ocfs2/export.c

@@ -88,8 +88,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
 	struct dentry *parent;
 	struct inode *inode;
 	struct inode *dir = child->d_inode;
-	struct buffer_head *dirent_bh = NULL;
-	struct ocfs2_dir_entry *dirent;
 
 	mlog_entry("(0x%p, '%.*s')\n", child,
 		   child->d_name.len, child->d_name.name);
@@ -105,8 +103,7 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
 		goto bail;
 	}
 
-	status = ocfs2_find_files_on_disk("..", 2, &blkno, dir, &dirent_bh,
-					  &dirent);
+	status = ocfs2_lookup_ino_from_name(dir, "..", 2, &blkno);
 	if (status < 0) {
 		parent = ERR_PTR(-ENOENT);
 		goto bail_unlock;
@@ -131,9 +128,6 @@ static struct dentry *ocfs2_get_parent(struct dentry *child)
 bail_unlock:
 	ocfs2_meta_unlock(dir, 0);
 
-	if (dirent_bh)
-		brelse(dirent_bh);
-
 bail:
 	mlog_exit_ptr(parent);
 

fs/ocfs2/extent_map.c

@@ -387,6 +387,12 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
 	struct ocfs2_extent_rec *rec;
 	u32 coff;
 
+	if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+		ret = -ERANGE;
+		mlog_errno(ret);
+		goto out;
+	}
+
 	ret = ocfs2_extent_map_lookup(inode, v_cluster, p_cluster,
 				      num_clusters, extent_flags);
 	if (ret == 0)

fs/ocfs2/file.h

@@ -47,6 +47,8 @@ int ocfs2_do_extend_allocation(struct ocfs2_super *osb,
 			       struct ocfs2_alloc_context *data_ac,
 			       struct ocfs2_alloc_context *meta_ac,
 			       enum ocfs2_alloc_restarted *reason_ret);
+int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size,
+			  u64 zero_to);
 int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di,
 			  u32 clusters_to_add, u32 extents_to_split,
 			  struct ocfs2_alloc_context **data_ac,

fs/ocfs2/inode.c

@@ -241,6 +241,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
 
 	OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
 	OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
+	OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
 
 	inode->i_version = 1;
 	inode->i_generation = le32_to_cpu(fe->i_generation);
@@ -513,6 +514,10 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
 
 	fe = (struct ocfs2_dinode *) fe_bh->b_data;
 
+	/*
+	 * This check will also skip truncate of inodes with inline
+	 * data and fast symlinks.
+	 */
 	if (fe->i_clusters) {
 		handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
 		if (IS_ERR(handle)) {
@@ -1220,6 +1225,7 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
 	fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
 	ocfs2_get_inode_flags(OCFS2_I(inode));
 	fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr);
+	fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
 	spin_unlock(&OCFS2_I(inode)->ip_lock);
 
 	fe->i_size = cpu_to_le64(i_size_read(inode));
@@ -1257,6 +1263,7 @@ void ocfs2_refresh_inode(struct inode *inode,
 
 	OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
 	OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
+	OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features);
 	ocfs2_set_inode_flags(inode);
 	i_size_write(inode, le64_to_cpu(fe->i_size));
 	inode->i_nlink = le16_to_cpu(fe->i_links_count);

fs/ocfs2/inode.h

@@ -51,6 +51,7 @@ struct ocfs2_inode_info
 
 	u32				ip_flags; /* see below */
 	u32				ip_attr; /* inode attributes */
+	u16				ip_dyn_features;
 
 	/* protected by recovery_lock. */
 	struct inode			*ip_next_orphan;

fs/ocfs2/journal.c

@@ -35,13 +35,13 @@
 #include "ocfs2.h"
 
 #include "alloc.h"
+#include "dir.h"
 #include "dlmglue.h"
 #include "extent_map.h"
 #include "heartbeat.h"
 #include "inode.h"
 #include "journal.h"
 #include "localalloc.h"
-#include "namei.h"
 #include "slot_map.h"
 #include "super.h"
 #include "vote.h"
@@ -1213,17 +1213,49 @@ bail:
 	return status;
 }
 
+struct ocfs2_orphan_filldir_priv {
+	struct inode		*head;
+	struct ocfs2_super	*osb;
+};
+
+static int ocfs2_orphan_filldir(void *priv, const char *name, int name_len,
+				loff_t pos, u64 ino, unsigned type)
+{
+	struct ocfs2_orphan_filldir_priv *p = priv;
+	struct inode *iter;
+
+	if (name_len == 1 && !strncmp(".", name, 1))
+		return 0;
+	if (name_len == 2 && !strncmp("..", name, 2))
+		return 0;
+
+	/* Skip bad inodes so that recovery can continue */
+	iter = ocfs2_iget(p->osb, ino,
+			  OCFS2_FI_FLAG_ORPHAN_RECOVERY);
+	if (IS_ERR(iter))
+		return 0;
+
+	mlog(0, "queue orphan %llu\n",
+	     (unsigned long long)OCFS2_I(iter)->ip_blkno);
+	/* No locking is required for the next_orphan queue as there
+	 * is only ever a single process doing orphan recovery. */
+	OCFS2_I(iter)->ip_next_orphan = p->head;
+	p->head = iter;
+
+	return 0;
+}
+
 static int ocfs2_queue_orphans(struct ocfs2_super *osb,
 			       int slot,
 			       struct inode **head)
 {
 	int status;
 	struct inode *orphan_dir_inode = NULL;
-	struct inode *iter;
-	unsigned long offset, blk, local;
-	struct buffer_head *bh = NULL;
-	struct ocfs2_dir_entry *de;
-	struct super_block *sb = osb->sb;
+	struct ocfs2_orphan_filldir_priv priv;
+	loff_t pos = 0;
+
+	priv.osb = osb;
+	priv.head = *head;
 
 	orphan_dir_inode = ocfs2_get_system_file_inode(osb,
 						       ORPHAN_DIR_SYSTEM_INODE,
@@ -1241,77 +1273,15 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
 		goto out;
 	}
 
-	offset = 0;
-	iter = NULL;
-	while(offset < i_size_read(orphan_dir_inode)) {
-		blk = offset >> sb->s_blocksize_bits;
-
-		bh = ocfs2_bread(orphan_dir_inode, blk, &status, 0);
-		if (!bh)
-			status = -EINVAL;
-		if (status < 0) {
-			if (bh)
-				brelse(bh);
-			mlog_errno(status);
-			goto out_unlock;
-		}
-
-		local = 0;
-		while(offset < i_size_read(orphan_dir_inode)
-		      && local < sb->s_blocksize) {
-			de = (struct ocfs2_dir_entry *) (bh->b_data + local);
-
-			if (!ocfs2_check_dir_entry(orphan_dir_inode,
-						  de, bh, local)) {
-				status = -EINVAL;
-				mlog_errno(status);
-				brelse(bh);
-				goto out_unlock;
-			}
-
-			local += le16_to_cpu(de->rec_len);
-			offset += le16_to_cpu(de->rec_len);
-
-			/* I guess we silently fail on no inode? */
-			if (!le64_to_cpu(de->inode))
-				continue;
-			if (de->file_type > OCFS2_FT_MAX) {
-				mlog(ML_ERROR,
-				     "block %llu contains invalid de: "
-				     "inode = %llu, rec_len = %u, "
-				     "name_len = %u, file_type = %u, "
-				     "name='%.*s'\n",
-				     (unsigned long long)bh->b_blocknr,
-				     (unsigned long long)le64_to_cpu(de->inode),
-				     le16_to_cpu(de->rec_len),
-				     de->name_len,
-				     de->file_type,
-				     de->name_len,
-				     de->name);
-				continue;
-			}
-			if (de->name_len == 1 && !strncmp(".", de->name, 1))
-				continue;
-			if (de->name_len == 2 && !strncmp("..", de->name, 2))
-				continue;
-
-			iter = ocfs2_iget(osb, le64_to_cpu(de->inode),
-					  OCFS2_FI_FLAG_ORPHAN_RECOVERY);
-			if (IS_ERR(iter))
-				continue;
-
-			mlog(0, "queue orphan %llu\n",
-			     (unsigned long long)OCFS2_I(iter)->ip_blkno);
-			/* No locking is required for the next_orphan
-			 * queue as there is only ever a single
-			 * process doing orphan recovery. */
-			OCFS2_I(iter)->ip_next_orphan = *head;
-			*head = iter;
-		}
-		brelse(bh);
+	status = ocfs2_dir_foreach(orphan_dir_inode, &pos, &priv,
+				   ocfs2_orphan_filldir);
+	if (status) {
+		mlog_errno(status);
+		goto out;
 	}
 
-out_unlock:
+	*head = priv.head;
+
 	ocfs2_meta_unlock(orphan_dir_inode, 0);
 out:
 	mutex_unlock(&orphan_dir_inode->i_mutex);

fs/ocfs2/journal.h

@@ -282,6 +282,9 @@ int                  ocfs2_journal_dirty_data(handle_t *handle,
  * prev. group desc. if we relink. */
 #define OCFS2_SUBALLOC_ALLOC (3)
 
+#define OCFS2_INLINE_TO_EXTENTS_CREDITS (OCFS2_SUBALLOC_ALLOC		\
+					 + OCFS2_INODE_UPDATE_CREDITS)
+
 /* dinode + group descriptor update. We don't relink on free yet. */
 #define OCFS2_SUBALLOC_FREE  (2)
 

fs/ocfs2/namei.h

@@ -30,29 +30,10 @@ extern const struct inode_operations ocfs2_dir_iops;
 
 struct dentry *ocfs2_get_parent(struct dentry *child);
 
-int ocfs2_check_dir_entry (struct inode *dir,
-			   struct ocfs2_dir_entry *de,
-			   struct buffer_head *bh,
-			   unsigned long offset);
-struct buffer_head *ocfs2_find_entry(const char *name,
-				     int namelen,
-				     struct inode *dir,
-				     struct ocfs2_dir_entry **res_dir);
 int ocfs2_orphan_del(struct ocfs2_super *osb,
 		     handle_t *handle,
 		     struct inode *orphan_dir_inode,
 		     struct inode *inode,
 		     struct buffer_head *orphan_dir_bh);
 
-static inline int ocfs2_match(int len,
-			      const char * const name,
-			      struct ocfs2_dir_entry *de)
-{
-	if (len != de->name_len)
-		return 0;
-	if (!de->inode)
-		return 0;
-	return !memcmp(name, de->name, len);
-}
-
 #endif /* OCFS2_NAMEI_H */

fs/ocfs2/ocfs2.h

@@ -319,6 +319,13 @@ static inline int ocfs2_writes_unwritten_extents(struct ocfs2_super *osb)
 	return 0;
 }
 
+static inline int ocfs2_supports_inline_data(struct ocfs2_super *osb)
+{
+	if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_INLINE_DATA)
+		return 1;
+	return 0;
+}
+
 /* set / clear functions because cluster events can make these happen
  * in parallel so we want the transitions to be atomic. this also
  * means that any future flags osb_flags must be protected by spinlock

fs/ocfs2/ocfs2_fs.h

@@ -87,7 +87,8 @@
 
 #define OCFS2_FEATURE_COMPAT_SUPP	OCFS2_FEATURE_COMPAT_BACKUP_SB
 #define OCFS2_FEATURE_INCOMPAT_SUPP	(OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
-					 | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC)
+					 | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \
+					 | OCFS2_FEATURE_INCOMPAT_INLINE_DATA)
 #define OCFS2_FEATURE_RO_COMPAT_SUPP	OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
 
 /*
@@ -110,6 +111,20 @@
 /* Support for sparse allocation in b-trees */
 #define OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC	0x0010
 
+/*
+ * Tunefs sets this incompat flag before starting an operation which
+ * would require cleanup on abort. This is done to protect users from
+ * inadvertently mounting the fs after an aborted run without
+ * fsck-ing.
+ *
+ * s_tunefs_flags on the super block describes precisely which
+ * operations were in progress.
+ */
+#define OCFS2_FEATURE_INCOMPAT_TUNEFS_INPROG	0x0020
+
+/* Support for data packed into inode blocks */
+#define OCFS2_FEATURE_INCOMPAT_INLINE_DATA	0x0040
+
 /*
  * backup superblock flag is used to indicate that this volume
  * has backup superblocks.
@@ -129,6 +144,11 @@
 /* the max backup superblock nums */
 #define OCFS2_MAX_BACKUP_SUPERBLOCKS	6
 
+/*
+ * Flags on ocfs2_super_block.s_tunefs_flags
+ */
+#define OCFS2_TUNEFS_INPROG_REMOVE_SLOT		0x0001	/* Removing slots */
+
 /*
  * Flags on ocfs2_dinode.i_flags
  */
@@ -146,6 +166,17 @@
 #define OCFS2_CHAIN_FL		(0x00000400)	/* Chain allocator */
 #define OCFS2_DEALLOC_FL	(0x00000800)	/* Truncate log */
 
+/*
+ * Flags on ocfs2_dinode.i_dyn_features
+ *
+ * These can change much more often than i_flags. When adding flags,
+ * keep in mind that i_dyn_features is only 16 bits wide.
+ */
+#define OCFS2_INLINE_DATA_FL	(0x0001)	/* Data stored in inode block */
+#define OCFS2_HAS_XATTR_FL	(0x0002)
+#define OCFS2_INLINE_XATTR_FL	(0x0004)
+#define OCFS2_INDEXED_DIR_FL	(0x0008)
+
 /* Inode attributes, keep in sync with EXT2 */
 #define OCFS2_SECRM_FL		(0x00000001)	/* Secure deletion */
 #define OCFS2_UNRM_FL		(0x00000002)	/* Undelete */
@@ -447,8 +478,8 @@ struct ocfs2_super_block {
 	__le32 s_clustersize_bits;	/* Clustersize for this fs */
 /*40*/	__le16 s_max_slots;		/* Max number of simultaneous mounts
 					   before tunefs required */
-	__le16 s_reserved1;
-	__le32 s_reserved2;
+	__le16 s_tunefs_flag;
+	__le32 s_reserved1;
 	__le64 s_first_cluster_group;	/* Block offset of 1st cluster
 					 * group header */
 /*50*/	__u8  s_label[OCFS2_MAX_VOL_LABEL_LEN];	/* Label for mounting, etc. */
@@ -470,6 +501,19 @@ struct ocfs2_local_alloc
 /*10*/	__u8   la_bitmap[0];
 };
 
+/*
+ * Data-in-inode header. This is only used if i_dyn_features has
+ * OCFS2_INLINE_DATA_FL set.
+ */
+struct ocfs2_inline_data
+{
+/*00*/	__le16	id_count;	/* Number of bytes that can be used
+				 * for data, starting at id_data */
+	__le16	id_reserved0;
+	__le32	id_reserved1;
+	__u8	id_data[0];	/* Start of user data */
+};
+
 /*
  * On disk inode for OCFS2
  */
@@ -502,7 +546,7 @@ struct ocfs2_dinode {
 	__le32 i_attr;
 	__le16 i_orphaned_slot;		/* Only valid when OCFS2_ORPHANED_FL
 					   was set in i_flags */
-	__le16 i_reserved1;
+	__le16 i_dyn_features;
 /*70*/	__le64 i_reserved2[8];
 /*B8*/	union {
 		__le64 i_pad1;		/* Generic way to refer to this
@@ -528,6 +572,7 @@ struct ocfs2_dinode {
 		struct ocfs2_chain_list		i_chain;
 		struct ocfs2_extent_list	i_list;
 		struct ocfs2_truncate_log	i_dealloc;
+		struct ocfs2_inline_data	i_data;
 		__u8               		i_symlink[0];
 	} id2;
 /* Actual on-disk size is one block */
@@ -577,6 +622,12 @@ static inline int ocfs2_fast_symlink_chars(struct super_block *sb)
 		 offsetof(struct ocfs2_dinode, id2.i_symlink);
 }
 
+static inline int ocfs2_max_inline_data(struct super_block *sb)
+{
+	return sb->s_blocksize -
+		offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+}
+
 static inline int ocfs2_extent_recs_per_inode(struct super_block *sb)
 {
 	int size;
@@ -656,6 +707,11 @@ static inline int ocfs2_fast_symlink_chars(int blocksize)
 	return blocksize - offsetof(struct ocfs2_dinode, id2.i_symlink);
 }
 
+static inline int ocfs2_max_inline_data(int blocksize)
+{
+	return blocksize - offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+}
+
 static inline int ocfs2_extent_recs_per_inode(int blocksize)
 {
 	int size;

fs/ocfs2/super.c

@@ -39,6 +39,7 @@
 #include <linux/parser.h>
 #include <linux/crc32.h>
 #include <linux/debugfs.h>
+#include <linux/mount.h>
 
 #include <cluster/nodemanager.h>
 
@@ -91,6 +92,7 @@ struct mount_options
 static int ocfs2_parse_options(struct super_block *sb, char *options,
 			       struct mount_options *mopt,
 			       int is_remount);
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
 static void ocfs2_put_super(struct super_block *sb);
 static int ocfs2_mount_volume(struct super_block *sb);
 static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
@@ -105,7 +107,7 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait);
 
 static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
 static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb);
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
 static int ocfs2_fill_local_node_info(struct ocfs2_super *osb);
 static int ocfs2_check_volume(struct ocfs2_super *osb);
 static int ocfs2_verify_volume(struct ocfs2_dinode *di,
@@ -133,6 +135,7 @@ static const struct super_operations ocfs2_sops = {
 	.write_super	= ocfs2_write_super,
 	.put_super	= ocfs2_put_super,
 	.remount_fs	= ocfs2_remount,
+	.show_options   = ocfs2_show_options,
 };
 
 enum {
@@ -177,7 +180,7 @@ static void ocfs2_write_super(struct super_block *sb)
 
 static int ocfs2_sync_fs(struct super_block *sb, int wait)
 {
-	int status = 0;
+	int status;
 	tid_t target;
 	struct ocfs2_super *osb = OCFS2_SB(sb);
 
@@ -275,9 +278,9 @@ bail:
 	return status;
 }
 
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
 {
-	int status = 0, i;
+	int i;
 	struct inode *inode;
 
 	mlog_entry_void();
@@ -302,8 +305,7 @@ static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
 		osb->root_inode = NULL;
 	}
 
-	mlog_exit(status);
-	return status;
+	mlog_exit(0);
 }
 
 /* We're allocating fs objects, use GFP_NOFS */
@@ -453,7 +455,7 @@ static int ocfs2_sb_probe(struct super_block *sb,
 			  struct buffer_head **bh,
 			  int *sector_size)
 {
-	int status = 0, tmpstat;
+	int status, tmpstat;
 	struct ocfs1_vol_disk_hdr *hdr;
 	struct ocfs2_dinode *di;
 	int blksize;
@@ -830,6 +832,41 @@ bail:
 	return status;
 }
 
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
+{
+	struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb);
+	unsigned long opts = osb->s_mount_opt;
+
+	if (opts & OCFS2_MOUNT_HB_LOCAL)
+		seq_printf(s, ",_netdev,heartbeat=local");
+	else
+		seq_printf(s, ",heartbeat=none");
+
+	if (opts & OCFS2_MOUNT_NOINTR)
+		seq_printf(s, ",nointr");
+
+	if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
+		seq_printf(s, ",data=writeback");
+	else
+		seq_printf(s, ",data=ordered");
+
+	if (opts & OCFS2_MOUNT_BARRIER)
+		seq_printf(s, ",barrier=1");
+
+	if (opts & OCFS2_MOUNT_ERRORS_PANIC)
+		seq_printf(s, ",errors=panic");
+	else
+		seq_printf(s, ",errors=remount-ro");
+
+	if (osb->preferred_slot != OCFS2_INVALID_SLOT)
+		seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
+
+	if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
+		seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
+
+	return 0;
+}
+
 static int __init ocfs2_init(void)
 {
 	int status;
@@ -1209,12 +1246,13 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
 		tmp = ocfs2_request_umount_vote(osb);
 		if (tmp < 0)
 			mlog_errno(tmp);
+	}
 
-		if (osb->slot_num != OCFS2_INVALID_SLOT)
-			ocfs2_put_slot(osb);
+	if (osb->slot_num != OCFS2_INVALID_SLOT)
+		ocfs2_put_slot(osb);
 
+	if (osb->dlm)
 		ocfs2_super_unlock(osb, 1);
-	}
 
 	ocfs2_release_system_inodes(osb);
 
@@ -1275,7 +1313,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
 				  struct buffer_head *bh,
 				  int sector_size)
 {
-	int status = 0;
+	int status;
 	int i, cbits, bbits;
 	struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
 	struct inode *inode = NULL;
@@ -1596,7 +1634,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
 
 static int ocfs2_check_volume(struct ocfs2_super *osb)
 {
-	int status = 0;
+	int status;
 	int dirty;
 	int local;
 	struct ocfs2_dinode *local_alloc = NULL; /* only used if we

fs/ocfs2/sysfile.c

@@ -100,17 +100,14 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
 	char namebuf[40];
 	struct inode *inode = NULL;
 	u64 blkno;
-	struct buffer_head *dirent_bh = NULL;
-	struct ocfs2_dir_entry *de = NULL;
 	int status = 0;
 
 	ocfs2_sprintf_system_inode_name(namebuf,
 					sizeof(namebuf),
 					type, slot);
 
-	status = ocfs2_find_files_on_disk(namebuf, strlen(namebuf),
-					  &blkno, osb->sys_root_inode,
-					  &dirent_bh, &de);
+	status = ocfs2_lookup_ino_from_name(osb->sys_root_inode, namebuf,
+					    strlen(namebuf), &blkno);
 	if (status < 0) {
 		goto bail;
 	}
@@ -122,8 +119,7 @@ static struct inode * _ocfs2_get_system_file_inode(struct ocfs2_super *osb,
 		goto bail;
 	}
 bail:
-	if (dirent_bh)
-		brelse(dirent_bh);
+
 	return inode;
 }