1 files changed, 18 insertions, 8 deletions

diff --git a/fs/libfs.c b/fs/libfs.c
index 275ca4749a2e..c18e9a1235b6 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -16,6 +16,8 @@
 
 #include <asm/uaccess.h>
 
+#include "internal.h"
+
 static inline int simple_positive(struct dentry *dentry)
 {
         return dentry->d_inode && !d_unhashed(dentry);
@@ -246,13 +248,11 @@ struct dentry *mount_pseudo(struct file_system_type *fs_type, char *name,
         root->i_ino = 1;
         root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
         root->i_atime = root->i_mtime = root->i_ctime = CURRENT_TIME;
-        dentry = d_alloc(NULL, &d_name);
+        dentry = __d_alloc(s, &d_name);
         if (!dentry) {
                 iput(root);
                 goto Enomem;
         }
-        dentry->d_sb = s;
-        dentry->d_parent = dentry;
         d_instantiate(dentry, root);
         s->s_root = dentry;
         s->s_d_op = dops;
@@ -328,8 +328,10 @@ int simple_rename(struct inode *old_dir, struct dentry *old_dentry,
 
         if (new_dentry->d_inode) {
                 simple_unlink(new_dir, new_dentry);
-                if (they_are_dirs)
+                if (they_are_dirs) {
+                        drop_nlink(new_dentry->d_inode);
                         drop_nlink(old_dir);
+                }
         } else if (they_are_dirs) {
                 drop_nlink(old_dir);
                 inc_nlink(new_dir);
@@ -905,21 +907,29 @@ EXPORT_SYMBOL_GPL(generic_fh_to_parent);
  * filesystems which track all non-inode metadata in the buffers list
  * hanging off the address_space structure.
  */
-int generic_file_fsync(struct file *file, int datasync)
+int generic_file_fsync(struct file *file, loff_t start, loff_t end,
+                       int datasync)
 {
         struct inode *inode = file->f_mapping->host;
         int err;
         int ret;
 
+        err = filemap_write_and_wait_range(inode->i_mapping, start, end);
+        if (err)
+                return err;
+
+        mutex_lock(&inode->i_mutex);
         ret = sync_mapping_buffers(inode->i_mapping);
         if (!(inode->i_state & I_DIRTY))
-                return ret;
+                goto out;
         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
-                return ret;
+                goto out;
 
         err = sync_inode_metadata(inode, 1);
         if (ret == 0)
                 ret = err;
+out:
+        mutex_unlock(&inode->i_mutex);
         return ret;
 }
 EXPORT_SYMBOL(generic_file_fsync);
@@ -956,7 +966,7 @@ EXPORT_SYMBOL(generic_check_addressable);
 /*
  * No-op implementation of ->fsync for in-memory filesystems.
  */
-int noop_fsync(struct file *file, int datasync)
+int noop_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 {
         return 0;
 }