1 files changed, 84 insertions, 35 deletions

diff --git a/fs/super.c b/fs/super.c
index 8819e3a7ff20..ca696155cd9a 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -273,14 +273,14 @@ void generic_shutdown_super(struct super_block *sb)
                 get_fs_excl();
                 sb->s_flags &= ~MS_ACTIVE;
 
-                /* bad name - it should be evict_inodes() */
-                invalidate_inodes(sb);
+                fsnotify_unmount_inodes(&sb->s_inodes);
+
+                evict_inodes(sb);
 
                 if (sop->put_super)
                         sop->put_super(sb);
 
-                /* Forget any remaining inodes */
-                if (invalidate_inodes(sb)) {
+                if (!list_empty(&sb->s_inodes)) {
                         printk("VFS: Busy inodes after unmount of %s. "
                            "Self-destruct in 5 seconds.  Have a nice day...\n",
                            sb->s_id);
@@ -715,15 +715,14 @@ static int ns_set_super(struct super_block *sb, void *data)
         return set_anon_super(sb, NULL);
 }
 
-int get_sb_ns(struct file_system_type *fs_type, int flags, void *data,
-        int (*fill_super)(struct super_block *, void *, int),
-        struct vfsmount *mnt)
+struct dentry *mount_ns(struct file_system_type *fs_type, int flags,
+        void *data, int (*fill_super)(struct super_block *, void *, int))
 {
         struct super_block *sb;
 
         sb = sget(fs_type, ns_test_super, ns_set_super, data);
         if (IS_ERR(sb))
-                return PTR_ERR(sb);
+                return ERR_CAST(sb);
 
         if (!sb->s_root) {
                 int err;
@@ -731,17 +730,16 @@ int get_sb_ns(struct file_system_type *fs_type, int flags, void *data,
                 err = fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
                 if (err) {
                         deactivate_locked_super(sb);
-                        return err;
+                        return ERR_PTR(err);
                 }
 
                 sb->s_flags |= MS_ACTIVE;
         }
 
-        simple_set_mnt(mnt, sb);
-        return 0;
+        return dget(sb->s_root);
 }
 
-EXPORT_SYMBOL(get_sb_ns);
+EXPORT_SYMBOL(mount_ns);
 
 #ifdef CONFIG_BLOCK
 static int set_bdev_super(struct super_block *s, void *data)
@@ -762,10 +760,9 @@ static int test_bdev_super(struct super_block *s, void *data)
         return (void *)s->s_bdev == data;
 }
 
-int get_sb_bdev(struct file_system_type *fs_type,
+struct dentry *mount_bdev(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data,
-        int (*fill_super)(struct super_block *, void *, int),
-        struct vfsmount *mnt)
+        int (*fill_super)(struct super_block *, void *, int))
 {
         struct block_device *bdev;
         struct super_block *s;
@@ -777,7 +774,7 @@ int get_sb_bdev(struct file_system_type *fs_type,
 
         bdev = open_bdev_exclusive(dev_name, mode, fs_type);
         if (IS_ERR(bdev))
-                return PTR_ERR(bdev);
+                return ERR_CAST(bdev);
 
         /*
          * once the super is inserted into the list by sget, s_umount
@@ -829,15 +826,30 @@ int get_sb_bdev(struct file_system_type *fs_type,
                 bdev->bd_super = s;
         }
 
-        simple_set_mnt(mnt, s);
-        return 0;
+        return dget(s->s_root);
 
 error_s:
         error = PTR_ERR(s);
 error_bdev:
         close_bdev_exclusive(bdev, mode);
 error:
-        return error;
+        return ERR_PTR(error);
+}
+EXPORT_SYMBOL(mount_bdev);
+
+int get_sb_bdev(struct file_system_type *fs_type,
+        int flags, const char *dev_name, void *data,
+        int (*fill_super)(struct super_block *, void *, int),
+        struct vfsmount *mnt)
+{
+        struct dentry *root;
+
+        root = mount_bdev(fs_type, flags, dev_name, data, fill_super);
+        if (IS_ERR(root))
+                return PTR_ERR(root);
+        mnt->mnt_root = root;
+        mnt->mnt_sb = root->d_sb;
+        return 0;
 }
 
 EXPORT_SYMBOL(get_sb_bdev);
@@ -856,29 +868,42 @@ void kill_block_super(struct super_block *sb)
 EXPORT_SYMBOL(kill_block_super);
 #endif
 
-int get_sb_nodev(struct file_system_type *fs_type,
+struct dentry *mount_nodev(struct file_system_type *fs_type,
         int flags, void *data,
-        int (*fill_super)(struct super_block *, void *, int),
-        struct vfsmount *mnt)
+        int (*fill_super)(struct super_block *, void *, int))
 {
         int error;
         struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
 
         if (IS_ERR(s))
-                return PTR_ERR(s);
+                return ERR_CAST(s);
 
         s->s_flags = flags;
 
         error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
         if (error) {
                 deactivate_locked_super(s);
-                return error;
+                return ERR_PTR(error);
         }
         s->s_flags |= MS_ACTIVE;
-        simple_set_mnt(mnt, s);
-        return 0;
+        return dget(s->s_root);
 }
+EXPORT_SYMBOL(mount_nodev);
+
+int get_sb_nodev(struct file_system_type *fs_type,
+        int flags, void *data,
+        int (*fill_super)(struct super_block *, void *, int),
+        struct vfsmount *mnt)
+{
+        struct dentry *root;
 
+        root = mount_nodev(fs_type, flags, data, fill_super);
+        if (IS_ERR(root))
+                return PTR_ERR(root);
+        mnt->mnt_root = root;
+        mnt->mnt_sb = root->d_sb;
+        return 0;
+}
 EXPORT_SYMBOL(get_sb_nodev);
 
 static int compare_single(struct super_block *s, void *p)
@@ -886,29 +911,42 @@ static int compare_single(struct super_block *s, void *p)
         return 1;
 }
 
-int get_sb_single(struct file_system_type *fs_type,
+struct dentry *mount_single(struct file_system_type *fs_type,
         int flags, void *data,
-        int (*fill_super)(struct super_block *, void *, int),
-        struct vfsmount *mnt)
+        int (*fill_super)(struct super_block *, void *, int))
 {
         struct super_block *s;
         int error;
 
         s = sget(fs_type, compare_single, set_anon_super, NULL);
         if (IS_ERR(s))
-                return PTR_ERR(s);
+                return ERR_CAST(s);
         if (!s->s_root) {
                 s->s_flags = flags;
                 error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
                 if (error) {
                         deactivate_locked_super(s);
-                        return error;
+                        return ERR_PTR(error);
                 }
                 s->s_flags |= MS_ACTIVE;
         } else {
                 do_remount_sb(s, flags, data, 0);
         }
-        simple_set_mnt(mnt, s);
+        return dget(s->s_root);
+}
+EXPORT_SYMBOL(mount_single);
+
+int get_sb_single(struct file_system_type *fs_type,
+        int flags, void *data,
+        int (*fill_super)(struct super_block *, void *, int),
+        struct vfsmount *mnt)
+{
+        struct dentry *root;
+        root = mount_single(fs_type, flags, data, fill_super);
+        if (IS_ERR(root))
+                return PTR_ERR(root);
+        mnt->mnt_root = root;
+        mnt->mnt_sb = root->d_sb;
         return 0;
 }
 
@@ -918,6 +956,7 @@ struct vfsmount *
 vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data)
 {
         struct vfsmount *mnt;
+        struct dentry *root;
         char *secdata = NULL;
         int error;
 
@@ -942,9 +981,19 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
                         goto out_free_secdata;
         }
 
-        error = type->get_sb(type, flags, name, data, mnt);
-        if (error < 0)
-                goto out_free_secdata;
+        if (type->mount) {
+                root = type->mount(type, flags, name, data);
+                if (IS_ERR(root)) {
+                        error = PTR_ERR(root);
+                        goto out_free_secdata;
+                }
+                mnt->mnt_root = root;
+                mnt->mnt_sb = root->d_sb;
+        } else {
+                error = type->get_sb(type, flags, name, data, mnt);
+                if (error < 0)
+                        goto out_free_secdata;
+        }
         BUG_ON(!mnt->mnt_sb);
         WARN_ON(!mnt->mnt_sb->s_bdi);
         mnt->mnt_sb->s_flags |= MS_BORN;