libata: separate out ata_host_start()

[powerpc.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index 47e554c..8341e4e 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -220,6 +220,24 @@ static int grab_super(struct super_block *s) __releases(sb_lock)
        return 0;
 }
 
+/*
+ * Superblock locking.  We really ought to get rid of these two.
+ */
+void lock_super(struct super_block * sb)
+{
+       get_fs_excl();
+       mutex_lock(&sb->s_lock);
+}
+
+void unlock_super(struct super_block * sb)
+{
+       put_fs_excl();
+       mutex_unlock(&sb->s_lock);
+}
+
+EXPORT_SYMBOL(lock_super);
+EXPORT_SYMBOL(unlock_super);
+
 /*
  * Write out and wait upon all dirty data associated with this
  * superblock.  Filesystem data as well as the underlying block
@@ -267,7 +285,7 @@ int fsync_super(struct super_block *sb)
  */
 void generic_shutdown_super(struct super_block *sb)
 {
-       struct super_operations *sop = sb->s_op;
+       const struct super_operations *sop = sb->s_op;
 
        if (sb->s_root) {
                shrink_dcache_for_umount(sb);
@@ -552,7 +570,7 @@ static void mark_files_ro(struct super_block *sb)
 
        file_list_lock();
        list_for_each_entry(f, &sb->s_files, f_u.fu_list) {
-               if (S_ISREG(f->f_dentry->d_inode->i_mode) && file_count(f))
+               if (S_ISREG(f->f_path.dentry->d_inode->i_mode) && file_count(f))
                        f->f_mode &= ~FMODE_WRITE;
        }
        file_list_unlock();
@@ -707,16 +725,6 @@ static int test_bdev_super(struct super_block *s, void *data)
        return (void *)s->s_bdev == data;
 }
 
-static void bdev_uevent(struct block_device *bdev, enum kobject_action action)
-{
-       if (bdev->bd_disk) {
-               if (bdev->bd_part)
-                       kobject_uevent(&bdev->bd_part->kobj, action);
-               else
-                       kobject_uevent(&bdev->bd_disk->kobj, action);
-       }
-}
-
 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),
@@ -735,9 +743,9 @@ int get_sb_bdev(struct file_system_type *fs_type,
         * will protect the lockfs code from trying to start a snapshot
         * while we are mounting
         */
-       mutex_lock(&bdev->bd_mount_mutex);
+       down(&bdev->bd_mount_sem);
        s = sget(fs_type, test_bdev_super, set_bdev_super, bdev);
-       mutex_unlock(&bdev->bd_mount_mutex);
+       up(&bdev->bd_mount_sem);
        if (IS_ERR(s))
                goto error_s;
 
@@ -764,7 +772,6 @@ int get_sb_bdev(struct file_system_type *fs_type,
                }
 
                s->s_flags |= MS_ACTIVE;
-               bdev_uevent(bdev, KOBJ_MOUNT);
        }
 
        return simple_set_mnt(mnt, s);
@@ -783,7 +790,6 @@ void kill_block_super(struct super_block *sb)
 {
        struct block_device *bdev = sb->s_bdev;
 
-       bdev_uevent(bdev, KOBJ_UMOUNT);
        generic_shutdown_super(sb);
        sync_blockdev(bdev);
        close_bdev_excl(bdev);