Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-block.git] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 68ee619fff4528c32066a96599e04849594c72ef..9e66f5e724db1e307f19f74df7862550c170f069 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -901,6 +901,15 @@ find_root:
        if (IS_ERR(new_root))
                return ERR_CAST(new_root);
 
+       if (!(sb->s_flags & MS_RDONLY)) {
+               int ret;
+               down_read(&fs_info->cleanup_work_sem);
+               ret = btrfs_orphan_cleanup(new_root);
+               up_read(&fs_info->cleanup_work_sem);
+               if (ret)
+                       return ERR_PTR(ret);
+       }
+
        dir_id = btrfs_root_dirid(&new_root->root_item);
 setup_root:
        location.objectid = dir_id;
@@ -1714,7 +1723,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
                avail_space = device->total_bytes - device->bytes_used;
 
                /* align with stripe_len */
-               do_div(avail_space, BTRFS_STRIPE_LEN);
+               avail_space = div_u64(avail_space, BTRFS_STRIPE_LEN);
                avail_space *= BTRFS_STRIPE_LEN;
 
                /*
@@ -1908,6 +1917,17 @@ static struct file_system_type btrfs_fs_type = {
 };
 MODULE_ALIAS_FS("btrfs");
 
+static int btrfs_control_open(struct inode *inode, struct file *file)
+{
+       /*
+        * The control file's private_data is used to hold the
+        * transaction when it is started and is used to keep
+        * track of whether a transaction is already in progress.
+        */
+       file->private_data = NULL;
+       return 0;
+}
+
 /*
  * used by btrfsctl to scan devices when no FS is mounted
  */
@@ -2009,6 +2029,7 @@ static const struct super_operations btrfs_super_ops = {
 };
 
 static const struct file_operations btrfs_ctl_fops = {
+       .open = btrfs_control_open,
        .unlocked_ioctl  = btrfs_control_ioctl,
        .compat_ioctl = btrfs_control_ioctl,
        .owner   = THIS_MODULE,