Merge branch 'for-chris' of

git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-work into for-linus

Conflicts:
	fs/btrfs/disk-io.c
	fs/btrfs/extent-tree.c
	fs/btrfs/free-space-cache.c
	fs/btrfs/inode.c
	fs/btrfs/transaction.c

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 6 insertions, 13 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 85e818ce00c5..74c80595d707 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -243,7 +243,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
                 ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS);
         }
 
-        trans = btrfs_join_transaction(root, 1);
+        trans = btrfs_join_transaction(root);
         BUG_ON(IS_ERR(trans));
 
         ret = btrfs_update_inode(trans, root, inode);
@@ -414,8 +414,7 @@ static noinline int create_subvol(struct btrfs_root *root,
 
         btrfs_record_root_in_trans(trans, new_root);
 
-        ret = btrfs_create_subvol_root(trans, new_root, new_dirid,
-                                       BTRFS_I(dir)->block_group);
+        ret = btrfs_create_subvol_root(trans, new_root, new_dirid);
         /*
          * insert the directory item
          */
@@ -2489,12 +2488,10 @@ static long btrfs_ioctl_trans_start(struct file *file)
         if (ret)
                 goto out;
 
-        mutex_lock(&root->fs_info->trans_mutex);
-        root->fs_info->open_ioctl_trans++;
-        mutex_unlock(&root->fs_info->trans_mutex);
+        atomic_inc(&root->fs_info->open_ioctl_trans);
 
         ret = -ENOMEM;
-        trans = btrfs_start_ioctl_transaction(root, 0);
+        trans = btrfs_start_ioctl_transaction(root);
         if (IS_ERR(trans))
                 goto out_drop;
 
@@ -2502,9 +2499,7 @@ static long btrfs_ioctl_trans_start(struct file *file)
         return 0;
 
 out_drop:
-        mutex_lock(&root->fs_info->trans_mutex);
-        root->fs_info->open_ioctl_trans--;
-        mutex_unlock(&root->fs_info->trans_mutex);
+        atomic_dec(&root->fs_info->open_ioctl_trans);
         mnt_drop_write(file->f_path.mnt);
 out:
         return ret;
@@ -2738,9 +2733,7 @@ long btrfs_ioctl_trans_end(struct file *file)
 
         btrfs_end_transaction(trans, root);
 
-        mutex_lock(&root->fs_info->trans_mutex);
-        root->fs_info->open_ioctl_trans--;
-        mutex_unlock(&root->fs_info->trans_mutex);
+        atomic_dec(&root->fs_info->open_ioctl_trans);
 
         mnt_drop_write(file->f_path.mnt);
         return 0;