btrfs: add inode to truncate control

In the future we're going to want to use btrfs_truncate_inode_items
without looking up the associated inode.  In order to accommodate this
add the inode to btrfs_truncate_control and handle the case where
control->inode is NULL appropriately.  This is fairly straightforward,
we simply need to add a helper for the trace points, as the file extent
map update is controlled by a flag on btrfs_truncate_control.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/fs/btrfs/inode-item.h b/fs/btrfs/inode-item.h
index b0dc14efde30..a8fc16d0147f 100644
--- a/fs/btrfs/inode-item.h
+++ b/fs/btrfs/inode-item.h
@@ -20,6 +20,12 @@ struct extent_buffer;
 #define BTRFS_NEED_TRUNCATE_BLOCK		1
 
 struct btrfs_truncate_control {
+	/*
+	 * IN: the inode we're operating on, this can be NULL if
+	 * ->clear_extent_range is false.
+	 */
+	struct btrfs_inode *inode;
+
 	/* IN: the size we're truncating to. */
 	u64 new_size;
 
@@ -56,7 +62,6 @@ struct btrfs_truncate_control {
 
 int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
 			       struct btrfs_root *root,
-			       struct btrfs_inode *inode,
 			       struct btrfs_truncate_control *control);
 int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,