btrfs: pass btrfs_inode to btrfs_truncate

The function is for internal interfaces so we should use the
btrfs_inode.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -124,7 +124,7 @@ static const struct file_operations btrfs_dir_file_operations;
 static struct kmem_cache *btrfs_inode_cachep;
 
 static int btrfs_setsize(struct inode *inode, struct iattr *attr);
-static int btrfs_truncate(struct inode *inode, bool skip_writeback);
+static int btrfs_truncate(struct btrfs_inode *inode, bool skip_writeback);
 static noinline int cow_file_range(struct btrfs_inode *inode,
 				   struct page *locked_page,
 				   u64 start, u64 end, int *page_started,
@@ -5270,7 +5270,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
 
 		inode_dio_wait(inode);
 
-		ret = btrfs_truncate(inode, newsize == oldsize);
+		ret = btrfs_truncate(BTRFS_I(inode), newsize == oldsize);
 		if (ret && inode->i_nlink) {
 			int err;
 
@@ -8632,16 +8632,16 @@ vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf)
 	return ret;
 }
 
-static int btrfs_truncate(struct inode *inode, bool skip_writeback)
+static int btrfs_truncate(struct btrfs_inode *inode, bool skip_writeback)
 {
 	struct btrfs_truncate_control control = {
-		.inode = BTRFS_I(inode),
-		.ino = btrfs_ino(BTRFS_I(inode)),
+		.inode = inode,
+		.ino = btrfs_ino(inode),
 		.min_type = BTRFS_EXTENT_DATA_KEY,
 		.clear_extent_range = true,
 	};
-	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
-	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_root *root = inode->root;
+	struct btrfs_fs_info *fs_info = root->fs_info;
 	struct btrfs_block_rsv *rsv;
 	int ret;
 	struct btrfs_trans_handle *trans;
@@ -8649,7 +8649,8 @@ static int btrfs_truncate(struct inode *inode, bool skip_writeback)
 	u64 min_size = btrfs_calc_metadata_size(fs_info, 1);
 
 	if (!skip_writeback) {
-		ret = btrfs_wait_ordered_range(inode, inode->i_size & (~mask),
+		ret = btrfs_wait_ordered_range(&inode->vfs_inode,
+					       inode->vfs_inode.i_size & (~mask),
 					       (u64)-1);
 		if (ret)
 			return ret;
@@ -8708,34 +8709,32 @@ static int btrfs_truncate(struct inode *inode, bool skip_writeback)
 
 	while (1) {
 		struct extent_state *cached_state = NULL;
-		const u64 new_size = inode->i_size;
+		const u64 new_size = inode->vfs_inode.i_size;
 		const u64 lock_start = ALIGN_DOWN(new_size, fs_info->sectorsize);
 
 		control.new_size = new_size;
-		lock_extent(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
-				 &cached_state);
+		lock_extent(&inode->io_tree, lock_start, (u64)-1, &cached_state);
 		/*
 		 * We want to drop from the next block forward in case this new
 		 * size is not block aligned since we will be keeping the last
 		 * block of the extent just the way it is.
 		 */
-		btrfs_drop_extent_map_range(BTRFS_I(inode),
+		btrfs_drop_extent_map_range(inode,
 					    ALIGN(new_size, fs_info->sectorsize),
 					    (u64)-1, false);
 
 		ret = btrfs_truncate_inode_items(trans, root, &control);
 
-		inode_sub_bytes(inode, control.sub_bytes);
-		btrfs_inode_safe_disk_i_size_write(BTRFS_I(inode), control.last_size);
+		inode_sub_bytes(&inode->vfs_inode, control.sub_bytes);
+		btrfs_inode_safe_disk_i_size_write(inode, control.last_size);
 
-		unlock_extent(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
-			      &cached_state);
+		unlock_extent(&inode->io_tree, lock_start, (u64)-1, &cached_state);
 
 		trans->block_rsv = &fs_info->trans_block_rsv;
 		if (ret != -ENOSPC && ret != -EAGAIN)
 			break;
 
-		ret = btrfs_update_inode(trans, root, BTRFS_I(inode));
+		ret = btrfs_update_inode(trans, root, inode);
 		if (ret)
 			break;
 
@@ -8766,7 +8765,7 @@ static int btrfs_truncate(struct inode *inode, bool skip_writeback)
 		btrfs_end_transaction(trans);
 		btrfs_btree_balance_dirty(fs_info);
 
-		ret = btrfs_truncate_block(BTRFS_I(inode), inode->i_size, 0, 0);
+		ret = btrfs_truncate_block(inode, inode->vfs_inode.i_size, 0, 0);
 		if (ret)
 			goto out;
 		trans = btrfs_start_transaction(root, 1);
@@ -8774,14 +8773,14 @@ static int btrfs_truncate(struct inode *inode, bool skip_writeback)
 			ret = PTR_ERR(trans);
 			goto out;
 		}
-		btrfs_inode_safe_disk_i_size_write(BTRFS_I(inode), 0);
+		btrfs_inode_safe_disk_i_size_write(inode, 0);
 	}
 
 	if (trans) {
 		int ret2;
 
 		trans->block_rsv = &fs_info->trans_block_rsv;
-		ret2 = btrfs_update_inode(trans, root, BTRFS_I(inode));
+		ret2 = btrfs_update_inode(trans, root, inode);
 		if (ret2 && !ret)
 			ret = ret2;
 
@@ -8807,7 +8806,7 @@ static int btrfs_truncate(struct inode *inode, bool skip_writeback)
 	 * extents beyond i_size to drop.
 	 */
 	if (control.extents_found > 0)
-		btrfs_set_inode_full_sync(BTRFS_I(inode));
+		btrfs_set_inode_full_sync(inode);
 
 	return ret;
 }