Q: Given the following code slice:
```
1 void v9fs_evict_inode(struct inode *inode)
2 {
3 	struct v9fs_inode __maybe_unused *v9inode = V9FS_I(inode);
4 	__le32 __maybe_unused version;
5 
6 	truncate_inode_pages_final(&inode->i_data);
7 
8 	version = cpu_to_le32(v9inode->qid.version);
9 	netfs_clear_inode_writeback(inode, &version);
10 
11 	clear_inode(inode);
12 	filemap_fdatawrite(&inode->i_data);
13 
14 #ifdef CONFIG_9P_FSCACHE
15 	fscache_relinquish_cookie(v9fs_inode_cookie(v9inode), false);
16 #endif
17 }
```
which has a vulnerability among CWE-787 and among lines:
```
12 	filemap_fdatawrite(&inode->i_data);
```
Please generate five possible patches for the vulnerability.