--- zzzz-none-000/linux-3.10.107/fs/9p/vfs_super.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/9p/vfs_super.c	2021-02-04 17:41:59.000000000 +0000
@@ -130,11 +130,7 @@
 	fid = v9fs_session_init(v9ses, dev_name, data);
 	if (IS_ERR(fid)) {
 		retval = PTR_ERR(fid);
-		/*
-		 * we need to call session_close to tear down some
-		 * of the data structure setup by session_init
-		 */
-		goto close_session;
+		goto free_session;
 	}
 
 	sb = sget(fs_type, NULL, v9fs_set_super, flags, v9ses);
@@ -144,7 +140,7 @@
 	}
 	v9fs_fill_super(sb, v9ses, flags, data);
 
-	if (v9ses->cache)
+	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
 		sb->s_d_op = &v9fs_cached_dentry_operations;
 	else
 		sb->s_d_op = &v9fs_dentry_operations;
@@ -168,8 +164,8 @@
 			retval = PTR_ERR(st);
 			goto release_sb;
 		}
-		root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
-		v9fs_stat2inode_dotl(st, root->d_inode);
+		d_inode(root)->i_ino = v9fs_qid2ino(&st->qid);
+		v9fs_stat2inode_dotl(st, d_inode(root));
 		kfree(st);
 	} else {
 		struct p9_wstat *st = NULL;
@@ -179,8 +175,8 @@
 			goto release_sb;
 		}
 
-		root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
-		v9fs_stat2inode(st, root->d_inode, sb);
+		d_inode(root)->i_ino = v9fs_qid2ino(&st->qid);
+		v9fs_stat2inode(st, d_inode(root), sb);
 
 		p9stat_free(st);
 		kfree(st);
@@ -195,8 +191,8 @@
 
 clunk_fid:
 	p9_client_clunk(fid);
-close_session:
 	v9fs_session_close(v9ses);
+free_session:
 	kfree(v9ses);
 	return ERR_PTR(retval);
 
@@ -282,7 +278,7 @@
 {
 	struct v9fs_session_info *v9ses;
 	v9ses = v9fs_inode2v9ses(inode);
-	if (v9ses->cache)
+	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
 		return generic_drop_inode(inode);
 	/*
 	 * in case of non cached mode always drop the
@@ -325,10 +321,12 @@
 	 * send an fsync request to server irrespective of
 	 * wbc->sync_mode.
 	 */
-	p9_debug(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
 	v9inode = V9FS_I(inode);
+	p9_debug(P9_DEBUG_VFS, "%s: inode %p, writeback_fid %p\n",
+		 __func__, inode, v9inode->writeback_fid);
 	if (!v9inode->writeback_fid)
 		return 0;
+
 	ret = p9_client_fsync(v9inode->writeback_fid, 0);
 	if (ret < 0) {
 		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);