cifs: cache FILE_ALL_INFO for the shared root handle

[platform/kernel/linux-rpi.git] / fs / cifs / smb2inode.c

diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 01a76bc..b6e07e2 100644 (file)
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -309,12 +309,17 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
                rc = open_shroot(xid, tcon, &fid);
                if (rc)
                        goto out;
-               rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
-                                    fid.volatile_fid, smb2_data);
+
+               if (tcon->crfid.file_all_info_is_valid) {
+                       move_smb2_info_to_cifs(data,
+                                              &tcon->crfid.file_all_info);
+               } else {
+                       rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
+                                            fid.volatile_fid, smb2_data);
+                       if (!rc)
+                               move_smb2_info_to_cifs(data, smb2_data);
+               }
                close_shroot(&tcon->crfid);
-               if (rc)
-                       goto out;
-               move_smb2_info_to_cifs(data, smb2_data);
                goto out;
        }