erofs: clean up parsing of fscache related options

... to avoid the mess of conditional preprocessing as we are continually
adding fscache related mount options.

Reviewd-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230112065431.124926-3-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 481788c24a68ba704bd21804f88333d5c84afe45..626a615dafc2ffa1604f155404165f76288478e1 100644 (file)
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -577,26 +577,25 @@ static int erofs_fc_parse_param(struct fs_context *fc,
                }
                ++ctx->devs->extra_devices;
                break;
-       case Opt_fsid:
 #ifdef CONFIG_EROFS_FS_ONDEMAND
+       case Opt_fsid:
                kfree(ctx->fsid);
                ctx->fsid = kstrdup(param->string, GFP_KERNEL);
                if (!ctx->fsid)
                        return -ENOMEM;
-#else
-               errorfc(fc, "fsid option not supported");
-#endif
                break;
        case Opt_domain_id:
-#ifdef CONFIG_EROFS_FS_ONDEMAND
                kfree(ctx->domain_id);
                ctx->domain_id = kstrdup(param->string, GFP_KERNEL);
                if (!ctx->domain_id)
                        return -ENOMEM;
+               break;
 #else
-               errorfc(fc, "domain_id option not supported");
-#endif
+       case Opt_fsid:
+       case Opt_domain_id:
+               errorfc(fc, "%s option not supported", erofs_fs_parameters[opt].name);
                break;
+#endif
        default:
                return -ENOPARAM;
        }