Revert "ksud: determine modules's size by checking partion size"

This reverts commit c40bfd694c.

userspace/ksud_overlayfs/Cargo.lock

@@ -598,16 +598,6 @@ dependencies = [
  "miniz_oxide",
 ]
 
-[[package]]
-name = "fs4"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be058769cf1633370c3d0dac6bb9b223b8f18900cf808abadf7843192e706238"
-dependencies = [
- "rustix 0.38.44",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -816,7 +806,6 @@ dependencies = [
  "encoding_rs",
  "env_logger",
  "extattr",
- "fs4",
  "getopts",
  "hole-punch",
  "humansize",

userspace/ksud_overlayfs/Cargo.toml

@@ -41,7 +41,6 @@ tempfile = "3"
 chrono = "0.4"
 hole-punch = { git = "https://github.com/tiann/hole-punch" }
 regex-lite = "0.1"
-fs4 = "0.13"
 
 [target.'cfg(any(target_os = "android", target_os = "linux"))'.dependencies]
 rustix = { git = "https://github.com/Kernel-SU/rustix.git", branch = "main", features = [

userspace/ksud_overlayfs/src/module.rs

@@ -376,8 +376,7 @@ fn _install_module(zip: &str) -> Result<()> {
         humansize::format_size(zip_uncompressed_size, humansize::DECIMAL)
     );
 
-    let data_vfs = fs4::statvfs("/data").with_context(|| "Failed to stat /data".to_string())?;
-    let sparse_image_size = data_vfs.total_space();
+    let sparse_image_size = 6 << 30; // 6GB
     if !modules_img_exist && !modules_update_img_exist {
         // if no modules and modules_update, it is brand new installation, we should create a new img
         // create a tmp module img and mount it to modules_update