From d8f035dc69b6b6cd22770150ce89366fa5a1744f Mon Sep 17 00:00:00 2001
From: Mark Poliakov <mark@alnyan.me>
Date: Thu, 2 Jan 2025 21:34:42 +0200
Subject: [PATCH] ext2: don't try freeing fastlink "blocks"

---
 kernel/driver/fs/ext2/src/inode/mod.rs | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/kernel/driver/fs/ext2/src/inode/mod.rs b/kernel/driver/fs/ext2/src/inode/mod.rs
index ec510959..62ffbf8e 100644
--- a/kernel/driver/fs/ext2/src/inode/mod.rs
+++ b/kernel/driver/fs/ext2/src/inode/mod.rs
@@ -1,6 +1,7 @@
 use core::cmp::Ordering;
 
 use libk::error::Error;
+use yggdrasil_abi::io::FileType;
 
 use crate::{
     data::{FsReadonlyFeatures, DIRECT_BLOCK_COUNT},
@@ -244,8 +245,23 @@ impl Inode {
 
         // TODO check max inode size
 
-        let new_blocks = size.div_ceil(fs.block_size as u64);
-        let old_blocks = self.size(fs).div_ceil(fs.block_size as u64);
+        let is_symlink = self
+            .mode
+            .node_type()
+            .map(|ty| ty == FileType::Symlink)
+            .unwrap_or(false);
+
+        let new_blocks = if is_symlink && size < 60 {
+            0
+        } else {
+            size.div_ceil(fs.block_size as u64)
+        };
+        // TODO check size_upper as well?
+        let old_blocks = if is_symlink && self.size_lower < 60 {
+            0
+        } else {
+            self.size(fs).div_ceil(fs.block_size as u64)
+        };
 
         if new_blocks as usize
             > DIRECT_BLOCK_COUNT