diff --git a/Cargo.toml b/Cargo.toml
index 74215c2f..fa55e65d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "skl"
-version = "0.11.2"
+version = "0.11.4"
 edition = "2021"
 rust-version = "1.56.0"
 repository = "https://github.com/al8n/skl"
diff --git a/src/lib.rs b/src/lib.rs
index 2e2adc60..064762a6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,9 +30,10 @@ pub use options::{MmapOptions, OpenOptions};
 mod types;
 pub use types::*;
 
-pub use rarena_allocator::{Arena, Error as ArenaError};
-
+pub use either;
 pub use map::{AllVersionsIter, SkipMap};
+pub use rarena_allocator::{Arena, Error as ArenaError};
+pub use ux2::{u27, u5};
 
 pub use ux2::{u27, u5};
 
diff --git a/src/map.rs b/src/map.rs
index a0d7d428..adc9e6b3 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -287,7 +287,7 @@ impl<T> NodePtr<T> {
   ///
   /// - The caller must ensure that the node is allocated by the arena.
   /// - The caller must ensure that the offset is less than the capacity of the arena and larger than 0.
-  unsafe fn cas_next_offset_weak(
+  unsafe fn cas_next_offset(
     &self,
     arena: &Arena,
     idx: usize,
@@ -296,11 +296,10 @@ impl<T> NodePtr<T> {
     success: Ordering,
     failure: Ordering,
   ) -> Result<u32, u32> {
-    #[cfg(not(feature = "unaligned"))]
     self
       .tower(arena, idx)
       .next_offset
-      .compare_exchange_weak(current, new, success, failure)
+      .compare_exchange(current, new, success, failure)
   }
 }
 
@@ -1864,7 +1863,7 @@ impl<T: Trailer, C: Comparator> SkipMap<T, C> {
             }
           }
 
-          match prev.cas_next_offset_weak(
+          match prev.cas_next_offset(
             &self.arena,
             i,
             next.offset,
diff --git a/src/map/api.rs b/src/map/api.rs
index 924af42a..43a18551 100644
--- a/src/map/api.rs
+++ b/src/map/api.rs
@@ -3,7 +3,7 @@ use ux2::u27;
 
 use super::*;
 
-impl SkipMap {
+impl<T> SkipMap<T> {
   /// Create a new skipmap with default options.
   ///
   /// **Note:** The capacity stands for how many memory allocated,
diff --git a/src/map/tests.rs b/src/map/tests.rs
index 3750f3a7..1d317fc0 100644
--- a/src/map/tests.rs
+++ b/src/map/tests.rs
@@ -5,6 +5,7 @@ use std::format;
 
 use std::sync::Arc;
 
+use rarena_allocator::Freelist;
 #[cfg(feature = "std")]
 use wg::WaitGroup;
 
@@ -180,12 +181,30 @@ fn full_in(l: impl FnOnce(usize) -> SkipMap) {
 
 #[test]
 fn test_full() {
-  run(|| full_in(|n| SkipMap::with_options(Options::new().with_capacity(n as u32)).unwrap()))
+  run(|| {
+    full_in(|n| {
+      SkipMap::with_options(
+        Options::new()
+          .with_capacity(n as u32)
+          .with_freelist(Freelist::None),
+      )
+      .unwrap()
+    })
+  })
 }
 
 #[test]
 fn test_full_unify() {
-  run(|| full_in(|n| SkipMap::with_options(UNIFY_TEST_OPTIONS.with_capacity(n as u32)).unwrap()))
+  run(|| {
+    full_in(|n| {
+      SkipMap::with_options(
+        UNIFY_TEST_OPTIONS
+          .with_capacity(n as u32)
+          .with_freelist(Freelist::None),
+      )
+      .unwrap()
+    })
+  })
 }
 
 #[test]
@@ -202,7 +221,13 @@ fn test_full_map_mut() {
         .read(true)
         .write(true);
       let map_options = MmapOptions::default();
-      SkipMap::map_mut(p, open_options, map_options).unwrap()
+      SkipMap::map_mut_with_options(
+        p,
+        Options::new().with_freelist(Freelist::None),
+        open_options,
+        map_options,
+      )
+      .unwrap()
     });
   })
 }
@@ -213,7 +238,8 @@ fn test_full_map_anon() {
   run(|| {
     full_in(|n| {
       let map_options = MmapOptions::default().len(n as u32);
-      SkipMap::map_anon(map_options).unwrap()
+      SkipMap::map_anon_with_options(Options::new().with_freelist(Freelist::None), map_options)
+        .unwrap()
     });
   })
 }
@@ -224,7 +250,8 @@ fn test_full_map_anon_unify() {
   run(|| {
     full_in(|n| {
       let map_options = MmapOptions::default().len(n as u32);
-      SkipMap::map_anon_with_options(TEST_OPTIONS, map_options).unwrap()
+      SkipMap::map_anon_with_options(Options::new().with_freelist(Freelist::None), map_options)
+        .unwrap()
     });
   })
 }
@@ -2265,8 +2292,7 @@ fn test_reopen_mmap() {
       let open_options = OpenOptions::default()
         .create(Some(ARENA_SIZE as u32))
         .read(true)
-        .write(true)
-        .lock_exclusive(true);
+        .write(true);
       let map_options = MmapOptions::default();
       let l = SkipMap::map_mut(&p, open_options, map_options).unwrap();
       for i in 0..1000 {
@@ -2275,12 +2301,9 @@ fn test_reopen_mmap() {
       l.flush().unwrap();
     }
 
-    let open_options = OpenOptions::default()
-      .read(true)
-      .lock_shared(true)
-      .shrink_on_drop(true);
+    let open_options = OpenOptions::default().read(true).shrink_on_drop(true);
     let map_options = MmapOptions::default();
-    let l = SkipMap::map(&p, open_options, map_options, 0).unwrap();
+    let l = SkipMap::<u64>::map(&p, open_options, map_options, 0).unwrap();
     assert_eq!(1000, l.len());
     for i in 0..1000 {
       let k = key(i);
@@ -2305,8 +2328,7 @@ fn test_reopen_mmap2() {
       let open_options = OpenOptions::default()
         .create(Some(ARENA_SIZE as u32))
         .read(true)
-        .write(true)
-        .lock_shared(true);
+        .write(true);
       let map_options = MmapOptions::default();
       let l = SkipMap::map_mut_with_comparator(&p, open_options, map_options, Ascend).unwrap();
       let mut data = (0..1000).collect::<Vec<usize>>();