diff --git a/crates/librqbit/Cargo.toml b/crates/librqbit/Cargo.toml
index fbe02fc..75db80e 100644
--- a/crates/librqbit/Cargo.toml
+++ b/crates/librqbit/Cargo.toml
@@ -58,7 +58,6 @@ tracing-subscriber = { version = "0.3", default-features = false, features = [
     "fmt",
     "env-filter",
 ] }
-
 uuid = { version = "1.2", features = ["v4"] }
 futures = "0.3"
 url = "2"
@@ -71,6 +70,7 @@ tokio-util = "0.7.10"
 bytes = "1.5.0"
 rlimit = "0.10.1"
 async-stream = "0.3.5"
+memmap2 = "0.9.4"
 
 [dev-dependencies]
 futures = { version = "0.3" }
@@ -78,4 +78,3 @@ tracing-subscriber = "0.3"
 tokio-test = "0.4"
 tempfile = "3"
 rand = { version = "0.8", features = ["small_rng"] }
-memmap2 = "0.9.4"
diff --git a/crates/librqbit/examples/custom_storage.rs b/crates/librqbit/examples/custom_storage.rs
index ee3330a..f0fa5a4 100644
--- a/crates/librqbit/examples/custom_storage.rs
+++ b/crates/librqbit/examples/custom_storage.rs
@@ -1,67 +1,8 @@
 use std::time::Duration;
 
-use anyhow::Context;
-use librqbit::{
-    storage::{StorageFactory, TorrentStorage},
-    FileInfos, ManagedTorrentInfo, SessionOptions,
-};
-use memmap2::{MmapMut, MmapOptions};
-use parking_lot::RwLock;
+use librqbit::{storage::mmap::MmapStorageFactory, SessionOptions};
 use tracing::info;
 
-struct MmapStorageFactory {}
-
-struct MmapStorage {
-    mmap: RwLock<MmapMut>,
-    file_infos: FileInfos,
-}
-
-impl StorageFactory for MmapStorageFactory {
-    fn init_storage(
-        &self,
-        info: &ManagedTorrentInfo,
-    ) -> anyhow::Result<Box<dyn librqbit::storage::TorrentStorage>> {
-        Ok(Box::new(MmapStorage {
-            mmap: RwLock::new(
-                MmapOptions::new()
-                    .len(info.lengths.total_length().try_into()?)
-                    .map_anon()?,
-            ),
-            file_infos: info.file_infos.clone(),
-        }))
-    }
-}
-
-impl TorrentStorage for MmapStorage {
-    fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()> {
-        let start: usize = (self.file_infos[file_id].offset_in_torrent + offset).try_into()?;
-        let end = start + buf.len();
-        buf.copy_from_slice(self.mmap.read().get(start..end).context("bad range")?);
-        Ok(())
-    }
-
-    fn pwrite_all(&self, file_id: usize, offset: u64, buf: &[u8]) -> anyhow::Result<()> {
-        let start: usize = (self.file_infos[file_id].offset_in_torrent + offset).try_into()?;
-        let end = start + buf.len();
-        let mut g = self.mmap.write();
-        let target = g.get_mut(start..end).context("bad range")?;
-        target.copy_from_slice(buf);
-        Ok(())
-    }
-
-    fn remove_file(&self, _file_id: usize, _filename: &std::path::Path) -> anyhow::Result<()> {
-        Ok(())
-    }
-
-    fn ensure_file_length(&self, _file_id: usize, _length: u64) -> anyhow::Result<()> {
-        Ok(())
-    }
-
-    fn take(&self) -> anyhow::Result<Box<dyn TorrentStorage>> {
-        anyhow::bail!("not implemented")
-    }
-}
-
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     // Output logs to console.
diff --git a/crates/librqbit/src/storage/mmap.rs b/crates/librqbit/src/storage/mmap.rs
new file mode 100644
index 0000000..dbd1ee2
--- /dev/null
+++ b/crates/librqbit/src/storage/mmap.rs
@@ -0,0 +1,60 @@
+use anyhow::Context;
+use memmap2::{MmapMut, MmapOptions};
+use parking_lot::RwLock;
+
+use crate::{FileInfos, ManagedTorrentInfo};
+
+use super::{StorageFactory, TorrentStorage};
+
+pub struct MmapStorageFactory {}
+
+struct MmapStorage {
+    mmap: RwLock<MmapMut>,
+    file_infos: FileInfos,
+}
+
+impl StorageFactory for MmapStorageFactory {
+    fn init_storage(
+        &self,
+        info: &ManagedTorrentInfo,
+    ) -> anyhow::Result<Box<dyn crate::storage::TorrentStorage>> {
+        Ok(Box::new(MmapStorage {
+            mmap: RwLock::new(
+                MmapOptions::new()
+                    .len(info.lengths.total_length().try_into()?)
+                    .map_anon()?,
+            ),
+            file_infos: info.file_infos.clone(),
+        }))
+    }
+}
+
+impl TorrentStorage for MmapStorage {
+    fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()> {
+        let start: usize = (self.file_infos[file_id].offset_in_torrent + offset).try_into()?;
+        let end = start + buf.len();
+        buf.copy_from_slice(self.mmap.read().get(start..end).context("bad range")?);
+        Ok(())
+    }
+
+    fn pwrite_all(&self, file_id: usize, offset: u64, buf: &[u8]) -> anyhow::Result<()> {
+        let start: usize = (self.file_infos[file_id].offset_in_torrent + offset).try_into()?;
+        let end = start + buf.len();
+        let mut g = self.mmap.write();
+        let target = g.get_mut(start..end).context("bad range")?;
+        target.copy_from_slice(buf);
+        Ok(())
+    }
+
+    fn remove_file(&self, _file_id: usize, _filename: &std::path::Path) -> anyhow::Result<()> {
+        Ok(())
+    }
+
+    fn ensure_file_length(&self, _file_id: usize, _length: u64) -> anyhow::Result<()> {
+        Ok(())
+    }
+
+    fn take(&self) -> anyhow::Result<Box<dyn TorrentStorage>> {
+        anyhow::bail!("not implemented")
+    }
+}
diff --git a/crates/librqbit/src/storage/mod.rs b/crates/librqbit/src/storage/mod.rs
index 1a22c25..9401385 100644
--- a/crates/librqbit/src/storage/mod.rs
+++ b/crates/librqbit/src/storage/mod.rs
@@ -1,5 +1,6 @@
 pub mod example;
 pub mod filesystem;
+pub mod mmap;
 
 use std::{any::Any, path::Path};