diff --git a/rustcryptfs-fuse/src/encrypted_filesystem.rs b/rustcryptfs-fuse/src/encrypted_filesystem.rs
index 7179368..c2de11d 100644
--- a/rustcryptfs-fuse/src/encrypted_filesystem.rs
+++ b/rustcryptfs-fuse/src/encrypted_filesystem.rs
@@ -22,6 +22,7 @@ trait OptionExt<R> {
 }
 
 impl<R> OptionExt<R> for Option<R> {
+    #[inline]
     fn enoent(self) -> IoResult<R> {
         match self {
             Some(r) => Ok(r),
@@ -82,6 +83,7 @@ impl EncryptedFs {
         }
     }
 
+    #[inline]
     fn get_path(&self, ino: u64) -> Option<&PathBuf> {
         self.inode_cache.get_path(ino)
     }
@@ -119,6 +121,7 @@ impl EncryptedFs {
         })
     }
 
+    #[inline]
     fn lookup_impl(
         &mut self,
         parent: u64,
@@ -146,6 +149,7 @@ impl EncryptedFs {
         }
     }
 
+    #[inline]
     fn read_dir_impl(
         &mut self,
         ino: u64,
@@ -213,6 +217,7 @@ impl EncryptedFs {
         Ok(())
     }
 
+    #[inline]
     fn read_impl(
         &mut self,
         ino: u64,
diff --git a/rustcryptfs-lib/src/content/mod.rs b/rustcryptfs-lib/src/content/mod.rs
index 366b81b..e03c35f 100644
--- a/rustcryptfs-lib/src/content/mod.rs
+++ b/rustcryptfs-lib/src/content/mod.rs
@@ -68,6 +68,7 @@ impl ContentEnc {
     }
 
     /// Return the decrypted size of a file, based on the encrypted size.
+    #[inline]
     pub fn get_real_size(encrypted_size: u64) -> u64 {
         if encrypted_size == 0 {
             0