From b463e014d837236f22d3c8b967e0f25801d294bd Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 12 Sep 2021 15:30:05 +0100
Subject: mman mod adding MAP_ALIGNED_SUPER flag for freebsd.

---
 CHANGELOG.md    | 2 ++
 src/sys/mman.rs | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d3e513a..91810187 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -44,6 +44,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   (#[1515](https://github.com/nix-rust/nix/pull/1515))
 - Added `MAP_EXCL` mmap flag for freebsd.
   (#[1525](https://github.com/nix-rust/nix/pull/1525))
+- Added `MAP_ALIGNED_SUPER` mmap flag for freebsd.
+  (#[1522](https://github.com/nix-rust/nix/pull/1522))
 
 ### Changed
 
diff --git a/src/sys/mman.rs b/src/sys/mman.rs
index e3c36208..a6fcdd5a 100644
--- a/src/sys/mman.rs
+++ b/src/sys/mman.rs
@@ -140,6 +140,9 @@ libc_bitflags!{
         MAP_NOCACHE;
         #[cfg(any(target_os = "ios", target_os = "macos"))]
         MAP_JIT;
+        /// Allows to use large pages, underlying alignment based on size.
+        #[cfg(target_os = "freesd")]
+        MAP_ALIGNED_SUPER;
     }
 }
 
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