From 74336e8c040b8c0ae39b7d1a9944c592bbe26344 Mon Sep 17 00:00:00 2001
From: Anhad Singh <andypython@protonmail.com>
Date: Tue, 10 Dec 2024 01:03:06 +1100
Subject: [PATCH] feat(mremap): add `KEEP_OLD` flag

Signed-off-by: Anhad Singh <andypython@protonmail.com>
---
 src/flag.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/flag.rs b/src/flag.rs
index 6f7a6a44d0..f0b2f9a0e0 100644
--- a/src/flag.rs
+++ b/src/flag.rs
@@ -311,6 +311,9 @@ bitflags! {
     pub struct MremapFlags: usize {
         const FIXED = 1;
         const FIXED_REPLACE = 3;
+        /// Alias's memory region at `old_address` to `new_address` such that both regions share
+        /// the same frames.
+        const KEEP_OLD = 1 << 2;
         // TODO: MAYMOVE, DONTUNMAP
     }
 }