From 649d1ba26be097870d1b894b22ba265e38377c58 Mon Sep 17 00:00:00 2001
From: Sean Cross <sean@xobs.io>
Date: Tue, 24 Dec 2019 09:36:09 +0800
Subject: [PATCH] mm: allow us to re-claim a page

If a page is already claimed by us, don't throw an OutOfMemory error.

Signed-off-by: Sean Cross <sean@xobs.io>
---
 src/mem.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mem.rs b/src/mem.rs
index 154facb..c32f591 100644
--- a/src/mem.rs
+++ b/src/mem.rs
@@ -118,7 +118,7 @@ impl MemoryManager {
         if page > tbl.len() {
             return Err(XousError::BadAddress);
         }
-        if tbl[page] != 0 {
+        if tbl[page] != 0 && tbl[page] != pid {
             return Err(XousError::OutOfMemory);
         }
         tbl[page] = pid;