From 2cd4d2d7fcea6822a32211c6e2ad4b126baf079a Mon Sep 17 00:00:00 2001
From: Ryan VanderMeulen <ryanvm@gmail.com>
Date: Wed, 27 Nov 2024 14:55:39 +0000
Subject: [PATCH] Bug 1932669 - Switch to getpagesize() in Ashmem
 VolatileBuffer code. r=glandium

This mirrors the OSX code and allows for different Android page sizes.

Differential Revision: https://phabricator.services.mozilla.com/D230320
---
 memory/volatile/VolatileBufferAshmem.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/memory/volatile/VolatileBufferAshmem.cpp b/memory/volatile/VolatileBufferAshmem.cpp
index 99a0d1307fb0..6568dcf06b36 100644
--- a/memory/volatile/VolatileBufferAshmem.cpp
+++ b/memory/volatile/VolatileBufferAshmem.cpp
@@ -114,7 +114,8 @@ size_t VolatileBuffer::NonHeapSizeOfExcludingThis() const {
     return 0;
   }
 
-  return (mSize + (PAGE_SIZE - 1)) & PAGE_MASK;
+  size_t pagemask = getpagesize() - 1;
+  return (mSize + pagemask) & ~pagemask;
 }
 
 }  // namespace mozilla