linux-kernel - [Patch v2 2/6] x86/mm: Add attribute __ro_after_init to after

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Date:   Thu,  5 Dec 2019 10:13:59 +0800
From:   Wei Yang <richardw.yang@...ux.intel.com>
To:     x86@...nel.org, linux-kernel@...r.kernel.org
Cc:     richard.weiyang@...il.com, dave.hansen@...ux.intel.com,
        luto@...nel.org, peterz@...radead.or, tglx@...utronix.de,
        Wei Yang <richardw.yang@...ux.intel.com>
Subject: [Patch v2 2/6] x86/mm: Add attribute __ro_after_init to after_bootmem

after_bootmem is only set in mem_init().

Signed-off-by: Wei Yang <richardw.yang@...ux.intel.com>
---
 arch/x86/mm/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 916a3d9b5bfd..4fa5fd641865 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -160,7 +160,7 @@ void  __init early_alloc_pgt_buf(void)
 	pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT);
 }
 
-int after_bootmem;
+int after_bootmem __ro_after_init;
 
 early_param_on_off("gbpages", "nogbpages", direct_gbpages, CONFIG_X86_DIRECT_GBPAGES);
 
-- 
2.17.1