From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Hansen <dave.hansen@intel.com>,
Andrey Ryabinin <a.ryabinin@samsung.com>,
Sasha Levin <sasha.levin@oracle.com>,
David Rientjes <rientjes@google.com>,
linux-mm@kvack.org,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH 2/2] mm: mark fault_around_bytes __read_mostly
Date: Fri, 1 Aug 2014 14:51:09 +0300 [thread overview]
Message-ID: <1406893869-32739-3-git-send-email-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <1406893869-32739-1-git-send-email-kirill.shutemov@linux.intel.com>
fault_around_bytes can only be changed via debugfs. Let's mark it
read-mostly.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: David Rientjes <rientjes@google.com>
Acked-by: David Rientjes <rientjes@google.com>
---
mm/memory.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/memory.c b/mm/memory.c
index be43fd9606db..281556eb4e62 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2768,7 +2768,8 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address,
update_mmu_cache(vma, address, pte);
}
-static unsigned long fault_around_bytes = rounddown_pow_of_two(65536);
+static unsigned long fault_around_bytes __read_mostly =
+ rounddown_pow_of_two(65536);
#ifdef CONFIG_DEBUG_FS
static int fault_around_bytes_get(void *data, u64 *val)
--
2.0.1
--
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next prev parent reply other threads:[~2014-08-01 11:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-01 11:51 [PATCH 0/2] faultaround updates Kirill A. Shutemov
2014-08-01 11:51 ` [PATCHv2 1/2] mm: close race between do_fault_around() and fault_around_bytes_set() Kirill A. Shutemov
2014-08-01 21:36 ` Naoya Horiguchi
2014-08-01 11:51 ` Kirill A. Shutemov [this message]
2014-08-01 21:32 ` [PATCH 0/2] faultaround updates David Rientjes
2014-08-02 8:39 ` Kirill A. Shutemov
2014-08-04 22:20 ` Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2014-07-29 11:33 Kirill A. Shutemov
2014-07-29 11:33 ` [PATCH 2/2] mm: mark fault_around_bytes __read_mostly Kirill A. Shutemov
2014-07-29 22:38 ` David Rientjes
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