From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-mm@kvack.org
Cc: vbabka@suse.cz, Anshuman Khandual <anshuman.khandual@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH V2 1/3] mm/vma: Move VM_NO_KHUGEPAGED into generic header
Date: Thu, 27 Feb 2020 11:26:03 +0530 [thread overview]
Message-ID: <1582782965-3274-2-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1582782965-3274-1-git-send-email-anshuman.khandual@arm.com>
Move VM_NO_KHUGEPAGED into generic header (include/linux/mm.h). This just
makes sure that no VMA flag is scattered in individual function files any
longer. While at this, fix an old comment which is no longer valid. This
should not cause any functional change.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
include/linux/mm.h | 4 +++-
mm/khugepaged.c | 2 --
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 52269e56c514..7cb7a5c564fb 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -356,10 +356,12 @@ extern unsigned int kobjsize(const void *objp);
/*
* Special vmas that are non-mergable, non-mlock()able.
- * Note: mm/huge_memory.c VM_NO_THP depends on this definition.
*/
#define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP)
+/* This mask prevents VMA from being scanned with khugepaged */
+#define VM_NO_KHUGEPAGED (VM_SPECIAL | VM_HUGETLB)
+
/* This mask defines which mm->def_flags a process can inherit its parent */
#define VM_INIT_DEF_MASK VM_NOHUGEPAGE
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index b679908743cb..494443628850 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -308,8 +308,6 @@ struct attribute_group khugepaged_attr_group = {
};
#endif /* CONFIG_SYSFS */
-#define VM_NO_KHUGEPAGED (VM_SPECIAL | VM_HUGETLB)
-
int hugepage_madvise(struct vm_area_struct *vma,
unsigned long *vm_flags, int advice)
{
--
2.20.1
next prev parent reply other threads:[~2020-02-27 5:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 5:56 [PATCH V2 0/3] mm/vma: some more minor changes Anshuman Khandual
2020-02-27 5:56 ` Anshuman Khandual [this message]
2020-02-27 8:00 ` [PATCH V2 1/3] mm/vma: Move VM_NO_KHUGEPAGED into generic header Vlastimil Babka
2020-02-27 5:56 ` [PATCH V2 2/3] mm/vma: Make vma_is_foreign() available for general use Anshuman Khandual
2020-02-27 5:56 ` [PATCH V2 3/3] mm/vma: Make is_vma_temporary_stack() " Anshuman Khandual
2020-02-27 8:01 ` Vlastimil Babka
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