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authorAnshuman Khandual <anshuman.khandual@arm.com>2020-04-01 21:07:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 09:35:29 -0700
commitb44437723cbcb5acd64ed25a4938b95fbb9bfccb (patch)
tree3fbbd4ff382f321214fa58d6b112d0253505a917
parentb2a403fdd15e5ac0c2160362de1464add6f651e1 (diff)
downloadlinux-stericsson-b44437723cbcb5acd64ed25a4938b95fbb9bfccb.tar.gz
mm/vma: move VM_NO_KHUGEPAGED into generic header
Patch series "mm/vma: some more minor changes", v2. The motivation here is to consolidate VMA flags and helpers in generic memory header and reduce code duplication when ever applicable. If there are other possible similar instances which might be missing here, please do let me me know. I will be happy to incorporate them. This patch (of 3): 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 While at this, fix an old comment which is no longer valid.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. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1582782965-3274-2-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/mm.h4
-rw-r--r--mm/khugepaged.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6a426f8fd1e9..18583629d424 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)
{