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Message-Id: <20220510203222.24246-8-shy828301@gmail.com>
Date: Tue, 10 May 2022 13:32:21 -0700
From: Yang Shi <shy828301@...il.com>
To: vbabka@...e.cz, kirill.shutemov@...ux.intel.com,
linmiaohe@...wei.com, songliubraving@...com, riel@...riel.com,
willy@...radead.org, ziy@...dia.com, tytso@....edu,
akpm@...ux-foundation.org
Cc: shy828301@...il.com, linux-mm@...ck.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [v4 PATCH 7/8] mm: khugepaged: introduce khugepaged_enter_vma() helper
The khugepaged_enter_vma_merge() actually does as the same thing as the
khugepaged_enter() section called by shmem_mmap(), so consolidate them
into one helper and rename it to khugepaged_enter_vma().
Acked-by: Vlastmil Babka <vbabka@...e.cz>
Signed-off-by: Yang Shi <shy828301@...il.com>
---
include/linux/khugepaged.h | 8 ++++----
mm/khugepaged.c | 6 +++---
mm/mmap.c | 12 ++++++------
mm/shmem.c | 12 ++----------
4 files changed, 15 insertions(+), 23 deletions(-)
diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h
index c340f6bb39d6..392d34c3c59a 100644
--- a/include/linux/khugepaged.h
+++ b/include/linux/khugepaged.h
@@ -14,8 +14,8 @@ extern bool hugepage_vma_check(struct vm_area_struct *vma,
unsigned long vm_flags);
extern void __khugepaged_enter(struct mm_struct *mm);
extern void __khugepaged_exit(struct mm_struct *mm);
-extern void khugepaged_enter_vma_merge(struct vm_area_struct *vma,
- unsigned long vm_flags);
+extern void khugepaged_enter_vma(struct vm_area_struct *vma,
+ unsigned long vm_flags);
extern void khugepaged_min_free_kbytes_update(void);
#ifdef CONFIG_SHMEM
extern void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr);
@@ -72,8 +72,8 @@ static inline void khugepaged_enter(struct vm_area_struct *vma,
unsigned long vm_flags)
{
}
-static inline void khugepaged_enter_vma_merge(struct vm_area_struct *vma,
- unsigned long vm_flags)
+static inline void khugepaged_enter_vma(struct vm_area_struct *vma,
+ unsigned long vm_flags)
{
}
static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index dec449339964..32db587c5224 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -365,7 +365,7 @@ int hugepage_madvise(struct vm_area_struct *vma,
* register it here without waiting a page fault that
* may not happen any time soon.
*/
- khugepaged_enter_vma_merge(vma, *vm_flags);
+ khugepaged_enter_vma(vma, *vm_flags);
break;
case MADV_NOHUGEPAGE:
*vm_flags &= ~VM_HUGEPAGE;
@@ -505,8 +505,8 @@ void __khugepaged_enter(struct mm_struct *mm)
wake_up_interruptible(&khugepaged_wait);
}
-void khugepaged_enter_vma_merge(struct vm_area_struct *vma,
- unsigned long vm_flags)
+void khugepaged_enter_vma(struct vm_area_struct *vma,
+ unsigned long vm_flags)
{
if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags) &&
khugepaged_enabled() &&
diff --git a/mm/mmap.c b/mm/mmap.c
index 3445a8c304af..34ff1600426c 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1122,7 +1122,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
end, prev->vm_pgoff, NULL, prev);
if (err)
return NULL;
- khugepaged_enter_vma_merge(prev, vm_flags);
+ khugepaged_enter_vma(prev, vm_flags);
return prev;
}
@@ -1149,7 +1149,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
}
if (err)
return NULL;
- khugepaged_enter_vma_merge(area, vm_flags);
+ khugepaged_enter_vma(area, vm_flags);
return area;
}
@@ -2046,7 +2046,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
}
}
anon_vma_unlock_write(vma->anon_vma);
- khugepaged_enter_vma_merge(vma, vma->vm_flags);
+ khugepaged_enter_vma(vma, vma->vm_flags);
return error;
}
#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
@@ -2127,7 +2127,7 @@ int expand_downwards(struct vm_area_struct *vma, unsigned long address)
}
}
anon_vma_unlock_write(vma->anon_vma);
- khugepaged_enter_vma_merge(vma, vma->vm_flags);
+ khugepaged_enter_vma(vma, vma->vm_flags);
return error;
}
@@ -2635,7 +2635,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
/* Actually expand, if possible */
if (vma &&
!vma_expand(&mas, vma, merge_start, merge_end, vm_pgoff, next)) {
- khugepaged_enter_vma_merge(vma, vm_flags);
+ khugepaged_enter_vma(vma, vm_flags);
goto expanded;
}
@@ -3051,7 +3051,7 @@ static int do_brk_flags(struct ma_state *mas, struct vm_area_struct *vma,
anon_vma_interval_tree_post_update_vma(vma);
anon_vma_unlock_write(vma->anon_vma);
}
- khugepaged_enter_vma_merge(vma, flags);
+ khugepaged_enter_vma(vma, flags);
goto out;
}
diff --git a/mm/shmem.c b/mm/shmem.c
index 29701be579f8..89f6f4fec3f9 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2232,11 +2232,7 @@ static int shmem_mmap(struct file *file, struct vm_area_struct *vma)
file_accessed(file);
vma->vm_ops = &shmem_vm_ops;
- if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) &&
- ((vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK) <
- (vma->vm_end & HPAGE_PMD_MASK)) {
- khugepaged_enter(vma, vma->vm_flags);
- }
+ khugepaged_enter_vma(vma, vma->vm_flags);
return 0;
}
@@ -4137,11 +4133,7 @@ int shmem_zero_setup(struct vm_area_struct *vma)
vma->vm_file = file;
vma->vm_ops = &shmem_vm_ops;
- if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) &&
- ((vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK) <
- (vma->vm_end & HPAGE_PMD_MASK)) {
- khugepaged_enter(vma, vma->vm_flags);
- }
+ khugepaged_enter_vma(vma, vma->vm_flags);
return 0;
}
--
2.26.3
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