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().
Signed-off-by: Yang Shi <shy828301@xxxxxxxxx>
---
include/linux/khugepaged.h | 8 ++++----
mm/khugepaged.c | 26 +++++++++-----------------
mm/mmap.c | 8 ++++----
mm/shmem.c | 12 ++----------
4 files changed, 19 insertions(+), 35 deletions(-)
diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h
index 6acf9701151e..f4b12be155ab 100644
--- a/include/linux/khugepaged.h
+++ b/include/linux/khugepaged.h
@@ -10,8 +10,8 @@ extern void khugepaged_destroy(void);
extern int start_stop_khugepaged(void);
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_fork(struct mm_struct *mm,
struct mm_struct *oldmm);
extern void khugepaged_exit(struct mm_struct *mm);
@@ -49,8 +49,8 @@ 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 ec5b0a691d87..c5c3202d7401 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;
@@ -505,23 +505,15 @@ 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)
{
- unsigned long hstart, hend;
-
- /*
- * khugepaged only supports read-only files for non-shmem files.
- * khugepaged does not yet work on special mappings. And
- * file-private shmem THP is not supported.
- */
- if (!hugepage_vma_check(vma, vm_flags))
- return;
-
- hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK;
- hend = vma->vm_end & HPAGE_PMD_MASK;
- if (hstart < hend)
- khugepaged_enter(vma, vm_flags);
+ if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags) &&
+ khugepaged_enabled() &&
+ (((vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK) <
+ (vma->vm_end & HPAGE_PMD_MASK)))
+ if (hugepage_vma_check(vma, vm_flags))
+ __khugepaged_enter(vma->vm_mm);
}
void __khugepaged_exit(struct mm_struct *mm)
diff --git a/mm/mmap.c b/mm/mmap.c
index 3aa839f81e63..604c8dece5dd 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1218,7 +1218,7 @@ 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;
}
@@ -1245,7 +1245,7 @@ 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;
}
@@ -2460,7 +2460,7 @@ 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);
validate_mm(mm);
return error;
}
@@ -2538,7 +2538,7 @@ int expand_downwards(struct vm_area_struct *vma,
}
}
anon_vma_unlock_write(vma->anon_vma);
- khugepaged_enter_vma_merge(vma, vma->vm_flags);
+ khugepaged_enter_vma(vma, vma->vm_flags);
validate_mm(mm);
return error;
}
diff --git a/mm/shmem.c b/mm/shmem.c
index 529c9ad3e926..92eca974771d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2239,11 +2239,7 @@ 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;
}
@@ -4136,11 +4132,7 @@ 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
