The patch titled
Subject: mm: khugepaged: reorg some khugepaged helpers
has been added to the -mm mm-unstable branch. Its filename is
mm-khugepaged-reorg-some-khugepaged-helpers.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-khugepaged-reorg-some-khugepaged-helpers.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
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------------------------------------------------------
From: Yang Shi <shy828301@xxxxxxxxx>
Subject: mm: khugepaged: reorg some khugepaged helpers
Date: Wed, 15 Jun 2022 10:29:25 -0700
The khugepaged_{enabled|always|req_madv} are not khugepaged only anymore,
move them to huge_mm.h and rename to hugepage_flags_xxx, and remove
khugepaged_req_madv due to no users.
Also move khugepaged_defrag to khugepaged.c since its only caller is in
that file, it doesn't have to be in a header file.
Link: https://lkml.kernel.org/r/20220615172926.546974-7-shy828301@xxxxxxxxx
Signed-off-by: Yang Shi <shy828301@xxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Zach O'Keefe <zokeefe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/huge_mm.h | 8 ++++++++
include/linux/khugepaged.h | 14 --------------
mm/huge_memory.c | 4 ++--
mm/khugepaged.c | 18 +++++++++++-------
4 files changed, 21 insertions(+), 23 deletions(-)
--- a/include/linux/huge_mm.h~mm-khugepaged-reorg-some-khugepaged-helpers
+++ a/include/linux/huge_mm.h
@@ -116,6 +116,14 @@ extern struct kobj_attribute shmem_enabl
extern unsigned long transparent_hugepage_flags;
+#define hugepage_flags_enabled() \
+ (transparent_hugepage_flags & \
+ ((1<<TRANSPARENT_HUGEPAGE_FLAG) | \
+ (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)))
+#define hugepage_flags_always() \
+ (transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_FLAG))
+
/*
* Do the below checks:
* - For file vma, check if the linear page offset of vma is
--- a/include/linux/khugepaged.h~mm-khugepaged-reorg-some-khugepaged-helpers
+++ a/include/linux/khugepaged.h
@@ -24,20 +24,6 @@ static inline void collapse_pte_mapped_t
}
#endif
-#define khugepaged_enabled() \
- (transparent_hugepage_flags & \
- ((1<<TRANSPARENT_HUGEPAGE_FLAG) | \
- (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)))
-#define khugepaged_always() \
- (transparent_hugepage_flags & \
- (1<<TRANSPARENT_HUGEPAGE_FLAG))
-#define khugepaged_req_madv() \
- (transparent_hugepage_flags & \
- (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG))
-#define khugepaged_defrag() \
- (transparent_hugepage_flags & \
- (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG))
-
static inline void khugepaged_fork(struct mm_struct *mm, struct mm_struct *oldmm)
{
if (test_bit(MMF_VM_HUGEPAGE, &oldmm->flags))
--- a/mm/huge_memory.c~mm-khugepaged-reorg-some-khugepaged-helpers
+++ a/mm/huge_memory.c
@@ -117,11 +117,11 @@ bool hugepage_vma_check(struct vm_area_s
if (!in_pf && shmem_file(vma->vm_file))
return shmem_huge_enabled(vma);
- if (!khugepaged_enabled())
+ if (!hugepage_flags_enabled())
return false;
/* THP settings require madvise. */
- if (!(vm_flags & VM_HUGEPAGE) && !khugepaged_always())
+ if (!(vm_flags & VM_HUGEPAGE) && !hugepage_flags_always())
return false;
/* Only regular file is valid */
--- a/mm/khugepaged.c~mm-khugepaged-reorg-some-khugepaged-helpers
+++ a/mm/khugepaged.c
@@ -465,7 +465,7 @@ void khugepaged_enter_vma(struct vm_area
unsigned long vm_flags)
{
if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags) &&
- khugepaged_enabled()) {
+ hugepage_flags_enabled()) {
if (hugepage_vma_check(vma, vm_flags, false, false))
__khugepaged_enter(vma->vm_mm);
}
@@ -757,6 +757,10 @@ static bool khugepaged_scan_abort(int ni
return false;
}
+#define khugepaged_defrag() \
+ (transparent_hugepage_flags & \
+ (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG))
+
/* Defrag for khugepaged will enter direct reclaim/compaction if necessary */
static inline gfp_t alloc_hugepage_khugepaged_gfpmask(void)
{
@@ -854,7 +858,7 @@ static struct page *khugepaged_alloc_hug
khugepaged_alloc_sleep();
} else
count_vm_event(THP_COLLAPSE_ALLOC);
- } while (unlikely(!hpage) && likely(khugepaged_enabled()));
+ } while (unlikely(!hpage) && likely(hugepage_flags_enabled()));
return hpage;
}
@@ -2173,7 +2177,7 @@ breakouterloop_mmap_lock:
static int khugepaged_has_work(void)
{
return !list_empty(&khugepaged_scan.mm_head) &&
- khugepaged_enabled();
+ hugepage_flags_enabled();
}
static int khugepaged_wait_event(void)
@@ -2238,7 +2242,7 @@ static void khugepaged_wait_work(void)
return;
}
- if (khugepaged_enabled())
+ if (hugepage_flags_enabled())
wait_event_freezable(khugepaged_wait, khugepaged_wait_event());
}
@@ -2269,7 +2273,7 @@ static void set_recommended_min_free_kby
int nr_zones = 0;
unsigned long recommended_min;
- if (!khugepaged_enabled()) {
+ if (!hugepage_flags_enabled()) {
calculate_min_free_kbytes();
goto update_wmarks;
}
@@ -2319,7 +2323,7 @@ int start_stop_khugepaged(void)
int err = 0;
mutex_lock(&khugepaged_mutex);
- if (khugepaged_enabled()) {
+ if (hugepage_flags_enabled()) {
if (!khugepaged_thread)
khugepaged_thread = kthread_run(khugepaged, NULL,
"khugepaged");
@@ -2345,7 +2349,7 @@ fail:
void khugepaged_min_free_kbytes_update(void)
{
mutex_lock(&khugepaged_mutex);
- if (khugepaged_enabled() && khugepaged_thread)
+ if (hugepage_flags_enabled() && khugepaged_thread)
set_recommended_min_free_kbytes();
mutex_unlock(&khugepaged_mutex);
}
_
Patches currently in -mm which might be from shy828301@xxxxxxxxx are
mm-rmap-use-the-correct-parameter-name-for-define_page_vma_walk.patch
mm-pvmw-check-possible-huge-pmd-map-by-transhuge_vma_suitable.patch
mm-khugepaged-check-thp-flag-in-hugepage_vma_check.patch
mm-thp-consolidate-vma-size-check-to-transhuge_vma_suitable.patch
mm-khugepaged-better-comments-for-anon-vma-check-in-hugepage_vma_revalidate.patch
mm-thp-kill-transparent_hugepage_active.patch
mm-thp-kill-__transhuge_page_enabled.patch
mm-khugepaged-reorg-some-khugepaged-helpers.patch
doc-proc-fix-the-description-to-thpeligible.patch
