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-rw-r--r--fs/proc/task_mmu.c4
-rw-r--r--include/linux/huge_mm.h29
-rw-r--r--mm/huge_memory.c7
-rw-r--r--mm/khugepaged.c16
-rw-r--r--mm/memory.c10
5 files changed, 35 insertions, 31 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index f4259b7edfde..81fbecfe5ff6 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -871,8 +871,8 @@ static int show_smap(struct seq_file *m, void *v)
__show_smap(m, &mss, false);
seq_printf(m, "THPeligible: %8u\n",
- !!thp_vma_allowable_orders(vma, vma->vm_flags, true, false,
- true, THP_ORDERS_ALL));
+ !!thp_vma_allowable_orders(vma, vma->vm_flags,
+ TVA_SMAPS | TVA_ENFORCE_SYSFS, THP_ORDERS_ALL));
if (arch_pkeys_enabled())
seq_printf(m, "ProtectionKey: %8u\n", vma_pkey(vma));
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 7cd07b83a3d0..c8d3ec116e29 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -81,8 +81,12 @@ extern struct kobj_attribute shmem_enabled_attr;
*/
#define THP_ORDERS_ALL (THP_ORDERS_ALL_ANON | THP_ORDERS_ALL_FILE)
-#define thp_vma_allowable_order(vma, vm_flags, smaps, in_pf, enforce_sysfs, order) \
- (!!thp_vma_allowable_orders(vma, vm_flags, smaps, in_pf, enforce_sysfs, BIT(order)))
+#define TVA_SMAPS (1 << 0) /* Will be used for procfs */
+#define TVA_IN_PF (1 << 1) /* Page fault handler */
+#define TVA_ENFORCE_SYSFS (1 << 2) /* Obey sysfs configuration */
+
+#define thp_vma_allowable_order(vma, vm_flags, tva_flags, order) \
+ (!!thp_vma_allowable_orders(vma, vm_flags, tva_flags, BIT(order)))
#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES
#define HPAGE_PMD_SHIFT PMD_SHIFT
@@ -218,17 +222,15 @@ static inline bool file_thp_enabled(struct vm_area_struct *vma)
}
unsigned long __thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags, bool smaps,
- bool in_pf, bool enforce_sysfs,
+ unsigned long vm_flags,
+ unsigned long tva_flags,
unsigned long orders);
/**
* thp_vma_allowable_orders - determine hugepage orders that are allowed for vma
* @vma: the vm area to check
* @vm_flags: use these vm_flags instead of vma->vm_flags
- * @smaps: whether answer will be used for smaps file
- * @in_pf: whether answer will be used by page fault handler
- * @enforce_sysfs: whether sysfs config should be taken into account
+ * @tva_flags: Which TVA flags to honour
* @orders: bitfield of all orders to consider
*
* Calculates the intersection of the requested hugepage orders and the allowed
@@ -241,12 +243,12 @@ unsigned long __thp_vma_allowable_orders(struct vm_area_struct *vma,
*/
static inline
unsigned long thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags, bool smaps,
- bool in_pf, bool enforce_sysfs,
+ unsigned long vm_flags,
+ unsigned long tva_flags,
unsigned long orders)
{
/* Optimization to check if required orders are enabled early. */
- if (enforce_sysfs && vma_is_anonymous(vma)) {
+ if ((tva_flags & TVA_ENFORCE_SYSFS) && vma_is_anonymous(vma)) {
unsigned long mask = READ_ONCE(huge_anon_orders_always);
if (vm_flags & VM_HUGEPAGE)
@@ -260,8 +262,7 @@ unsigned long thp_vma_allowable_orders(struct vm_area_struct *vma,
return 0;
}
- return __thp_vma_allowable_orders(vma, vm_flags, smaps, in_pf,
- enforce_sysfs, orders);
+ return __thp_vma_allowable_orders(vma, vm_flags, tva_flags, orders);
}
enum mthp_stat_item {
@@ -428,8 +429,8 @@ static inline unsigned long thp_vma_suitable_orders(struct vm_area_struct *vma,
}
static inline unsigned long thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags, bool smaps,
- bool in_pf, bool enforce_sysfs,
+ unsigned long vm_flags,
+ unsigned long tva_flags,
unsigned long orders)
{
return 0;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index eabf088cb444..aaa327bd5155 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -81,10 +81,13 @@ unsigned long huge_anon_orders_madvise __read_mostly;
unsigned long huge_anon_orders_inherit __read_mostly;
unsigned long __thp_vma_allowable_orders(struct vm_area_struct *vma,
- unsigned long vm_flags, bool smaps,
- bool in_pf, bool enforce_sysfs,
+ unsigned long vm_flags,
+ unsigned long tva_flags,
unsigned long orders)
{
+ bool smaps = tva_flags & TVA_SMAPS;
+ bool in_pf = tva_flags & TVA_IN_PF;
+ bool enforce_sysfs = tva_flags & TVA_ENFORCE_SYSFS;
/* Check the intersection of requested and supported orders. */
orders &= vma_is_anonymous(vma) ?
THP_ORDERS_ALL_ANON : THP_ORDERS_ALL_FILE;
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index cf518fc44098..774a97e6e2da 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -453,7 +453,7 @@ void khugepaged_enter_vma(struct vm_area_struct *vma,
{
if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags) &&
hugepage_flags_enabled()) {
- if (thp_vma_allowable_order(vma, vm_flags, false, false, true,
+ if (thp_vma_allowable_order(vma, vm_flags, TVA_ENFORCE_SYSFS,
PMD_ORDER))
__khugepaged_enter(vma->vm_mm);
}
@@ -900,6 +900,7 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address,
struct collapse_control *cc)
{
struct vm_area_struct *vma;
+ unsigned long tva_flags = cc->is_khugepaged ? TVA_ENFORCE_SYSFS : 0;
if (unlikely(hpage_collapse_test_exit_or_disable(mm)))
return SCAN_ANY_PROCESS;
@@ -910,8 +911,7 @@ static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address,
if (!thp_vma_suitable_order(vma, address, PMD_ORDER))
return SCAN_ADDRESS_RANGE;
- if (!thp_vma_allowable_order(vma, vma->vm_flags, false, false,
- cc->is_khugepaged, PMD_ORDER))
+ if (!thp_vma_allowable_order(vma, vma->vm_flags, tva_flags, PMD_ORDER))
return SCAN_VMA_CHECK;
/*
* Anon VMA expected, the address may be unmapped then
@@ -1501,8 +1501,7 @@ int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr,
* and map it by a PMD, regardless of sysfs THP settings. As such, let's
* analogously elide sysfs THP settings here.
*/
- if (!thp_vma_allowable_order(vma, vma->vm_flags, false, false, false,
- PMD_ORDER))
+ if (!thp_vma_allowable_order(vma, vma->vm_flags, 0, PMD_ORDER))
return SCAN_VMA_CHECK;
/* Keep pmd pgtable for uffd-wp; see comment in retract_page_tables() */
@@ -2363,8 +2362,8 @@ static unsigned int khugepaged_scan_mm_slot(unsigned int pages, int *result,
progress++;
break;
}
- if (!thp_vma_allowable_order(vma, vma->vm_flags, false, false,
- true, PMD_ORDER)) {
+ if (!thp_vma_allowable_order(vma, vma->vm_flags,
+ TVA_ENFORCE_SYSFS, PMD_ORDER)) {
skip:
progress++;
continue;
@@ -2701,8 +2700,7 @@ int madvise_collapse(struct vm_area_struct *vma, struct vm_area_struct **prev,
*prev = vma;
- if (!thp_vma_allowable_order(vma, vma->vm_flags, false, false, false,
- PMD_ORDER))
+ if (!thp_vma_allowable_order(vma, vma->vm_flags, 0, PMD_ORDER))
return -EINVAL;
cc = kmalloc(sizeof(*cc), GFP_KERNEL);
diff --git a/mm/memory.c b/mm/memory.c
index c0bd4e0d5e7a..79d851be8ab2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4334,8 +4334,8 @@ static struct folio *alloc_anon_folio(struct vm_fault *vmf)
* for this vma. Then filter out the orders that can't be allocated over
* the faulting address and still be fully contained in the vma.
*/
- orders = thp_vma_allowable_orders(vma, vma->vm_flags, false, true, true,
- BIT(PMD_ORDER) - 1);
+ orders = thp_vma_allowable_orders(vma, vma->vm_flags,
+ TVA_IN_PF | TVA_ENFORCE_SYSFS, BIT(PMD_ORDER) - 1);
orders = thp_vma_suitable_orders(vma, vmf->address, orders);
if (!orders)
@@ -5438,7 +5438,8 @@ static vm_fault_t __handle_mm_fault(struct vm_area_struct *vma,
return VM_FAULT_OOM;
retry_pud:
if (pud_none(*vmf.pud) &&
- thp_vma_allowable_order(vma, vm_flags, false, true, true, PUD_ORDER)) {
+ thp_vma_allowable_order(vma, vm_flags,
+ TVA_IN_PF | TVA_ENFORCE_SYSFS, PUD_ORDER)) {
ret = create_huge_pud(&vmf);
if (!(ret & VM_FAULT_FALLBACK))
return ret;
@@ -5472,7 +5473,8 @@ retry_pud:
goto retry_pud;
if (pmd_none(*vmf.pmd) &&
- thp_vma_allowable_order(vma, vm_flags, false, true, true, PMD_ORDER)) {
+ thp_vma_allowable_order(vma, vm_flags,
+ TVA_IN_PF | TVA_ENFORCE_SYSFS, PMD_ORDER)) {
ret = create_huge_pmd(&vmf);
if (!(ret & VM_FAULT_FALLBACK))
return ret;
generated by cgit v1.2.3 (git 2.39.0) at 2024-06-30 22:23:29 +0300