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-rw-r--r--mm/madvise.c123
1 files changed, 59 insertions, 64 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index 18c2e2affac4..340125d08c03 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -142,6 +142,7 @@ static int madvise_update_vma(struct vm_area_struct *vma,
struct mm_struct *mm = vma->vm_mm;
int error;
pgoff_t pgoff;
+ VMA_ITERATOR(vmi, mm, start);
if (new_flags == vma->vm_flags && anon_vma_name_eq(anon_vma_name(vma), anon_name)) {
*prev = vma;
@@ -149,8 +150,8 @@ static int madvise_update_vma(struct vm_area_struct *vma,
}
pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);
- *prev = vma_merge(mm, *prev, start, end, new_flags, vma->anon_vma,
- vma->vm_file, pgoff, vma_policy(vma),
+ *prev = vma_merge(&vmi, mm, *prev, start, end, new_flags,
+ vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma),
vma->vm_userfaultfd_ctx, anon_name);
if (*prev) {
vma = *prev;
@@ -160,17 +161,13 @@ static int madvise_update_vma(struct vm_area_struct *vma,
*prev = vma;
if (start != vma->vm_start) {
- if (unlikely(mm->map_count >= sysctl_max_map_count))
- return -ENOMEM;
- error = __split_vma(mm, vma, start, 1);
+ error = split_vma(&vmi, vma, start, 1);
if (error)
return error;
}
if (end != vma->vm_end) {
- if (unlikely(mm->map_count >= sysctl_max_map_count))
- return -ENOMEM;
- error = __split_vma(mm, vma, end, 0);
+ error = split_vma(&vmi, vma, end, 0);
if (error)
return error;
}
@@ -179,7 +176,7 @@ success:
/*
* vm_flags is protected by the mmap_lock held in write mode.
*/
- vma->vm_flags = new_flags;
+ vm_flags_reset(vma, new_flags);
if (!vma->vm_file || vma_is_anon_shmem(vma)) {
error = replace_anon_vma_name(vma, anon_name);
if (error)
@@ -345,8 +342,8 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
struct vm_area_struct *vma = walk->vma;
pte_t *orig_pte, *pte, ptent;
spinlock_t *ptl;
- struct page *page = NULL;
- LIST_HEAD(page_list);
+ struct folio *folio = NULL;
+ LIST_HEAD(folio_list);
bool pageout_anon_only_filter;
if (fatal_signal_pending(current))
@@ -375,26 +372,26 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
goto huge_unlock;
}
- page = pmd_page(orig_pmd);
+ folio = pfn_folio(pmd_pfn(orig_pmd));
- /* Do not interfere with other mappings of this page */
- if (page_mapcount(page) != 1)
+ /* Do not interfere with other mappings of this folio */
+ if (folio_mapcount(folio) != 1)
goto huge_unlock;
- if (pageout_anon_only_filter && !PageAnon(page))
+ if (pageout_anon_only_filter && !folio_test_anon(folio))
goto huge_unlock;
if (next - addr != HPAGE_PMD_SIZE) {
int err;
- get_page(page);
+ folio_get(folio);
spin_unlock(ptl);
- lock_page(page);
- err = split_huge_page(page);
- unlock_page(page);
- put_page(page);
+ folio_lock(folio);
+ err = split_folio(folio);
+ folio_unlock(folio);
+ folio_put(folio);
if (!err)
- goto regular_page;
+ goto regular_folio;
return 0;
}
@@ -406,25 +403,25 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
tlb_remove_pmd_tlb_entry(tlb, pmd, addr);
}
- ClearPageReferenced(page);
- test_and_clear_page_young(page);
+ folio_clear_referenced(folio);
+ folio_test_clear_young(folio);
if (pageout) {
- if (!isolate_lru_page(page)) {
- if (PageUnevictable(page))
- putback_lru_page(page);
+ if (folio_isolate_lru(folio)) {
+ if (folio_test_unevictable(folio))
+ folio_putback_lru(folio);
else
- list_add(&page->lru, &page_list);
+ list_add(&folio->lru, &folio_list);
}
} else
- deactivate_page(page);
+ folio_deactivate(folio);
huge_unlock:
spin_unlock(ptl);
if (pageout)
- reclaim_pages(&page_list);
+ reclaim_pages(&folio_list);
return 0;
}
-regular_page:
+regular_folio:
if (pmd_trans_unstable(pmd))
return 0;
#endif
@@ -441,33 +438,33 @@ regular_page:
if (!pte_present(ptent))
continue;
- page = vm_normal_page(vma, addr, ptent);
- if (!page || is_zone_device_page(page))
+ folio = vm_normal_folio(vma, addr, ptent);
+ if (!folio || folio_is_zone_device(folio))
continue;
/*
* Creating a THP page is expensive so split it only if we
* are sure it's worth. Split it if we are only owner.
*/
- if (PageTransCompound(page)) {
- if (page_mapcount(page) != 1)
+ if (folio_test_large(folio)) {
+ if (folio_mapcount(folio) != 1)
break;
- if (pageout_anon_only_filter && !PageAnon(page))
+ if (pageout_anon_only_filter && !folio_test_anon(folio))
break;
- get_page(page);
- if (!trylock_page(page)) {
- put_page(page);
+ folio_get(folio);
+ if (!folio_trylock(folio)) {
+ folio_put(folio);
break;
}
pte_unmap_unlock(orig_pte, ptl);
- if (split_huge_page(page)) {
- unlock_page(page);
- put_page(page);
+ if (split_folio(folio)) {
+ folio_unlock(folio);
+ folio_put(folio);
orig_pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
break;
}
- unlock_page(page);
- put_page(page);
+ folio_unlock(folio);
+ folio_put(folio);
orig_pte = pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
pte--;
addr -= PAGE_SIZE;
@@ -475,16 +472,16 @@ regular_page:
}
/*
- * Do not interfere with other mappings of this page and
- * non-LRU page.
+ * Do not interfere with other mappings of this folio and
+ * non-LRU folio.
*/
- if (!PageLRU(page) || page_mapcount(page) != 1)
+ if (!folio_test_lru(folio) || folio_mapcount(folio) != 1)
continue;
- if (pageout_anon_only_filter && !PageAnon(page))
+ if (pageout_anon_only_filter && !folio_test_anon(folio))
continue;
- VM_BUG_ON_PAGE(PageTransCompound(page), page);
+ VM_BUG_ON_FOLIO(folio_test_large(folio), folio);
if (pte_young(ptent)) {
ptent = ptep_get_and_clear_full(mm, addr, pte,
@@ -495,28 +492,28 @@ regular_page:
}
/*
- * We are deactivating a page for accelerating reclaiming.
- * VM couldn't reclaim the page unless we clear PG_young.
+ * We are deactivating a folio for accelerating reclaiming.
+ * VM couldn't reclaim the folio unless we clear PG_young.
* As a side effect, it makes confuse idle-page tracking
* because they will miss recent referenced history.
*/
- ClearPageReferenced(page);
- test_and_clear_page_young(page);
+ folio_clear_referenced(folio);
+ folio_test_clear_young(folio);
if (pageout) {
- if (!isolate_lru_page(page)) {
- if (PageUnevictable(page))
- putback_lru_page(page);
+ if (folio_isolate_lru(folio)) {
+ if (folio_test_unevictable(folio))
+ folio_putback_lru(folio);
else
- list_add(&page->lru, &page_list);
+ list_add(&folio->lru, &folio_list);
}
} else
- deactivate_page(page);
+ folio_deactivate(folio);
}
arch_leave_lazy_mmu_mode();
pte_unmap_unlock(orig_pte, ptl);
if (pageout)
- reclaim_pages(&page_list);
+ reclaim_pages(&folio_list);
cond_resched();
return 0;
@@ -617,7 +614,6 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
spinlock_t *ptl;
pte_t *orig_pte, *pte, ptent;
struct folio *folio;
- struct page *page;
int nr_swap = 0;
unsigned long next;
@@ -658,10 +654,9 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
continue;
}
- page = vm_normal_page(vma, addr, ptent);
- if (!page || is_zone_device_page(page))
+ folio = vm_normal_folio(vma, addr, ptent);
+ if (!folio || folio_is_zone_device(folio))
continue;
- folio = page_folio(page);
/*
* If pmd isn't transhuge but the folio is large and
@@ -728,7 +723,7 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
set_pte_at(mm, addr, pte, ptent);
tlb_remove_tlb_entry(tlb, pte, addr);
}
- mark_page_lazyfree(&folio->page);
+ folio_mark_lazyfree(folio);
}
out:
if (nr_swap) {
@@ -765,7 +760,7 @@ static int madvise_free_single_vma(struct vm_area_struct *vma,
range.end = min(vma->vm_end, end_addr);
if (range.end <= vma->vm_start)
return -EINVAL;
- mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm,
+ mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm,
range.start, range.end);
lru_add_drain();
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 00:21:49 +0000