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Diffstat (limited to 'mm/mlock.c')
-rw-r--r--mm/mlock.c27
1 files changed, 10 insertions, 17 deletions
diff --git a/mm/mlock.c b/mm/mlock.c
index ef726e8aa8e9..f0b9ce572fc7 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -51,15 +51,13 @@ EXPORT_SYMBOL(can_do_mlock);
/*
* LRU accounting for clear_page_mlock()
*/
-void __clear_page_mlock(struct page *page)
+void clear_page_mlock(struct page *page)
{
- VM_BUG_ON(!PageLocked(page));
-
- if (!page->mapping) { /* truncated ? */
+ if (!TestClearPageMlocked(page))
return;
- }
- dec_zone_page_state(page, NR_MLOCK);
+ mod_zone_page_state(page_zone(page), NR_MLOCK,
+ -hpage_nr_pages(page));
count_vm_event(UNEVICTABLE_PGCLEARED);
if (!isolate_lru_page(page)) {
putback_lru_page(page);
@@ -81,7 +79,8 @@ void mlock_vma_page(struct page *page)
BUG_ON(!PageLocked(page));
if (!TestSetPageMlocked(page)) {
- inc_zone_page_state(page, NR_MLOCK);
+ mod_zone_page_state(page_zone(page), NR_MLOCK,
+ hpage_nr_pages(page));
count_vm_event(UNEVICTABLE_PGMLOCKED);
if (!isolate_lru_page(page))
putback_lru_page(page);
@@ -108,7 +107,8 @@ void munlock_vma_page(struct page *page)
BUG_ON(!PageLocked(page));
if (TestClearPageMlocked(page)) {
- dec_zone_page_state(page, NR_MLOCK);
+ mod_zone_page_state(page_zone(page), NR_MLOCK,
+ -hpage_nr_pages(page));
if (!isolate_lru_page(page)) {
int ret = SWAP_AGAIN;
@@ -227,7 +227,7 @@ long mlock_vma_pages_range(struct vm_area_struct *vma,
if (vma->vm_flags & (VM_IO | VM_PFNMAP))
goto no_mlock;
- if (!((vma->vm_flags & (VM_DONTEXPAND | VM_RESERVED)) ||
+ if (!((vma->vm_flags & VM_DONTEXPAND) ||
is_vm_hugetlb_page(vma) ||
vma == get_gate_vma(current->mm))) {
@@ -290,14 +290,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP);
if (page && !IS_ERR(page)) {
lock_page(page);
- /*
- * Like in __mlock_vma_pages_range(),
- * because we lock page here and migration is
- * blocked by the elevated reference, we need
- * only check for file-cache page truncation.
- */
- if (page->mapping)
- munlock_vma_page(page);
+ munlock_vma_page(page);
unlock_page(page);
put_page(page);
}