nid = huge_node(vma, address, gfp_mask, &mpol, &nodemask);
page = dequeue_huge_page_nodemask(h, gfp_mask, nid, nodemask);
if (page && !avoid_reserve && vma_has_reserves(vma, chg)) {
- SetPagePrivate(page);
+ SetHPageRestoreReserve(page);
h->resv_huge_pages--;
}
static void update_and_free_page(struct hstate *h, struct page *page)
{
int i;
+ struct page *subpage = page;
if (hstate_is_gigantic(h) && !gigantic_page_runtime_supported())
return;
h->nr_huge_pages--;
h->nr_huge_pages_node[page_to_nid(page)]--;
- for (i = 0; i < pages_per_huge_page(h); i++) {
- page[i].flags &= ~(1 << PG_locked | 1 << PG_error |
+ for (i = 0; i < pages_per_huge_page(h);
+ i++, subpage = mem_map_next(subpage, page, i)) {
+ subpage->flags &= ~(1 << PG_locked | 1 << PG_error |
1 << PG_referenced | 1 << PG_dirty |
1 << PG_active | 1 << PG_private |
1 << PG_writeback);
return NULL;
}
-/*
- * Test to determine whether the hugepage is "active/in-use" (i.e. being linked
- * to hstate->hugepage_activelist.)
- *
- * This function can be called for tail pages, but never returns true for them.
- */
-bool page_huge_active(struct page *page)
-{
- return PageHeadHuge(page) && PagePrivate(&page[1]);
-}
-
-/* never called for tail page */
-void set_page_huge_active(struct page *page)
-{
- VM_BUG_ON_PAGE(!PageHeadHuge(page), page);
- SetPagePrivate(&page[1]);
-}
-
-static void clear_page_huge_active(struct page *page)
-{
- VM_BUG_ON_PAGE(!PageHeadHuge(page), page);
- ClearPagePrivate(&page[1]);
-}
-
/*
* Internal hugetlb specific page flag. Do not use outside of the hugetlb
* code
*/
struct hstate *h = page_hstate(page);
int nid = page_to_nid(page);
- struct hugepage_subpool *spool =
- (struct hugepage_subpool *)page_private(page);
+ struct hugepage_subpool *spool = hugetlb_page_subpool(page);
bool restore_reserve;
VM_BUG_ON_PAGE(page_count(page), page);
VM_BUG_ON_PAGE(page_mapcount(page), page);
- set_page_private(page, 0);
+ hugetlb_set_page_subpool(page, NULL);
page->mapping = NULL;
- restore_reserve = PagePrivate(page);
- ClearPagePrivate(page);
+ restore_reserve = HPageRestoreReserve(page);
+ ClearHPageRestoreReserve(page);
/*
- * If PagePrivate() was set on page, page allocation consumed a
+ * If HPageRestoreReserve was set on page, page allocation consumed a
* reservation. If the page was associated with a subpool, there
* would have been a page reserved in the subpool before allocation
* via hugepage_subpool_get_pages(). Since we are 'restoring' the
}
spin_lock(&hugetlb_lock);
- clear_page_huge_active(page);
+ ClearHPageMigratable(page);
hugetlb_cgroup_uncharge_page(hstate_index(h),
pages_per_huge_page(h), page);
hugetlb_cgroup_uncharge_page_rsvd(hstate_index(h),
* This routine is called to restore a reservation on error paths. In the
* specific error paths, a huge page was allocated (via alloc_huge_page)
* and is about to be freed. If a reservation for the page existed,
- * alloc_huge_page would have consumed the reservation and set PagePrivate
- * in the newly allocated page. When the page is freed via free_huge_page,
- * the global reservation count will be incremented if PagePrivate is set.
- * However, free_huge_page can not adjust the reserve map. Adjust the
- * reserve map here to be consistent with global reserve count adjustments
- * to be made by free_huge_page.
+ * alloc_huge_page would have consumed the reservation and set
+ * HPageRestoreReserve in the newly allocated page. When the page is freed
+ * via free_huge_page, the global reservation count will be incremented if
+ * HPageRestoreReserve is set. However, free_huge_page can not adjust the
+ * reserve map. Adjust the reserve map here to be consistent with global
+ * reserve count adjustments to be made by free_huge_page.
*/
static void restore_reserve_on_error(struct hstate *h,
struct vm_area_struct *vma, unsigned long address,
struct page *page)
{
- if (unlikely(PagePrivate(page))) {
+ if (unlikely(HPageRestoreReserve(page))) {
long rc = vma_needs_reservation(h, vma, address);
if (unlikely(rc < 0)) {
/*
* Rare out of memory condition in reserve map
- * manipulation. Clear PagePrivate so that
+ * manipulation. Clear HPageRestoreReserve so that
* global reserve count will not be incremented
* by free_huge_page. This will make it appear
* as though the reservation for this page was
* is better than inconsistent global huge page
* accounting of reserve counts.
*/
- ClearPagePrivate(page);
+ ClearHPageRestoreReserve(page);
} else if (rc) {
rc = vma_add_reservation(h, vma, address);
if (unlikely(rc < 0))
* See above comment about rare out of
* memory condition.
*/
- ClearPagePrivate(page);
+ ClearHPageRestoreReserve(page);
} else
vma_end_reservation(h, vma, address);
}
if (!page)
goto out_uncharge_cgroup;
if (!avoid_reserve && vma_has_reserves(vma, gbl_chg)) {
- SetPagePrivate(page);
+ SetHPageRestoreReserve(page);
h->resv_huge_pages--;
}
spin_lock(&hugetlb_lock);
spin_unlock(&hugetlb_lock);
- set_page_private(page, (unsigned long)spool);
+ hugetlb_set_page_subpool(page, spool);
map_commit = vma_commit_reservation(h, vma, addr);
if (unlikely(map_chg > map_commit)) {
if (hstate_is_gigantic(h)) {
if (hugetlb_cma_size) {
pr_warn_once("HugeTLB: hugetlb_cma is enabled, skip boot time allocation\n");
- break;
+ goto free;
}
if (!alloc_bootmem_huge_page(h))
break;
h->max_huge_pages, buf, i);
h->max_huge_pages = i;
}
-
+free:
kfree(node_alloc_noretry);
}
{
int i;
+ BUILD_BUG_ON(sizeof_field(struct page, private) * BITS_PER_BYTE <
+ __NR_HPAGEFLAGS);
+
if (!hugepages_supported()) {
if (hugetlb_max_hstate || default_hstate_max_huge_pages)
pr_warn("HugeTLB: huge pages not supported, ignoring associated command-line parameters\n");
spin_lock(ptl);
ptep = huge_pte_offset(mm, haddr, huge_page_size(h));
if (likely(ptep && pte_same(huge_ptep_get(ptep), pte))) {
- ClearPagePrivate(new_page);
+ ClearHPageRestoreReserve(new_page);
/* Break COW */
huge_ptep_clear_flush(vma, haddr, ptep);
make_huge_pte(vma, new_page, 1));
page_remove_rmap(old_page, true);
hugepage_add_new_anon_rmap(new_page, vma, haddr);
- set_page_huge_active(new_page);
+ SetHPageMigratable(new_page);
/* Make the old page be freed below */
new_page = old_page;
}
if (err)
return err;
- ClearPagePrivate(page);
+ ClearHPageRestoreReserve(page);
/*
* set page dirty so that it will not be removed from cache/file
goto backout;
if (anon_rmap) {
- ClearPagePrivate(page);
+ ClearHPageRestoreReserve(page);
hugepage_add_new_anon_rmap(page, vma, haddr);
} else
page_dup_rmap(page, true);
spin_unlock(ptl);
/*
- * Only make newly allocated pages active. Existing pages found
- * in the pagecache could be !page_huge_active() if they have been
- * isolated for migration.
+ * Only set HPageMigratable in newly allocated pages. Existing pages
+ * found in the pagecache may not have HPageMigratableset if they have
+ * been isolated for migration.
*/
if (new_page)
- set_page_huge_active(page);
+ SetHPageMigratable(page);
unlock_page(page);
out:
if (vm_shared) {
page_dup_rmap(page, true);
} else {
- ClearPagePrivate(page);
+ ClearHPageRestoreReserve(page);
hugepage_add_new_anon_rmap(page, dst_vma, dst_addr);
}
update_mmu_cache(dst_vma, dst_addr, dst_pte);
spin_unlock(ptl);
- set_page_huge_active(page);
+ SetHPageMigratable(page);
if (vm_shared)
unlock_page(page);
ret = 0;
bool ret = true;
spin_lock(&hugetlb_lock);
- if (!PageHeadHuge(page) || !page_huge_active(page) ||
+ if (!PageHeadHuge(page) ||
+ !HPageMigratable(page) ||
!get_page_unless_zero(page)) {
ret = false;
goto unlock;
}
- clear_page_huge_active(page);
+ ClearHPageMigratable(page);
list_move_tail(&page->lru, list);
unlock:
spin_unlock(&hugetlb_lock);
void putback_active_hugepage(struct page *page)
{
spin_lock(&hugetlb_lock);
- set_page_huge_active(page);
+ SetHPageMigratable(page);
list_move_tail(&page->lru, &(page_hstate(page))->hugepage_activelist);
spin_unlock(&hugetlb_lock);
put_page(page);
projects / linux-2.6-microblaze.git / blobdiff