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mm: replace hpage_nr_pages with thp_nr_pages 

The thp prefix is more frequently used than hpage and we should be
consistent between the various functions.

[akpm@linux-foundation.org: fix mm/migrate.c]

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: http://lkml.kernel.org/r/20200629151959.15779-6-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5.9.x+fslc
Matthew Wilcox (Oracle) 2020-08-14 17:30:37 -07:00 committed by Linus Torvalds
parent af3bbc12df
commit 6c357848b4
20 changed files with 65 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
include/linux/huge_mm.h
View File

@ -271,9 +271,14 @@ static inline unsigned int thp_order(struct page *page)
return 0;
}
static inline int hpage_nr_pages(struct page *page)
/**
* thp_nr_pages - The number of regular pages in this huge page.
* @page: The head page of a huge page.
*/
static inline int thp_nr_pages(struct page *page)
{
if (unlikely(PageTransHuge(page)))
VM_BUG_ON_PGFLAGS(PageTail(page), page);
if (PageHead(page))
return HPAGE_PMD_NR;
return 1;
}
@ -336,9 +341,9 @@ static inline unsigned int thp_order(struct page *page)
return 0;
}
static inline int hpage_nr_pages(struct page *page)
static inline int thp_nr_pages(struct page *page)
{
VM_BUG_ON_PAGE(PageTail(page), page);
VM_BUG_ON_PGFLAGS(PageTail(page), page);
return 1;
}

6
include/linux/mm_inline.h
View File

@ -48,14 +48,14 @@ static __always_inline void update_lru_size(struct lruvec *lruvec,
static __always_inline void add_page_to_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
update_lru_size(lruvec, lru, page_zonenum(page), hpage_nr_pages(page));
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add(&page->lru, &lruvec->lists[lru]);
}
static __always_inline void add_page_to_lru_list_tail(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
update_lru_size(lruvec, lru, page_zonenum(page), hpage_nr_pages(page));
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add_tail(&page->lru, &lruvec->lists[lru]);
}
@ -63,7 +63,7 @@ static __always_inline void del_page_from_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
{
list_del(&page->lru);
update_lru_size(lruvec, lru, page_zonenum(page), -hpage_nr_pages(page));
update_lru_size(lruvec, lru, page_zonenum(page), -thp_nr_pages(page));
}
/**

6
include/linux/pagemap.h
View File

@ -381,7 +381,7 @@ static inline struct page *find_subpage(struct page *head, pgoff_t index)
if (PageHuge(head))
return head;
return head + (index & (hpage_nr_pages(head) - 1));
return head + (index & (thp_nr_pages(head) - 1));
}
struct page *find_get_entry(struct address_space *mapping, pgoff_t offset);
@ -773,7 +773,7 @@ static inline struct page *readahead_page(struct readahead_control *rac)
page = xa_load(&rac->mapping->i_pages, rac->_index);
VM_BUG_ON_PAGE(!PageLocked(page), page);
rac->_batch_count = hpage_nr_pages(page);
rac->_batch_count = thp_nr_pages(page);
return page;
}
@ -796,7 +796,7 @@ static inline unsigned int __readahead_batch(struct readahead_control *rac,
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageTail(page), page);
array[i++] = page;
rac->_batch_count += hpage_nr_pages(page);
rac->_batch_count += thp_nr_pages(page);
/*
* The page cache isn't using multi-index entries yet,

2
mm/compaction.c
View File

@ -1009,7 +1009,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
del_page_from_lru_list(page, lruvec, page_lru(page));
mod_node_page_state(page_pgdat(page),
NR_ISOLATED_ANON + page_is_file_lru(page),
hpage_nr_pages(page));
thp_nr_pages(page));
isolate_success:
list_add(&page->lru, &cc->migratepages);

2
mm/filemap.c
View File

@ -198,7 +198,7 @@ static void unaccount_page_cache_page(struct address_space *mapping,
if (PageHuge(page))
return;
nr = hpage_nr_pages(page);
nr = thp_nr_pages(page);
__mod_lruvec_page_state(page, NR_FILE_PAGES, -nr);
if (PageSwapBacked(page)) {

2
mm/gup.c
View File

@ -1637,7 +1637,7 @@ check_again:
mod_node_page_state(page_pgdat(head),
NR_ISOLATED_ANON +
page_is_file_lru(head),
hpage_nr_pages(head));
thp_nr_pages(head));
}
}
}

2
mm/internal.h
View File

@ -369,7 +369,7 @@ extern void clear_page_mlock(struct page *page);
static inline void mlock_migrate_page(struct page *newpage, struct page *page)
{
if (TestClearPageMlocked(page)) {
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
/* Holding pmd lock, no change in irq context: __mod is safe */
__mod_zone_page_state(page_zone(page), NR_MLOCK, -nr_pages);

10
mm/memcontrol.c
View File

@ -5589,7 +5589,7 @@ static int mem_cgroup_move_account(struct page *page,
{
struct lruvec *from_vec, *to_vec;
struct pglist_data *pgdat;
unsigned int nr_pages = compound ? hpage_nr_pages(page) : 1;
unsigned int nr_pages = compound ? thp_nr_pages(page) : 1;
int ret;
VM_BUG_ON(from == to);
@ -6682,7 +6682,7 @@ void mem_cgroup_calculate_protection(struct mem_cgroup *root,
*/
int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask)
{
unsigned int nr_pages = hpage_nr_pages(page);
unsigned int nr_pages = thp_nr_pages(page);
struct mem_cgroup *memcg = NULL;
int ret = 0;
@ -6912,7 +6912,7 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage)
return;
/* Force-charge the new page. The old one will be freed soon */
nr_pages = hpage_nr_pages(newpage);
nr_pages = thp_nr_pages(newpage);
page_counter_charge(&memcg->memory, nr_pages);
if (do_memsw_account())
@ -7114,7 +7114,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
* ancestor for the swap instead and transfer the memory+swap charge.
*/
swap_memcg = mem_cgroup_id_get_online(memcg);
nr_entries = hpage_nr_pages(page);
nr_entries = thp_nr_pages(page);
/* Get references for the tail pages, too */
if (nr_entries > 1)
mem_cgroup_id_get_many(swap_memcg, nr_entries - 1);
@ -7158,7 +7158,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
*/
int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry)
{
unsigned int nr_pages = hpage_nr_pages(page);
unsigned int nr_pages = thp_nr_pages(page);
struct page_counter *counter;
struct mem_cgroup *memcg;
unsigned short oldid;

7
mm/memory_hotplug.c
View File

@ -1299,7 +1299,7 @@ static int
do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
{
unsigned long pfn;
struct page *page;
struct page *page, *head;
int ret = 0;
LIST_HEAD(source);
@ -1307,15 +1307,14 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
if (!pfn_valid(pfn))
continue;
page = pfn_to_page(pfn);
head = compound_head(page);
if (PageHuge(page)) {
struct page *head = compound_head(page);
pfn = page_to_pfn(head) + compound_nr(head) - 1;
isolate_huge_page(head, &source);
continue;
} else if (PageTransHuge(page))
pfn = page_to_pfn(compound_head(page))
+ hpage_nr_pages(page) - 1;
pfn = page_to_pfn(head) + thp_nr_pages(page) - 1;
/*
* HWPoison pages have elevated reference counts so the migration would

2
mm/mempolicy.c
View File

@ -1049,7 +1049,7 @@ static int migrate_page_add(struct page *page, struct list_head *pagelist,
list_add_tail(&head->lru, pagelist);
mod_node_page_state(page_pgdat(head),
NR_ISOLATED_ANON + page_is_file_lru(head),
hpage_nr_pages(head));
thp_nr_pages(head));
} else if (flags & MPOL_MF_STRICT) {
/*
* Non-movable page may reach here. And, there may be

18
mm/migrate.c
View File

@ -193,7 +193,7 @@ void putback_movable_pages(struct list_head *l)
put_page(page);
} else {
mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON +
page_is_file_lru(page), -hpage_nr_pages(page));
page_is_file_lru(page), -thp_nr_pages(page));
putback_lru_page(page);
}
}
@ -386,7 +386,7 @@ static int expected_page_refs(struct address_space *mapping, struct page *page)
*/
expected_count += is_device_private_page(page);
if (mapping)
expected_count += hpage_nr_pages(page) + page_has_private(page);
expected_count += thp_nr_pages(page) + page_has_private(page);
return expected_count;
}
@ -441,7 +441,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
*/
newpage->index = page->index;
newpage->mapping = page->mapping;
page_ref_add(newpage, hpage_nr_pages(page)); /* add cache reference */
page_ref_add(newpage, thp_nr_pages(page)); /* add cache reference */
if (PageSwapBacked(page)) {
__SetPageSwapBacked(newpage);
if (PageSwapCache(page)) {
@ -474,7 +474,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
* to one less reference.
* We know this isn't the last reference.
*/
page_ref_unfreeze(page, expected_count - hpage_nr_pages(page));
page_ref_unfreeze(page, expected_count - thp_nr_pages(page));
xas_unlock(&xas);
/* Leave irq disabled to prevent preemption while updating stats */
@ -591,7 +591,7 @@ static void copy_huge_page(struct page *dst, struct page *src)
} else {
/* thp page */
BUG_ON(!PageTransHuge(src));
nr_pages = hpage_nr_pages(src);
nr_pages = thp_nr_pages(src);
}
for (i = 0; i < nr_pages; i++) {
@ -1213,7 +1213,7 @@ out:
*/
if (likely(!__PageMovable(page)))
mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON +
page_is_file_lru(page), -hpage_nr_pages(page));
page_is_file_lru(page), -thp_nr_pages(page));
}
/*
@ -1446,7 +1446,7 @@ retry:
* during migration.
*/
is_thp = PageTransHuge(page);
nr_subpages = hpage_nr_pages(page);
nr_subpages = thp_nr_pages(page);
cond_resched();
if (PageHuge(page))
@ -1670,7 +1670,7 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr,
list_add_tail(&head->lru, pagelist);
mod_node_page_state(page_pgdat(head),
NR_ISOLATED_ANON + page_is_file_lru(head),
hpage_nr_pages(head));
thp_nr_pages(head));
}
out_putpage:
/*
@ -2034,7 +2034,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
page_lru = page_is_file_lru(page);
mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru,
hpage_nr_pages(page));
thp_nr_pages(page));
/*
* Isolating the page has taken another reference, so the

9
mm/mlock.c
View File

@ -61,8 +61,7 @@ void clear_page_mlock(struct page *page)
if (!TestClearPageMlocked(page))
return;
mod_zone_page_state(page_zone(page), NR_MLOCK,
-hpage_nr_pages(page));
mod_zone_page_state(page_zone(page), NR_MLOCK, -thp_nr_pages(page));
count_vm_event(UNEVICTABLE_PGCLEARED);
/*
* The previous TestClearPageMlocked() corresponds to the smp_mb()
@ -95,7 +94,7 @@ void mlock_vma_page(struct page *page)
if (!TestSetPageMlocked(page)) {
mod_zone_page_state(page_zone(page), NR_MLOCK,
hpage_nr_pages(page));
thp_nr_pages(page));
count_vm_event(UNEVICTABLE_PGMLOCKED);
if (!isolate_lru_page(page))
putback_lru_page(page);
@ -192,7 +191,7 @@ unsigned int munlock_vma_page(struct page *page)
/*
* Serialize with any parallel __split_huge_page_refcount() which
* might otherwise copy PageMlocked to part of the tail pages before
* we clear it in the head page. It also stabilizes hpage_nr_pages().
* we clear it in the head page. It also stabilizes thp_nr_pages().
*/
spin_lock_irq(&pgdat->lru_lock);
@ -202,7 +201,7 @@ unsigned int munlock_vma_page(struct page *page)
goto unlock_out;
}
nr_pages = hpage_nr_pages(page);
nr_pages = thp_nr_pages(page);
__mod_zone_page_state(page_zone(page), NR_MLOCK, -nr_pages);
if (__munlock_isolate_lru_page(page, true)) {

2
mm/page_io.c
View File

@ -274,7 +274,7 @@ static inline void count_swpout_vm_event(struct page *page)
if (unlikely(PageTransHuge(page)))
count_vm_event(THP_SWPOUT);
#endif
count_vm_events(PSWPOUT, hpage_nr_pages(page));
count_vm_events(PSWPOUT, thp_nr_pages(page));
}
#if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)

2
mm/page_vma_mapped.c
View File

@ -61,7 +61,7 @@ static inline bool pfn_is_match(struct page *page, unsigned long pfn)
return page_pfn == pfn;
/* THP can be referenced by any subpage */
return pfn >= page_pfn && pfn - page_pfn < hpage_nr_pages(page);
return pfn >= page_pfn && pfn - page_pfn < thp_nr_pages(page);
}
/**

8
mm/rmap.c
View File

@ -1130,7 +1130,7 @@ void do_page_add_anon_rmap(struct page *page,
}
if (first) {
int nr = compound ? hpage_nr_pages(page) : 1;
int nr = compound ? thp_nr_pages(page) : 1;
/*
* We use the irq-unsafe __{inc|mod}_zone_page_stat because
* these counters are not modified in interrupt context, and
@ -1169,7 +1169,7 @@ void do_page_add_anon_rmap(struct page *page,
void page_add_new_anon_rmap(struct page *page,
struct vm_area_struct *vma, unsigned long address, bool compound)
{
int nr = compound ? hpage_nr_pages(page) : 1;
int nr = compound ? thp_nr_pages(page) : 1;
VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma);
__SetPageSwapBacked(page);
@ -1860,7 +1860,7 @@ static void rmap_walk_anon(struct page *page, struct rmap_walk_control *rwc,
return;
pgoff_start = page_to_pgoff(page);
pgoff_end = pgoff_start + hpage_nr_pages(page) - 1;
pgoff_end = pgoff_start + thp_nr_pages(page) - 1;
anon_vma_interval_tree_foreach(avc, &anon_vma->rb_root,
pgoff_start, pgoff_end) {
struct vm_area_struct *vma = avc->vma;
@ -1913,7 +1913,7 @@ static void rmap_walk_file(struct page *page, struct rmap_walk_control *rwc,
return;
pgoff_start = page_to_pgoff(page);
pgoff_end = pgoff_start + hpage_nr_pages(page) - 1;
pgoff_end = pgoff_start + thp_nr_pages(page) - 1;
if (!locked)
i_mmap_lock_read(mapping);
vma_interval_tree_foreach(vma, &mapping->i_mmap,

16
mm/swap.c
View File

@ -241,7 +241,7 @@ static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec,
del_page_from_lru_list(page, lruvec, page_lru(page));
ClearPageActive(page);
add_page_to_lru_list_tail(page, lruvec, page_lru(page));
(*pgmoved) += hpage_nr_pages(page);
(*pgmoved) += thp_nr_pages(page);
}
}
@ -312,7 +312,7 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages)
void lru_note_cost_page(struct page *page)
{
lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)),
page_is_file_lru(page), hpage_nr_pages(page));
page_is_file_lru(page), thp_nr_pages(page));
}
static void __activate_page(struct page *page, struct lruvec *lruvec,
@ -320,7 +320,7 @@ static void __activate_page(struct page *page, struct lruvec *lruvec,
{
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
int lru = page_lru_base_type(page);
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec, lru);
SetPageActive(page);
@ -500,7 +500,7 @@ void lru_cache_add_inactive_or_unevictable(struct page *page,
* lock is held(spinlock), which implies preemption disabled.
*/
__mod_zone_page_state(page_zone(page), NR_MLOCK,
hpage_nr_pages(page));
thp_nr_pages(page));
count_vm_event(UNEVICTABLE_PGMLOCKED);
}
lru_cache_add(page);
@ -532,7 +532,7 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec,
{
int lru;
bool active;
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
if (!PageLRU(page))
return;
@ -580,7 +580,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec,
{
if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) {
int lru = page_lru_base_type(page);
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE);
ClearPageActive(page);
@ -599,7 +599,7 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec,
if (PageLRU(page) && PageAnon(page) && PageSwapBacked(page) &&
!PageSwapCache(page) && !PageUnevictable(page)) {
bool active = PageActive(page);
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec,
LRU_INACTIVE_ANON + active);
@ -972,7 +972,7 @@ static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec,
{
enum lru_list lru;
int was_unevictable = TestClearPageUnevictable(page);
int nr_pages = hpage_nr_pages(page);
int nr_pages = thp_nr_pages(page);
VM_BUG_ON_PAGE(PageLRU(page), page);

6
mm/swap_state.c
View File

@ -130,7 +130,7 @@ int add_to_swap_cache(struct page *page, swp_entry_t entry,
struct address_space *address_space = swap_address_space(entry);
pgoff_t idx = swp_offset(entry);
XA_STATE_ORDER(xas, &address_space->i_pages, idx, compound_order(page));
unsigned long i, nr = hpage_nr_pages(page);
unsigned long i, nr = thp_nr_pages(page);
void *old;
VM_BUG_ON_PAGE(!PageLocked(page), page);
@ -183,7 +183,7 @@ void __delete_from_swap_cache(struct page *page,
swp_entry_t entry, void *shadow)
{
struct address_space *address_space = swap_address_space(entry);
int i, nr = hpage_nr_pages(page);
int i, nr = thp_nr_pages(page);
pgoff_t idx = swp_offset(entry);
XA_STATE(xas, &address_space->i_pages, idx);
@ -278,7 +278,7 @@ void delete_from_swap_cache(struct page *page)
xa_unlock_irq(&address_space->i_pages);
put_swap_page(page, entry);
page_ref_sub(page, hpage_nr_pages(page));
page_ref_sub(page, thp_nr_pages(page));
}
void clear_shadow_from_swap_cache(int type, unsigned long begin,

2
mm/swapfile.c
View File

@ -1370,7 +1370,7 @@ void put_swap_page(struct page *page, swp_entry_t entry)
unsigned char *map;
unsigned int i, free_entries = 0;
unsigned char val;
int size = swap_entry_size(hpage_nr_pages(page));
int size = swap_entry_size(thp_nr_pages(page));
si = _swap_info_get(entry);
if (!si)

6
mm/vmscan.c
View File

@ -1354,7 +1354,7 @@ static unsigned int shrink_page_list(struct list_head *page_list,
case PAGE_ACTIVATE:
goto activate_locked;
case PAGE_SUCCESS:
stat->nr_pageout += hpage_nr_pages(page);
stat->nr_pageout += thp_nr_pages(page);
if (PageWriteback(page))
goto keep;
@ -1862,7 +1862,7 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec,
SetPageLRU(page);
lru = page_lru(page);
nr_pages = hpage_nr_pages(page);
nr_pages = thp_nr_pages(page);
update_lru_size(lruvec, lru, page_zonenum(page), nr_pages);
list_move(&page->lru, &lruvec->lists[lru]);
@ -2065,7 +2065,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
* so we ignore them here.
*/
if ((vm_flags & VM_EXEC) && page_is_file_lru(page)) {
nr_rotated += hpage_nr_pages(page);
nr_rotated += thp_nr_pages(page);
list_add(&page->lru, &l_active);
continue;
}

6
mm/workingset.c
View File

@ -263,7 +263,7 @@ void *workingset_eviction(struct page *page, struct mem_cgroup *target_memcg)
VM_BUG_ON_PAGE(!PageLocked(page), page);
lruvec = mem_cgroup_lruvec(target_memcg, pgdat);
workingset_age_nonresident(lruvec, hpage_nr_pages(page));
workingset_age_nonresident(lruvec, thp_nr_pages(page));
/* XXX: target_memcg can be NULL, go through lruvec */
memcgid = mem_cgroup_id(lruvec_memcg(lruvec));
eviction = atomic_long_read(&lruvec->nonresident_age);
@ -374,7 +374,7 @@ void workingset_refault(struct page *page, void *shadow)
goto out;
SetPageActive(page);
workingset_age_nonresident(lruvec, hpage_nr_pages(page));
workingset_age_nonresident(lruvec, thp_nr_pages(page));
inc_lruvec_state(lruvec, WORKINGSET_ACTIVATE_BASE + file);
/* Page was active prior to eviction */
@ -411,7 +411,7 @@ void workingset_activation(struct page *page)
if (!mem_cgroup_disabled() && !memcg)
goto out;
lruvec = mem_cgroup_page_lruvec(page, page_pgdat(page));
workingset_age_nonresident(lruvec, hpage_nr_pages(page));
workingset_age_nonresident(lruvec, thp_nr_pages(page));
out:
rcu_read_unlock();
}