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Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index ee5e612b4cd8..c0efe921bca5 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -402,6 +402,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
struct zone *oldzone, *newzone;
int dirty;
int expected_count = expected_page_refs(mapping, page) + extra_count;
+ int nr = thp_nr_pages(page);
if (!mapping) {
/* Anonymous page without mapping */
@@ -437,7 +438,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
*/
newpage->index = page->index;
newpage->mapping = page->mapping;
- page_ref_add(newpage, thp_nr_pages(page)); /* add cache reference */
+ page_ref_add(newpage, nr); /* add cache reference */
if (PageSwapBacked(page)) {
__SetPageSwapBacked(newpage);
if (PageSwapCache(page)) {
@@ -459,7 +460,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
if (PageTransHuge(page)) {
int i;
- for (i = 1; i < HPAGE_PMD_NR; i++) {
+ for (i = 1; i < nr; i++) {
xas_next(&xas);
xas_store(&xas, newpage);
}
@@ -470,7 +471,7 @@ 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 - thp_nr_pages(page));
+ page_ref_unfreeze(page, expected_count - nr);
xas_unlock(&xas);
/* Leave irq disabled to prevent preemption while updating stats */
@@ -493,17 +494,17 @@ int migrate_page_move_mapping(struct address_space *mapping,
old_lruvec = mem_cgroup_lruvec(memcg, oldzone->zone_pgdat);
new_lruvec = mem_cgroup_lruvec(memcg, newzone->zone_pgdat);
- __dec_lruvec_state(old_lruvec, NR_FILE_PAGES);
- __inc_lruvec_state(new_lruvec, NR_FILE_PAGES);
+ __mod_lruvec_state(old_lruvec, NR_FILE_PAGES, -nr);
+ __mod_lruvec_state(new_lruvec, NR_FILE_PAGES, nr);
if (PageSwapBacked(page) && !PageSwapCache(page)) {
- __dec_lruvec_state(old_lruvec, NR_SHMEM);
- __inc_lruvec_state(new_lruvec, NR_SHMEM);
+ __mod_lruvec_state(old_lruvec, NR_SHMEM, -nr);
+ __mod_lruvec_state(new_lruvec, NR_SHMEM, nr);
}
if (dirty && mapping_can_writeback(mapping)) {
- __dec_node_state(oldzone->zone_pgdat, NR_FILE_DIRTY);
- __dec_zone_state(oldzone, NR_ZONE_WRITE_PENDING);
- __inc_node_state(newzone->zone_pgdat, NR_FILE_DIRTY);
- __inc_zone_state(newzone, NR_ZONE_WRITE_PENDING);
+ __mod_lruvec_state(old_lruvec, NR_FILE_DIRTY, -nr);
+ __mod_zone_page_state(oldzone, NR_ZONE_WRITE_PENDING, -nr);
+ __mod_lruvec_state(new_lruvec, NR_FILE_DIRTY, nr);
+ __mod_zone_page_state(newzone, NR_ZONE_WRITE_PENDING, nr);
}
}
local_irq_enable();