struct shrinker *shrinker;
unsigned long freed = 0;
- if (memcg && !memcg_kmem_is_active(memcg))
+ if (memcg && !memcg_kmem_online(memcg))
return 0;
if (nr_scanned == 0)
int may_enter_fs;
enum page_references references = PAGEREF_RECLAIM_CLEAN;
bool dirty, writeback;
+ bool lazyfree = false;
+ int ret = SWAP_SUCCESS;
cond_resched();
goto keep_locked;
if (!add_to_swap(page, page_list))
goto activate_locked;
+ lazyfree = true;
may_enter_fs = 1;
/* Adding to swap updated mapping */
* processes. Try to unmap it here.
*/
if (page_mapped(page) && mapping) {
- switch (try_to_unmap(page,
- ttu_flags|TTU_BATCH_FLUSH)) {
+ switch (ret = try_to_unmap(page, lazyfree ?
+ (ttu_flags | TTU_BATCH_FLUSH | TTU_LZFREE) :
+ (ttu_flags | TTU_BATCH_FLUSH))) {
case SWAP_FAIL:
goto activate_locked;
case SWAP_AGAIN:
goto keep_locked;
case SWAP_MLOCK:
goto cull_mlocked;
+ case SWAP_LZFREE:
+ goto lazyfree;
case SWAP_SUCCESS:
; /* try to free the page below */
}
}
}
+lazyfree:
if (!mapping || !__remove_mapping(mapping, page, true))
goto keep_locked;
* we obviously don't have to worry about waking up a process
* waiting on the page lock, because there are no references.
*/
- __clear_page_locked(page);
+ __ClearPageLocked(page);
free_it:
+ if (ret == SWAP_LZFREE)
+ count_vm_event(PGLAZYFREED);
+
nr_reclaimed++;
/*