#include <linux/memcontrol.h>
#include <linux/syscalls.h>
#include <linux/hugetlb.h>
+#include <linux/hugetlb_cgroup.h>
#include <linux/gfp.h>
#include <asm/tlbflush.h>
{
int rc = -EAGAIN;
int remap_swapcache = 1;
- int charge = 0;
struct mem_cgroup *mem;
struct anon_vma *anon_vma = NULL;
}
/* charge against new page */
- charge = mem_cgroup_prepare_migration(page, newpage, &mem, GFP_KERNEL);
- if (charge == -ENOMEM) {
- rc = -ENOMEM;
- goto unlock;
- }
- BUG_ON(charge);
+ mem_cgroup_prepare_migration(page, newpage, &mem);
if (PageWriteback(page)) {
/*
put_anon_vma(anon_vma);
uncharge:
- if (!charge)
- mem_cgroup_end_migration(mem, page, newpage, rc == 0);
+ mem_cgroup_end_migration(mem, page, newpage, rc == 0);
unlock:
unlock_page(page);
out:
if (anon_vma)
put_anon_vma(anon_vma);
- unlock_page(hpage);
-out:
- if (rc != -EAGAIN) {
- list_del(&hpage->lru);
- put_page(hpage);
- }
+ if (!rc)
+ hugetlb_cgroup_migrate(hpage, new_hpage);
+ unlock_page(hpage);
+out:
put_page(new_hpage);
-
if (result) {
if (rc)
*result = rc;
return nr_failed + retry;
}
-int migrate_huge_pages(struct list_head *from,
- new_page_t get_new_page, unsigned long private, bool offlining,
- enum migrate_mode mode)
+int migrate_huge_page(struct page *hpage, new_page_t get_new_page,
+ unsigned long private, bool offlining,
+ enum migrate_mode mode)
{
- int retry = 1;
- int nr_failed = 0;
- int pass = 0;
- struct page *page;
- struct page *page2;
- int rc;
-
- for (pass = 0; pass < 10 && retry; pass++) {
- retry = 0;
-
- list_for_each_entry_safe(page, page2, from, lru) {
+ int pass, rc;
+
+ for (pass = 0; pass < 10; pass++) {
+ rc = unmap_and_move_huge_page(get_new_page,
+ private, hpage, pass > 2, offlining,
+ mode);
+ switch (rc) {
+ case -ENOMEM:
+ goto out;
+ case -EAGAIN:
+ /* try again */
cond_resched();
-
- rc = unmap_and_move_huge_page(get_new_page,
- private, page, pass > 2, offlining,
- mode);
-
- switch(rc) {
- case -ENOMEM:
- goto out;
- case -EAGAIN:
- retry++;
- break;
- case 0:
- break;
- default:
- /* Permanent failure */
- nr_failed++;
- break;
- }
+ break;
+ case 0:
+ goto out;
+ default:
+ rc = -EIO;
+ goto out;
}
}
- rc = 0;
out:
- if (rc)
- return rc;
-
- return nr_failed + retry;
+ return rc;
}
#ifdef CONFIG_NUMA