diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 96257f995caa918c61c344abc568e3b6f134ed04..d5bf3b5bfe6d393816e6f71a6ac39a3ba97f7fd7 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -355,8 +355,7 @@ static inline unsigned long mem_cgroup_protection(struct mem_cgroup *memcg,
enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root,
struct mem_cgroup *memcg);
-int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask,
- bool lrucare);
+int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask);
void mem_cgroup_uncharge(struct page *page);
void mem_cgroup_uncharge_list(struct list_head *page_list);
@@ -839,7 +838,7 @@ static inline enum mem_cgroup_protection mem_cgroup_protected(
}
static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
- gfp_t gfp_mask, bool lrucare)
+ gfp_t gfp_mask)
{
return 0;
}
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 4253c153e985eb94d774da303ae637c3f2ee7f44..eddc8db96027949cb526da4e7348157908c498a3 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -167,8 +167,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr,
addr + PAGE_SIZE);
if (new_page) {
- err = mem_cgroup_charge(new_page, vma->vm_mm, GFP_KERNEL,
- false);
+ err = mem_cgroup_charge(new_page, vma->vm_mm, GFP_KERNEL);
if (err)
return err;
}
diff --git a/mm/filemap.c b/mm/filemap.c
index f08b0ca34e311a097f7197508b5b6eb68d1bd03e..45599062198980647c0a20a0266d4b6ce435c30e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -845,7 +845,7 @@ static int __add_to_page_cache_locked(struct page *page,
page->index = offset;
if (!huge) {
- error = mem_cgroup_charge(page, current->mm, gfp_mask, false);
+ error = mem_cgroup_charge(page, current->mm, gfp_mask);
if (error)
goto error;
}
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e9201a88157e30667048e9ee63abd52224448e05..6df182a18d2cc9369014f3aa3890145fdc8e26a5 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -593,7 +593,7 @@ static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf,
VM_BUG_ON_PAGE(!PageCompound(page), page);
- if (mem_cgroup_charge(page, vma->vm_mm, gfp, false)) {
+ if (mem_cgroup_charge(page, vma->vm_mm, gfp)) {
put_page(page);
count_vm_event(THP_FAULT_FALLBACK);
count_vm_event(THP_FAULT_FALLBACK_CHARGE);
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 32c85b81837a101c6d0b2762f37daee94c384a74..f29038c485e09f6c9e185d31519d8364546b919a 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1059,7 +1059,7 @@ static void collapse_huge_page(struct mm_struct *mm,
goto out_nolock;
}
- if (unlikely(mem_cgroup_charge(new_page, mm, gfp, false))) {
+ if (unlikely(mem_cgroup_charge(new_page, mm, gfp))) {
result = SCAN_CGROUP_CHARGE_FAIL;
goto out_nolock;
}
@@ -1632,7 +1632,7 @@ static void collapse_file(struct mm_struct *mm,
goto out;
}
- if (unlikely(mem_cgroup_charge(new_page, mm, gfp, false))) {
+ if (unlikely(mem_cgroup_charge(new_page, mm, gfp))) {
result = SCAN_CGROUP_CHARGE_FAIL;
goto out;
}
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 425a265dc2a009ab58e27cae8a1fadf27f62c27c..316a84025090dbbf5bf796a35f7a889c6ad5e9b2 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2655,51 +2655,9 @@ static void cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages)
}
#endif
-static void lock_page_lru(struct page *page, int *isolated)
+static void commit_charge(struct page *page, struct mem_cgroup *memcg)
{
- pg_data_t *pgdat = page_pgdat(page);
-
- spin_lock_irq(&pgdat->lru_lock);
- if (PageLRU(page)) {
- struct lruvec *lruvec;
-
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
- ClearPageLRU(page);
- del_page_from_lru_list(page, lruvec, page_lru(page));
- *isolated = 1;
- } else
- *isolated = 0;
-}
-
-static void unlock_page_lru(struct page *page, int isolated)
-{
- pg_data_t *pgdat = page_pgdat(page);
-
- if (isolated) {
- struct lruvec *lruvec;
-
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
- VM_BUG_ON_PAGE(PageLRU(page), page);
- SetPageLRU(page);
- add_page_to_lru_list(page, lruvec, page_lru(page));
- }
- spin_unlock_irq(&pgdat->lru_lock);
-}
-
-static void commit_charge(struct page *page, struct mem_cgroup *memcg,
- bool lrucare)
-{
- int isolated;
-
VM_BUG_ON_PAGE(page->mem_cgroup, page);
-
- /*
- * In some cases, SwapCache and FUSE(splice_buf->radixtree), the page
- * may already be on some other mem_cgroup's LRU. Take care of it.
- */
- if (lrucare)
- lock_page_lru(page, &isolated);
-
/*
* Nobody should be changing or seriously looking at
* page->mem_cgroup at this point:
@@ -2715,9 +2673,6 @@ static void commit_charge(struct page *page, struct mem_cgroup *memcg,
* have the page locked
*/
page->mem_cgroup = memcg;
-
- if (lrucare)
- unlock_page_lru(page, isolated);
}
#ifdef CONFIG_MEMCG_KMEM
@@ -6503,22 +6458,18 @@ out:
* @page: page to charge
* @mm: mm context of the victim
* @gfp_mask: reclaim mode
- * @lrucare: page might be on the LRU already
*
* Try to charge @page to the memcg that @mm belongs to, reclaiming
* pages according to @gfp_mask if necessary.
*
* Returns 0 on success. Otherwise, an error code is returned.
*/
-int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask,
- bool lrucare)
+int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask)
{
unsigned int nr_pages = hpage_nr_pages(page);
struct mem_cgroup *memcg = NULL;
int ret = 0;
- VM_BUG_ON_PAGE(PageLRU(page) && !lrucare, page);
-
if (mem_cgroup_disabled())
goto out;
@@ -6552,7 +6503,7 @@ int mem_cgroup_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask,
if (ret)
goto out_put;
- commit_charge(page, memcg, lrucare);
+ commit_charge(page, memcg);
local_irq_disable();
mem_cgroup_charge_statistics(memcg, page, nr_pages);
@@ -6753,7 +6704,7 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage)
page_counter_charge(&memcg->memsw, nr_pages);
css_get_many(&memcg->css, nr_pages);
- commit_charge(newpage, memcg, false);
+ commit_charge(newpage, memcg);
local_irq_save(flags);
mem_cgroup_charge_statistics(memcg, newpage, nr_pages);
diff --git a/mm/memory.c b/mm/memory.c
index 9c886e4207a2829307d65653648025c64fda86a3..d50d8b498af51dbca1a27c8814a7ce7f420be664 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2675,7 +2675,7 @@ static vm_fault_t wp_page_copy(struct vm_fault *vmf)
}
}
- if (mem_cgroup_charge(new_page, mm, GFP_KERNEL, false))
+ if (mem_cgroup_charge(new_page, mm, GFP_KERNEL))
goto oom_free_new;
cgroup_throttle_swaprate(new_page, GFP_KERNEL);
@@ -3134,7 +3134,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
/* Tell memcg to use swap ownership records */
SetPageSwapCache(page);
err = mem_cgroup_charge(page, vma->vm_mm,
- GFP_KERNEL, false);
+ GFP_KERNEL);
ClearPageSwapCache(page);
if (err)
goto out_page;
@@ -3358,7 +3358,7 @@ static vm_fault_t do_anonymous_page(struct vm_fault *vmf)
if (!page)
goto oom;
- if (mem_cgroup_charge(page, vma->vm_mm, GFP_KERNEL, false))
+ if (mem_cgroup_charge(page, vma->vm_mm, GFP_KERNEL))
goto oom_free_page;
cgroup_throttle_swaprate(page, GFP_KERNEL);
@@ -3854,7 +3854,7 @@ static vm_fault_t do_cow_fault(struct vm_fault *vmf)
if (!vmf->cow_page)
return VM_FAULT_OOM;
- if (mem_cgroup_charge(vmf->cow_page, vma->vm_mm, GFP_KERNEL, false)) {
+ if (mem_cgroup_charge(vmf->cow_page, vma->vm_mm, GFP_KERNEL)) {
put_page(vmf->cow_page);
return VM_FAULT_OOM;
}
diff --git a/mm/migrate.c b/mm/migrate.c
index 44cee40221ecdebf6273dfda405ead5acd02b918..7bfd0962149e2072296849922a5a8fb5ce6faf87 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2786,7 +2786,7 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
if (unlikely(anon_vma_prepare(vma)))
goto abort;
- if (mem_cgroup_charge(page, vma->vm_mm, GFP_KERNEL, false))
+ if (mem_cgroup_charge(page, vma->vm_mm, GFP_KERNEL))
goto abort;
/*
diff --git a/mm/shmem.c b/mm/shmem.c
index b791161850460e8087f9c628d06f139487db6e2f..e83de27ce8f4ac7365d263be3586db3d39021c80 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -624,7 +624,7 @@ static int shmem_add_to_page_cache(struct page *page,
page->index = index;
if (!PageSwapCache(page)) {
- error = mem_cgroup_charge(page, charge_mm, gfp, false);
+ error = mem_cgroup_charge(page, charge_mm, gfp);
if (error) {
if (PageTransHuge(page)) {
count_vm_event(THP_FILE_FALLBACK);
diff --git a/mm/swap_state.c b/mm/swap_state.c
index f841257a3014cc27a36bbeeab923008ca645a1e7..ab0462819a5b974a849143d12f0585852e284070 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -435,7 +435,7 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
goto fail_unlock;
}
- if (mem_cgroup_charge(page, NULL, gfp_mask, false)) {
+ if (mem_cgroup_charge(page, NULL, gfp_mask)) {
delete_from_swap_cache(page);
goto fail_unlock;
}
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c
index 2745489415cc0e4f0ecf52fd8dd838cb096ac463..7f5194046b01be1b239446c4a6dc29e768aa7d08 100644
--- a/mm/userfaultfd.c
+++ b/mm/userfaultfd.c
@@ -96,7 +96,7 @@ static int mcopy_atomic_pte(struct mm_struct *dst_mm,
__SetPageUptodate(page);
ret = -ENOMEM;
- if (mem_cgroup_charge(page, dst_mm, GFP_KERNEL, false))
+ if (mem_cgroup_charge(page, dst_mm, GFP_KERNEL))
goto out_release;
_dst_pte = pte_mkdirty(mk_pte(page, dst_vma->vm_page_prot));