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memcg: rename high level charging functions

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mem_cgroup_newpage_charge is used only for charging anonymous memory so
it is better to rename it to mem_cgroup_charge_anon.

mem_cgroup_cache_charge is used for file backed memory so rename it to
mem_cgroup_charge_file.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michal Hocko 2014-04-07 15:37:46 -07:00 committed by Linus Torvalds
parent 6d1fdc4893
commit d715ae08f2
7 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/cgroups/memcg_test.txt
View File

@ -24,7 +24,7 @@ Please note that implementation details can be changed.
a page/swp_entry may be charged (usage += PAGE_SIZE) at
mem_cgroup_newpage_charge()
mem_cgroup_charge_anon()
Called at new page fault and Copy-On-Write.
mem_cgroup_try_charge_swapin()
@ -32,7 +32,7 @@ Please note that implementation details can be changed.
Followed by charge-commit-cancel protocol. (With swap accounting)
At commit, a charge recorded in swap_cgroup is removed.
mem_cgroup_cache_charge()
mem_cgroup_charge_file()
Called at add_to_page_cache()
mem_cgroup_cache_charge_swapin()

8
include/linux/memcontrol.h
View File

@ -65,7 +65,7 @@ struct mem_cgroup_reclaim_cookie {
* (Of course, if memcg does memory allocation in future, GFP_KERNEL is sane.)
*/
extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm,
extern int mem_cgroup_charge_anon(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
/* for swap handling */
extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
@ -74,7 +74,7 @@ extern void mem_cgroup_commit_charge_swapin(struct page *page,
struct mem_cgroup *memcg);
extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg);
extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
extern int mem_cgroup_charge_file(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask);
struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *);
@ -233,13 +233,13 @@ void mem_cgroup_print_bad_page(struct page *page);
#else /* CONFIG_MEMCG */
struct mem_cgroup;
static inline int mem_cgroup_newpage_charge(struct page *page,
static inline int mem_cgroup_charge_anon(struct page *page,
struct mm_struct *mm, gfp_t gfp_mask)
{
return 0;
}
static inline int mem_cgroup_cache_charge(struct page *page,
static inline int mem_cgroup_charge_file(struct page *page,
struct mm_struct *mm, gfp_t gfp_mask)
{
return 0;

2
mm/filemap.c
View File

@ -563,7 +563,7 @@ static int __add_to_page_cache_locked(struct page *page,
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageSwapBacked(page), page);
error = mem_cgroup_cache_charge(page, current->mm,
error = mem_cgroup_charge_file(page, current->mm,
gfp_mask & GFP_RECLAIM_MASK);
if (error)
return error;

8
mm/huge_memory.c
View File

@ -827,7 +827,7 @@ int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
count_vm_event(THP_FAULT_FALLBACK);
return VM_FAULT_FALLBACK;
}
if (unlikely(mem_cgroup_newpage_charge(page, mm, GFP_KERNEL))) {
if (unlikely(mem_cgroup_charge_anon(page, mm, GFP_KERNEL))) {
put_page(page);
count_vm_event(THP_FAULT_FALLBACK);
return VM_FAULT_FALLBACK;
@ -968,7 +968,7 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
__GFP_OTHER_NODE,
vma, address, page_to_nid(page));
if (unlikely(!pages[i] ||
mem_cgroup_newpage_charge(pages[i], mm,
mem_cgroup_charge_anon(pages[i], mm,
GFP_KERNEL))) {
if (pages[i])
put_page(pages[i]);
@ -1101,7 +1101,7 @@ alloc:
goto out;
}
if (unlikely(mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL))) {
if (unlikely(mem_cgroup_charge_anon(new_page, mm, GFP_KERNEL))) {
put_page(new_page);
if (page) {
split_huge_page(page);
@ -2359,7 +2359,7 @@ static void collapse_huge_page(struct mm_struct *mm,
if (!new_page)
return;
if (unlikely(mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL)))
if (unlikely(mem_cgroup_charge_anon(new_page, mm, GFP_KERNEL)))
return;
/*

4
mm/memcontrol.c
View File

@ -3818,7 +3818,7 @@ out:
return ret;
}
int mem_cgroup_newpage_charge(struct page *page,
int mem_cgroup_charge_anon(struct page *page,
struct mm_struct *mm, gfp_t gfp_mask)
{
unsigned int nr_pages = 1;
@ -3954,7 +3954,7 @@ void mem_cgroup_commit_charge_swapin(struct page *page,
MEM_CGROUP_CHARGE_TYPE_ANON);
}
int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
int mem_cgroup_charge_file(struct page *page, struct mm_struct *mm,
gfp_t gfp_mask)
{
enum charge_type type = MEM_CGROUP_CHARGE_TYPE_CACHE;

6
mm/memory.c
View File

@ -2828,7 +2828,7 @@ gotten:
}
__SetPageUptodate(new_page);
if (mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL))
if (mem_cgroup_charge_anon(new_page, mm, GFP_KERNEL))
goto oom_free_new;
mmun_start = address & PAGE_MASK;
@ -3281,7 +3281,7 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
*/
__SetPageUptodate(page);
if (mem_cgroup_newpage_charge(page, mm, GFP_KERNEL))
if (mem_cgroup_charge_anon(page, mm, GFP_KERNEL))
goto oom_free_page;
entry = mk_pte(page, vma->vm_page_prot);
@ -3537,7 +3537,7 @@ static int do_cow_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (!new_page)
return VM_FAULT_OOM;
if (mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL)) {
if (mem_cgroup_charge_anon(new_page, mm, GFP_KERNEL)) {
page_cache_release(new_page);
return VM_FAULT_OOM;
}

6
mm/shmem.c
View File

@ -683,7 +683,7 @@ int shmem_unuse(swp_entry_t swap, struct page *page)
* the shmem_swaplist_mutex which might hold up shmem_writepage().
* Charged back to the user (not to caller) when swap account is used.
*/
error = mem_cgroup_cache_charge(page, current->mm, GFP_KERNEL);
error = mem_cgroup_charge_file(page, current->mm, GFP_KERNEL);
if (error)
goto out;
/* No radix_tree_preload: swap entry keeps a place for page in tree */
@ -1080,7 +1080,7 @@ repeat:
goto failed;
}
error = mem_cgroup_cache_charge(page, current->mm,
error = mem_cgroup_charge_file(page, current->mm,
gfp & GFP_RECLAIM_MASK);
if (!error) {
error = shmem_add_to_page_cache(page, mapping, index,
@ -1134,7 +1134,7 @@ repeat:
SetPageSwapBacked(page);
__set_page_locked(page);
error = mem_cgroup_cache_charge(page, current->mm,
error = mem_cgroup_charge_file(page, current->mm,
gfp & GFP_RECLAIM_MASK);
if (error)
goto decused;