mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page()
Rename (__)memcg_kmem_(un)charge() into (__)memcg_kmem_(un)charge_page()
to better reflect what they are actually doing:
1) call __memcg_kmem_(un)charge_memcg() to actually charge or uncharge
the current memcg
2) set or clear the PageKmemcg flag
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Link: http://lkml.kernel.org/r/20200109202659.752357-4-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/fork.c b/kernel/fork.c
index d90af13..e37e12c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -281,7 +281,7 @@
MEMCG_KERNEL_STACK_KB,
-(int)(PAGE_SIZE / 1024));
- memcg_kmem_uncharge(vm->pages[i], 0);
+ memcg_kmem_uncharge_page(vm->pages[i], 0);
}
for (i = 0; i < NR_CACHED_STACKS; i++) {
@@ -413,12 +413,13 @@
for (i = 0; i < THREAD_SIZE / PAGE_SIZE; i++) {
/*
- * If memcg_kmem_charge() fails, page->mem_cgroup
- * pointer is NULL, and both memcg_kmem_uncharge()
+ * If memcg_kmem_charge_page() fails, page->mem_cgroup
+ * pointer is NULL, and both memcg_kmem_uncharge_page()
* and mod_memcg_page_state() in free_thread_stack()
* will ignore this page. So it's safe.
*/
- ret = memcg_kmem_charge(vm->pages[i], GFP_KERNEL, 0);
+ ret = memcg_kmem_charge_page(vm->pages[i], GFP_KERNEL,
+ 0);
if (ret)
return ret;