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mm: page_cgroup: rename file to mm/swap_cgroup.c

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Now that the external page_cgroup data structure and its lookup is gone,
the only code remaining in there is swap slot accounting.

Rename it and move the conditional compilation into mm/Makefile.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2014-12-10 15:44:55 -08:00 • committed by Linus Torvalds
parent 1306a85aed
commit 5d1ea48bdd
7 changed files with 13 additions and 14 deletions
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8
include/linux/page_cgroup.h → include/linux/swap_cgroup.h
View file

@ -1,15 +1,17 @@
#ifndef __LINUX_PAGE_CGROUP_H
#define __LINUX_PAGE_CGROUP_H
#ifndef __LINUX_SWAP_CGROUP_H
#define __LINUX_SWAP_CGROUP_H
#include <linux/swap.h>
#ifdef CONFIG_MEMCG_SWAP
extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
unsigned short old, unsigned short new);
extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id);
extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent);
extern int swap_cgroup_swapon(int type, unsigned long max_pages);
extern void swap_cgroup_swapoff(int type);
#else
static inline
@ -37,4 +39,4 @@ static inline void swap_cgroup_swapoff(int type)
#endif /* CONFIG_MEMCG_SWAP */
#endif /* __LINUX_PAGE_CGROUP_H */
#endif /* __LINUX_SWAP_CGROUP_H */