From 5d1ea48bdde67898e87d6d8f511fd097fa64c749 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 10 Dec 2014 15:44:55 -0800 Subject: mm: page_cgroup: rename file to mm/swap_cgroup.c 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 Acked-by: Michal Hocko Acked-by: Vladimir Davydov Acked-by: David S. Miller Acked-by: KAMEZAWA Hiroyuki Cc: "Kirill A. Shutemov" Cc: Tejun Heo Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap_cgroup.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 include/linux/swap_cgroup.h (limited to 'include/linux/swap_cgroup.h') diff --git a/include/linux/swap_cgroup.h b/include/linux/swap_cgroup.h new file mode 100644 index 000000000000..145306bdc92f --- /dev/null +++ b/include/linux/swap_cgroup.h @@ -0,0 +1,42 @@ +#ifndef __LINUX_SWAP_CGROUP_H +#define __LINUX_SWAP_CGROUP_H + +#include + +#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 +unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id) +{ + return 0; +} + +static inline +unsigned short lookup_swap_cgroup_id(swp_entry_t ent) +{ + return 0; +} + +static inline int +swap_cgroup_swapon(int type, unsigned long max_pages) +{ + return 0; +} + +static inline void swap_cgroup_swapoff(int type) +{ + return; +} + +#endif /* CONFIG_MEMCG_SWAP */ + +#endif /* __LINUX_SWAP_CGROUP_H */ -- cgit v1.2.3