Commit 6f2cb2f1 authored by Vladimir Davydov's avatar Vladimir Davydov Committed by Linus Torvalds
Browse files

swap.h: move memcg related stuff to the end of the file 



The following patches will add more functions to the memcg section of
include/linux/swap.h.  Some of them will need values defined below the
current location of the section.  So let's move the section to the end of
the file.  No functional changes intended.

Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent eb01aaab

include/linux/swap.h

+38 −32
Original line number Diff line number Diff line
@@ -350,39 +350,7 @@ extern void check_move_unevictable_pages(struct page **, int nr_pages); 


extern int kswapd_run(int nid);

extern void kswapd_stop(int nid);

#ifdef CONFIG_MEMCG

static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)

{

	/* root ? */

	if (mem_cgroup_disabled() || !memcg->css.parent)

		return vm_swappiness;



	return memcg->swappiness;

}



#else

static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)

{

	return vm_swappiness;

}

#endif

#ifdef CONFIG_MEMCG_SWAP

extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);

extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);

extern void mem_cgroup_uncharge_swap(swp_entry_t entry);

#else

static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)

{

}

static inline int mem_cgroup_try_charge_swap(struct page *page,

					     swp_entry_t entry)

{

	return 0;

}

static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)

{

}

#endif

#ifdef CONFIG_SWAP

/* linux/mm/page_io.c */

extern int swap_readpage(struct page *);
@@ -561,5 +529,43 @@ static inline swp_entry_t get_swap_page(void) 
}



#endif /* CONFIG_SWAP */



#ifdef CONFIG_MEMCG

static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)

{

	/* root ? */

	if (mem_cgroup_disabled() || !memcg->css.parent)

		return vm_swappiness;



	return memcg->swappiness;

}



#else

static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)

{

	return vm_swappiness;

}

#endif



#ifdef CONFIG_MEMCG_SWAP

extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);

extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);

extern void mem_cgroup_uncharge_swap(swp_entry_t entry);

#else

static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)

{

}



static inline int mem_cgroup_try_charge_swap(struct page *page,

					     swp_entry_t entry)

{

	return 0;

}



static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)

{

}

#endif



#endif /* __KERNEL__*/

#endif /* _LINUX_SWAP_H */

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