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mm/swapfile.c: make code static

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This patch makes the following needlessly global code static:
 - swap_lock
 - nr_swapfiles
 - struct swap_list

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Adrian Bunk 2008-07-25 19:46:24 -07:00 committed by Linus Torvalds
parent 15f59adae0
commit 7c363b8c65
2 changed files with 3 additions and 6 deletions
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3
include/linux/swap.h
View File

@ -237,7 +237,6 @@ extern struct page *swapin_readahead(swp_entry_t, gfp_t,
/* linux/mm/swapfile.c */
extern long total_swap_pages;
extern unsigned int nr_swapfiles;
extern void si_swapinfo(struct sysinfo *);
extern swp_entry_t get_swap_page(void);
extern swp_entry_t get_swap_page_of_type(int);
@ -254,8 +253,6 @@ extern int can_share_swap_page(struct page *);
extern int remove_exclusive_swap_page(struct page *);
struct backing_dev_info;
extern spinlock_t swap_lock;
/* linux/mm/thrash.c */
extern struct mm_struct * swap_token_mm;
extern void grab_swap_token(void);

6
mm/swapfile.c
View File

@ -33,8 +33,8 @@
#include <asm/tlbflush.h>
#include <linux/swapops.h>
DEFINE_SPINLOCK(swap_lock);
unsigned int nr_swapfiles;
static DEFINE_SPINLOCK(swap_lock);
static unsigned int nr_swapfiles;
long total_swap_pages;
static int swap_overflow;
static int least_priority;
@ -44,7 +44,7 @@ static const char Unused_file[] = "Unused swap file entry ";
static const char Bad_offset[] = "Bad swap offset entry ";
static const char Unused_offset[] = "Unused swap offset entry ";
struct swap_list_t swap_list = {-1, -1};
static struct swap_list_t swap_list = {-1, -1};
static struct swap_info_struct swap_info[MAX_SWAPFILES];