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mm/swapfile.c: make code static
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>
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@ -237,7 +237,6 @@ extern struct page *swapin_readahead(swp_entry_t, gfp_t,
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/* linux/mm/swapfile.c */
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extern long total_swap_pages;
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extern unsigned int nr_swapfiles;
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extern void si_swapinfo(struct sysinfo *);
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extern swp_entry_t get_swap_page(void);
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extern swp_entry_t get_swap_page_of_type(int);
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@ -254,8 +253,6 @@ extern int can_share_swap_page(struct page *);
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extern int remove_exclusive_swap_page(struct page *);
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struct backing_dev_info;
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extern spinlock_t swap_lock;
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/* linux/mm/thrash.c */
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extern struct mm_struct * swap_token_mm;
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extern void grab_swap_token(void);
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@ -33,8 +33,8 @@
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#include <asm/tlbflush.h>
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#include <linux/swapops.h>
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DEFINE_SPINLOCK(swap_lock);
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unsigned int nr_swapfiles;
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static DEFINE_SPINLOCK(swap_lock);
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static unsigned int nr_swapfiles;
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long total_swap_pages;
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static int swap_overflow;
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static int least_priority;
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@ -44,7 +44,7 @@ static const char Unused_file[] = "Unused swap file entry ";
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static const char Bad_offset[] = "Bad swap offset entry ";
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static const char Unused_offset[] = "Unused swap offset entry ";
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struct swap_list_t swap_list = {-1, -1};
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static struct swap_list_t swap_list = {-1, -1};
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static struct swap_info_struct swap_info[MAX_SWAPFILES];
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