swap_lock and swap_active_head are only used in swapfile.c, so mark them static. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- include/linux/swapfile.h | 2 -- mm/swapfile.c | 4 ++-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/include/linux/swapfile.h b/include/linux/swapfile.h index 809cd01ef2c57..54078542134c1 100644 --- a/include/linux/swapfile.h +++ b/include/linux/swapfile.h @@ -6,8 +6,6 @@ * these were static in swapfile.c but frontswap.c needs them and we don't * want to expose them to the dozens of source files that include swap.h */ -extern spinlock_t swap_lock; -extern struct plist_head swap_active_head; extern struct swap_info_struct *swap_info[]; extern unsigned long generic_max_swapfile_size(void); extern unsigned long max_swapfile_size(void); diff --git a/mm/swapfile.c b/mm/swapfile.c index 82342c77791bb..bf0df7aa7158f 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -49,7 +49,7 @@ static bool swap_count_continued(struct swap_info_struct *, pgoff_t, unsigned char); static void free_swap_count_continuations(struct swap_info_struct *); -DEFINE_SPINLOCK(swap_lock); +static DEFINE_SPINLOCK(swap_lock); static unsigned int nr_swapfiles; atomic_long_t nr_swap_pages; /* @@ -71,7 +71,7 @@ static const char Unused_offset[] = "Unused swap offset entry "; * all active swap_info_structs * protected with swap_lock, and ordered by priority. */ -PLIST_HEAD(swap_active_head); +static PLIST_HEAD(swap_active_head); /* * all available (active, not full) swap_info_structs -- 2.30.2
