diff options
Diffstat (limited to 'include/linux/swap.h')
| -rw-r--r-- | include/linux/swap.h | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h index 2343f999e6e..3c9ff004815 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -7,6 +7,7 @@ #include <linux/mmzone.h> #include <linux/list.h> #include <linux/sched.h> + #include <asm/atomic.h> #include <asm/page.h> @@ -106,6 +107,8 @@ enum { SWP_USED = (1 << 0), /* is slot in swap_info[] used? */ SWP_WRITEOK = (1 << 1), /* ok to write to this swap? */ SWP_ACTIVE = (SWP_USED | SWP_WRITEOK), + /* add others here before... */ + SWP_SCANNING = (1 << 8), /* refcount in scan_swap_map */ }; #define SWAP_CLUSTER_MAX 32 @@ -115,16 +118,13 @@ enum { /* * The in-memory structure used to track swap areas. - * extent_list.prev points at the lowest-index extent. That list is - * sorted. */ struct swap_info_struct { unsigned int flags; - spinlock_t sdev_lock; + int prio; /* swap priority */ struct file *swap_file; struct block_device *bdev; struct list_head extent_list; - int nr_extents; struct swap_extent *curr_swap_extent; unsigned old_block_size; unsigned short * swap_map; @@ -132,10 +132,9 @@ struct swap_info_struct { unsigned int highest_bit; unsigned int cluster_next; unsigned int cluster_nr; - int prio; /* swap priority */ - int pages; - unsigned long max; - unsigned long inuse_pages; + unsigned int pages; + unsigned int max; + unsigned int inuse_pages; int next; /* next entry on swap list */ }; @@ -148,7 +147,7 @@ struct swap_list_t { #define vm_swap_full() (nr_swap_pages*2 < total_swap_pages) /* linux/mm/oom_kill.c */ -extern void out_of_memory(unsigned int __nocast gfp_mask); +extern void out_of_memory(unsigned int __nocast gfp_mask, int order); /* linux/mm/memory.c */ extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct *); @@ -221,13 +220,7 @@ extern int can_share_swap_page(struct page *); extern int remove_exclusive_swap_page(struct page *); struct backing_dev_info; -extern struct swap_list_t swap_list; -extern spinlock_t swaplock; - -#define swap_list_lock() spin_lock(&swaplock) -#define swap_list_unlock() spin_unlock(&swaplock) -#define swap_device_lock(p) spin_lock(&p->sdev_lock) -#define swap_device_unlock(p) spin_unlock(&p->sdev_lock) +extern spinlock_t swap_lock; /* linux/mm/thrash.c */ extern struct mm_struct * swap_token_mm; @@ -253,6 +246,8 @@ static inline void put_swap_token(struct mm_struct *mm) #define si_swapinfo(val) \ do { (val)->freeswap = (val)->totalswap = 0; } while (0) +/* only sparc can not include linux/pagemap.h in this file + * so leave page_cache_release and release_pages undeclared... */ #define free_page_and_swap_cache(page) \ page_cache_release(page) #define free_pages_and_swap_cache(pages, nr) \ |