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1 | #ifndef _LINUX_SWAP_H |
2 | #define _LINUX_SWAP_H |
3 | |
4 | #include <linux/spinlock.h> |
5 | #include <linux/linkage.h> |
6 | #include <linux/mmzone.h> |
7 | #include <linux/list.h> |
8 | #include <linux/memcontrol.h> |
9 | #include <linux/sched.h> |
10 | #include <linux/node.h> |
11 | #include <linux/fs.h> |
12 | #include <linux/atomic.h> |
13 | #include <linux/page-flags.h> |
14 | #include <asm/page.h> |
15 | |
16 | struct notifier_block; |
17 | |
18 | struct bio; |
19 | |
20 | #define SWAP_FLAG_PREFER 0x8000 /* set if swap priority specified */ |
21 | #define SWAP_FLAG_PRIO_MASK 0x7fff |
22 | #define SWAP_FLAG_PRIO_SHIFT 0 |
23 | #define SWAP_FLAG_DISCARD 0x10000 /* enable discard for swap */ |
24 | #define SWAP_FLAG_DISCARD_ONCE 0x20000 /* discard swap area at swapon-time */ |
25 | #define SWAP_FLAG_DISCARD_PAGES 0x40000 /* discard page-clusters after use */ |
26 | |
27 | #define SWAP_FLAGS_VALID (SWAP_FLAG_PRIO_MASK | SWAP_FLAG_PREFER | \ |
28 | SWAP_FLAG_DISCARD | SWAP_FLAG_DISCARD_ONCE | \ |
29 | SWAP_FLAG_DISCARD_PAGES) |
30 | |
31 | static inline int current_is_kswapd(void) |
32 | { |
33 | return current->flags & PF_KSWAPD; |
34 | } |
35 | |
36 | /* |
37 | * MAX_SWAPFILES defines the maximum number of swaptypes: things which can |
38 | * be swapped to. The swap type and the offset into that swap type are |
39 | * encoded into pte's and into pgoff_t's in the swapcache. Using five bits |
40 | * for the type means that the maximum number of swapcache pages is 27 bits |
41 | * on 32-bit-pgoff_t architectures. And that assumes that the architecture packs |
42 | * the type/offset into the pte as 5/27 as well. |
43 | */ |
44 | #define MAX_SWAPFILES_SHIFT 5 |
45 | |
46 | /* |
47 | * Use some of the swap files numbers for other purposes. This |
48 | * is a convenient way to hook into the VM to trigger special |
49 | * actions on faults. |
50 | */ |
51 | |
52 | /* |
53 | * NUMA node memory migration support |
54 | */ |
55 | #ifdef CONFIG_MIGRATION |
56 | #define SWP_MIGRATION_NUM 2 |
57 | #define SWP_MIGRATION_READ (MAX_SWAPFILES + SWP_HWPOISON_NUM) |
58 | #define SWP_MIGRATION_WRITE (MAX_SWAPFILES + SWP_HWPOISON_NUM + 1) |
59 | #else |
60 | #define SWP_MIGRATION_NUM 0 |
61 | #endif |
62 | |
63 | /* |
64 | * Handling of hardware poisoned pages with memory corruption. |
65 | */ |
66 | #ifdef CONFIG_MEMORY_FAILURE |
67 | #define SWP_HWPOISON_NUM 1 |
68 | #define SWP_HWPOISON MAX_SWAPFILES |
69 | #else |
70 | #define SWP_HWPOISON_NUM 0 |
71 | #endif |
72 | |
73 | #define MAX_SWAPFILES \ |
74 | ((1 << MAX_SWAPFILES_SHIFT) - SWP_MIGRATION_NUM - SWP_HWPOISON_NUM) |
75 | |
76 | /* |
77 | * Magic header for a swap area. The first part of the union is |
78 | * what the swap magic looks like for the old (limited to 128MB) |
79 | * swap area format, the second part of the union adds - in the |
80 | * old reserved area - some extra information. Note that the first |
81 | * kilobyte is reserved for boot loader or disk label stuff... |
82 | * |
83 | * Having the magic at the end of the PAGE_SIZE makes detecting swap |
84 | * areas somewhat tricky on machines that support multiple page sizes. |
85 | * For 2.5 we'll probably want to move the magic to just beyond the |
86 | * bootbits... |
87 | */ |
88 | union swap_header { |
89 | struct { |
90 | char reserved[PAGE_SIZE - 10]; |
91 | char magic[10]; /* SWAP-SPACE or SWAPSPACE2 */ |
92 | } magic; |
93 | struct { |
94 | char bootbits[1024]; /* Space for disklabel etc. */ |
95 | __u32 version; |
96 | __u32 last_page; |
97 | __u32 nr_badpages; |
98 | unsigned char sws_uuid[16]; |
99 | unsigned char sws_volume[16]; |
100 | __u32 padding[117]; |
101 | __u32 badpages[1]; |
102 | } info; |
103 | }; |
104 | |
105 | /* A swap entry has to fit into a "unsigned long", as |
106 | * the entry is hidden in the "index" field of the |
107 | * swapper address space. |
108 | */ |
109 | typedef struct { |
110 | unsigned long val; |
111 | } swp_entry_t; |
112 | |
113 | /* |
114 | * current->reclaim_state points to one of these when a task is running |
115 | * memory reclaim |
116 | */ |
117 | struct reclaim_state { |
118 | unsigned long reclaimed_slab; |
119 | }; |
120 | |
121 | #ifdef __KERNEL__ |
122 | |
123 | struct address_space; |
124 | struct sysinfo; |
125 | struct writeback_control; |
126 | struct zone; |
127 | |
128 | /* |
129 | * A swap extent maps a range of a swapfile's PAGE_SIZE pages onto a range of |
130 | * disk blocks. A list of swap extents maps the entire swapfile. (Where the |
131 | * term `swapfile' refers to either a blockdevice or an IS_REG file. Apart |
132 | * from setup, they're handled identically. |
133 | * |
134 | * We always assume that blocks are of size PAGE_SIZE. |
135 | */ |
136 | struct swap_extent { |
137 | struct list_head list; |
138 | pgoff_t start_page; |
139 | pgoff_t nr_pages; |
140 | sector_t start_block; |
141 | }; |
142 | |
143 | /* |
144 | * Max bad pages in the new format.. |
145 | */ |
146 | #define __swapoffset(x) ((unsigned long)&((union swap_header *)0)->x) |
147 | #define MAX_SWAP_BADPAGES \ |
148 | ((__swapoffset(magic.magic) - __swapoffset(info.badpages)) / sizeof(int)) |
149 | |
150 | enum { |
151 | SWP_USED = (1 << 0), /* is slot in swap_info[] used? */ |
152 | SWP_WRITEOK = (1 << 1), /* ok to write to this swap? */ |
153 | SWP_DISCARDABLE = (1 << 2), /* blkdev support discard */ |
154 | SWP_DISCARDING = (1 << 3), /* now discarding a free cluster */ |
155 | SWP_SOLIDSTATE = (1 << 4), /* blkdev seeks are cheap */ |
156 | SWP_CONTINUED = (1 << 5), /* swap_map has count continuation */ |
157 | SWP_BLKDEV = (1 << 6), /* its a block device */ |
158 | SWP_FILE = (1 << 7), /* set after swap_activate success */ |
159 | SWP_AREA_DISCARD = (1 << 8), /* single-time swap area discards */ |
160 | SWP_PAGE_DISCARD = (1 << 9), /* freed swap page-cluster discards */ |
161 | /* add others here before... */ |
162 | SWP_SCANNING = (1 << 10), /* refcount in scan_swap_map */ |
163 | }; |
164 | |
165 | #define SWAP_CLUSTER_MAX 32UL |
166 | #define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX |
167 | |
168 | /* |
169 | * Ratio between the present memory in the zone and the "gap" that |
170 | * we're allowing kswapd to shrink in addition to the per-zone high |
171 | * wmark, even for zones that already have the high wmark satisfied, |
172 | * in order to provide better per-zone lru behavior. We are ok to |
173 | * spend not more than 1% of the memory for this zone balancing "gap". |
174 | */ |
175 | #define KSWAPD_ZONE_BALANCE_GAP_RATIO 100 |
176 | |
177 | #define SWAP_MAP_MAX 0x3e /* Max duplication count, in first swap_map */ |
178 | #define SWAP_MAP_BAD 0x3f /* Note pageblock is bad, in first swap_map */ |
179 | #define SWAP_HAS_CACHE 0x40 /* Flag page is cached, in first swap_map */ |
180 | #define SWAP_CONT_MAX 0x7f /* Max count, in each swap_map continuation */ |
181 | #define COUNT_CONTINUED 0x80 /* See swap_map continuation for full count */ |
182 | #define SWAP_MAP_SHMEM 0xbf /* Owned by shmem/tmpfs, in first swap_map */ |
183 | |
184 | /* |
185 | * We use this to track usage of a cluster. A cluster is a block of swap disk |
186 | * space with SWAPFILE_CLUSTER pages long and naturally aligns in disk. All |
187 | * free clusters are organized into a list. We fetch an entry from the list to |
188 | * get a free cluster. |
189 | * |
190 | * The data field stores next cluster if the cluster is free or cluster usage |
191 | * counter otherwise. The flags field determines if a cluster is free. This is |
192 | * protected by swap_info_struct.lock. |
193 | */ |
194 | struct swap_cluster_info { |
195 | unsigned int data:24; |
196 | unsigned int flags:8; |
197 | }; |
198 | #define CLUSTER_FLAG_FREE 1 /* This cluster is free */ |
199 | #define CLUSTER_FLAG_NEXT_NULL 2 /* This cluster has no next cluster */ |
200 | |
201 | /* |
202 | * We assign a cluster to each CPU, so each CPU can allocate swap entry from |
203 | * its own cluster and swapout sequentially. The purpose is to optimize swapout |
204 | * throughput. |
205 | */ |
206 | struct percpu_cluster { |
207 | struct swap_cluster_info index; /* Current cluster index */ |
208 | unsigned int next; /* Likely next allocation offset */ |
209 | }; |
210 | |
211 | /* |
212 | * The in-memory structure used to track swap areas. |
213 | */ |
214 | struct swap_info_struct { |
215 | unsigned long flags; /* SWP_USED etc: see above */ |
216 | signed short prio; /* swap priority of this type */ |
217 | signed char type; /* strange name for an index */ |
218 | signed char next; /* next type on the swap list */ |
219 | unsigned int max; /* extent of the swap_map */ |
220 | unsigned char *swap_map; /* vmalloc'ed array of usage counts */ |
221 | struct swap_cluster_info *cluster_info; /* cluster info. Only for SSD */ |
222 | struct swap_cluster_info free_cluster_head; /* free cluster list head */ |
223 | struct swap_cluster_info free_cluster_tail; /* free cluster list tail */ |
224 | unsigned int lowest_bit; /* index of first free in swap_map */ |
225 | unsigned int highest_bit; /* index of last free in swap_map */ |
226 | unsigned int pages; /* total of usable pages of swap */ |
227 | unsigned int inuse_pages; /* number of those currently in use */ |
228 | unsigned int cluster_next; /* likely index for next allocation */ |
229 | unsigned int cluster_nr; /* countdown to next cluster search */ |
230 | struct percpu_cluster __percpu *percpu_cluster; /* per cpu's swap location */ |
231 | struct swap_extent *curr_swap_extent; |
232 | struct swap_extent first_swap_extent; |
233 | struct block_device *bdev; /* swap device or bdev of swap file */ |
234 | struct file *swap_file; /* seldom referenced */ |
235 | unsigned int old_block_size; /* seldom referenced */ |
236 | #ifdef CONFIG_FRONTSWAP |
237 | unsigned long *frontswap_map; /* frontswap in-use, one bit per page */ |
238 | atomic_t frontswap_pages; /* frontswap pages in-use counter */ |
239 | #endif |
240 | spinlock_t lock; /* |
241 | * protect map scan related fields like |
242 | * swap_map, lowest_bit, highest_bit, |
243 | * inuse_pages, cluster_next, |
244 | * cluster_nr, lowest_alloc, |
245 | * highest_alloc, free/discard cluster |
246 | * list. other fields are only changed |
247 | * at swapon/swapoff, so are protected |
248 | * by swap_lock. changing flags need |
249 | * hold this lock and swap_lock. If |
250 | * both locks need hold, hold swap_lock |
251 | * first. |
252 | */ |
253 | struct work_struct discard_work; /* discard worker */ |
254 | struct swap_cluster_info discard_cluster_head; /* list head of discard clusters */ |
255 | struct swap_cluster_info discard_cluster_tail; /* list tail of discard clusters */ |
256 | }; |
257 | |
258 | struct swap_list_t { |
259 | int head; /* head of priority-ordered swapfile list */ |
260 | int next; /* swapfile to be used next */ |
261 | }; |
262 | |
263 | /* linux/mm/page_alloc.c */ |
264 | extern unsigned long totalram_pages; |
265 | extern unsigned long totalreserve_pages; |
266 | extern unsigned long dirty_balance_reserve; |
267 | extern unsigned long nr_free_buffer_pages(void); |
268 | extern unsigned long nr_free_pagecache_pages(void); |
269 | |
270 | /* Definition of global_page_state not available yet */ |
271 | #define nr_free_pages() global_page_state(NR_FREE_PAGES) |
272 | |
273 | |
274 | /* linux/mm/swap.c */ |
275 | extern void __lru_cache_add(struct page *); |
276 | extern void lru_cache_add(struct page *); |
277 | extern void lru_add_page_tail(struct page *page, struct page *page_tail, |
278 | struct lruvec *lruvec, struct list_head *head); |
279 | extern void activate_page(struct page *); |
280 | extern void mark_page_accessed(struct page *); |
281 | extern void lru_add_drain(void); |
282 | extern void lru_add_drain_cpu(int cpu); |
283 | extern void lru_add_drain_all(void); |
284 | extern void rotate_reclaimable_page(struct page *page); |
285 | extern void deactivate_page(struct page *page); |
286 | extern void swap_setup(void); |
287 | |
288 | extern void add_page_to_unevictable_list(struct page *page); |
289 | |
290 | /** |
291 | * lru_cache_add: add a page to the page lists |
292 | * @page: the page to add |
293 | */ |
294 | static inline void lru_cache_add_anon(struct page *page) |
295 | { |
296 | ClearPageActive(page); |
297 | __lru_cache_add(page); |
298 | } |
299 | |
300 | static inline void lru_cache_add_file(struct page *page) |
301 | { |
302 | ClearPageActive(page); |
303 | __lru_cache_add(page); |
304 | } |
305 | |
306 | /* linux/mm/vmscan.c */ |
307 | extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order, |
308 | gfp_t gfp_mask, nodemask_t *mask); |
309 | extern int __isolate_lru_page(struct page *page, isolate_mode_t mode); |
310 | extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem, |
311 | gfp_t gfp_mask, bool noswap); |
312 | extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, |
313 | gfp_t gfp_mask, bool noswap, |
314 | struct zone *zone, |
315 | unsigned long *nr_scanned); |
316 | extern unsigned long shrink_all_memory(unsigned long nr_pages); |
317 | extern int vm_swappiness; |
318 | extern int remove_mapping(struct address_space *mapping, struct page *page); |
319 | extern unsigned long vm_total_pages; |
320 | |
321 | #ifdef CONFIG_NUMA |
322 | extern int zone_reclaim_mode; |
323 | extern int sysctl_min_unmapped_ratio; |
324 | extern int sysctl_min_slab_ratio; |
325 | extern int zone_reclaim(struct zone *, gfp_t, unsigned int); |
326 | #else |
327 | #define zone_reclaim_mode 0 |
328 | static inline int zone_reclaim(struct zone *z, gfp_t mask, unsigned int order) |
329 | { |
330 | return 0; |
331 | } |
332 | #endif |
333 | |
334 | extern int page_evictable(struct page *page); |
335 | extern void check_move_unevictable_pages(struct page **, int nr_pages); |
336 | |
337 | extern unsigned long scan_unevictable_pages; |
338 | extern int scan_unevictable_handler(struct ctl_table *, int, |
339 | void __user *, size_t *, loff_t *); |
340 | #ifdef CONFIG_NUMA |
341 | extern int scan_unevictable_register_node(struct node *node); |
342 | extern void scan_unevictable_unregister_node(struct node *node); |
343 | #else |
344 | static inline int scan_unevictable_register_node(struct node *node) |
345 | { |
346 | return 0; |
347 | } |
348 | static inline void scan_unevictable_unregister_node(struct node *node) |
349 | { |
350 | } |
351 | #endif |
352 | |
353 | extern int kswapd_run(int nid); |
354 | extern void kswapd_stop(int nid); |
355 | #ifdef CONFIG_MEMCG |
356 | extern int mem_cgroup_swappiness(struct mem_cgroup *mem); |
357 | #else |
358 | static inline int mem_cgroup_swappiness(struct mem_cgroup *mem) |
359 | { |
360 | return vm_swappiness; |
361 | } |
362 | #endif |
363 | #ifdef CONFIG_MEMCG_SWAP |
364 | extern void mem_cgroup_uncharge_swap(swp_entry_t ent); |
365 | #else |
366 | static inline void mem_cgroup_uncharge_swap(swp_entry_t ent) |
367 | { |
368 | } |
369 | #endif |
370 | #ifdef CONFIG_SWAP |
371 | /* linux/mm/page_io.c */ |
372 | extern int swap_readpage(struct page *); |
373 | extern int swap_writepage(struct page *page, struct writeback_control *wbc); |
374 | extern void end_swap_bio_write(struct bio *bio, int err); |
375 | extern int __swap_writepage(struct page *page, struct writeback_control *wbc, |
376 | void (*end_write_func)(struct bio *, int)); |
377 | extern int swap_set_page_dirty(struct page *page); |
378 | extern void end_swap_bio_read(struct bio *bio, int err); |
379 | |
380 | int add_swap_extent(struct swap_info_struct *sis, unsigned long start_page, |
381 | unsigned long nr_pages, sector_t start_block); |
382 | int generic_swapfile_activate(struct swap_info_struct *, struct file *, |
383 | sector_t *); |
384 | |
385 | /* linux/mm/swap_state.c */ |
386 | extern struct address_space swapper_spaces[]; |
387 | #define swap_address_space(entry) (&swapper_spaces[swp_type(entry)]) |
388 | extern unsigned long total_swapcache_pages(void); |
389 | extern void show_swap_cache_info(void); |
390 | extern int add_to_swap(struct page *, struct list_head *list); |
391 | extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t); |
392 | extern int __add_to_swap_cache(struct page *page, swp_entry_t entry); |
393 | extern void __delete_from_swap_cache(struct page *); |
394 | extern void delete_from_swap_cache(struct page *); |
395 | extern void free_page_and_swap_cache(struct page *); |
396 | extern void free_pages_and_swap_cache(struct page **, int); |
397 | extern struct page *lookup_swap_cache(swp_entry_t); |
398 | extern struct page *read_swap_cache_async(swp_entry_t, gfp_t, |
399 | struct vm_area_struct *vma, unsigned long addr); |
400 | extern struct page *swapin_readahead(swp_entry_t, gfp_t, |
401 | struct vm_area_struct *vma, unsigned long addr); |
402 | |
403 | /* linux/mm/swapfile.c */ |
404 | extern atomic_long_t nr_swap_pages; |
405 | extern long total_swap_pages; |
406 | |
407 | /* Swap 50% full? Release swapcache more aggressively.. */ |
408 | static inline bool vm_swap_full(void) |
409 | { |
410 | return atomic_long_read(&nr_swap_pages) * 2 < total_swap_pages; |
411 | } |
412 | |
413 | static inline long get_nr_swap_pages(void) |
414 | { |
415 | return atomic_long_read(&nr_swap_pages); |
416 | } |
417 | |
418 | extern void si_swapinfo(struct sysinfo *); |
419 | extern swp_entry_t get_swap_page(void); |
420 | extern swp_entry_t get_swap_page_of_type(int); |
421 | extern int add_swap_count_continuation(swp_entry_t, gfp_t); |
422 | extern void swap_shmem_alloc(swp_entry_t); |
423 | extern int swap_duplicate(swp_entry_t); |
424 | extern int swapcache_prepare(swp_entry_t); |
425 | extern void swap_free(swp_entry_t); |
426 | extern void swapcache_free(swp_entry_t, struct page *page); |
427 | extern int free_swap_and_cache(swp_entry_t); |
428 | extern int swap_type_of(dev_t, sector_t, struct block_device **); |
429 | extern unsigned int count_swap_pages(int, int); |
430 | extern sector_t map_swap_page(struct page *, struct block_device **); |
431 | extern sector_t swapdev_block(int, pgoff_t); |
432 | extern int page_swapcount(struct page *); |
433 | extern struct swap_info_struct *page_swap_info(struct page *); |
434 | extern int reuse_swap_page(struct page *); |
435 | extern int try_to_free_swap(struct page *); |
436 | struct backing_dev_info; |
437 | |
438 | #ifdef CONFIG_MEMCG |
439 | extern void |
440 | mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout); |
441 | #else |
442 | static inline void |
443 | mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout) |
444 | { |
445 | } |
446 | #endif |
447 | |
448 | #else /* CONFIG_SWAP */ |
449 | |
450 | #define swap_address_space(entry) (NULL) |
451 | #define get_nr_swap_pages() 0L |
452 | #define total_swap_pages 0L |
453 | #define total_swapcache_pages() 0UL |
454 | #define vm_swap_full() 0 |
455 | |
456 | #define si_swapinfo(val) \ |
457 | do { (val)->freeswap = (val)->totalswap = 0; } while (0) |
458 | /* only sparc can not include linux/pagemap.h in this file |
459 | * so leave page_cache_release and release_pages undeclared... */ |
460 | #define free_page_and_swap_cache(page) \ |
461 | page_cache_release(page) |
462 | #define free_pages_and_swap_cache(pages, nr) \ |
463 | release_pages((pages), (nr), 0); |
464 | |
465 | static inline void show_swap_cache_info(void) |
466 | { |
467 | } |
468 | |
469 | #define free_swap_and_cache(swp) is_migration_entry(swp) |
470 | #define swapcache_prepare(swp) is_migration_entry(swp) |
471 | |
472 | static inline int add_swap_count_continuation(swp_entry_t swp, gfp_t gfp_mask) |
473 | { |
474 | return 0; |
475 | } |
476 | |
477 | static inline void swap_shmem_alloc(swp_entry_t swp) |
478 | { |
479 | } |
480 | |
481 | static inline int swap_duplicate(swp_entry_t swp) |
482 | { |
483 | return 0; |
484 | } |
485 | |
486 | static inline void swap_free(swp_entry_t swp) |
487 | { |
488 | } |
489 | |
490 | static inline void swapcache_free(swp_entry_t swp, struct page *page) |
491 | { |
492 | } |
493 | |
494 | static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask, |
495 | struct vm_area_struct *vma, unsigned long addr) |
496 | { |
497 | return NULL; |
498 | } |
499 | |
500 | static inline int swap_writepage(struct page *p, struct writeback_control *wbc) |
501 | { |
502 | return 0; |
503 | } |
504 | |
505 | static inline struct page *lookup_swap_cache(swp_entry_t swp) |
506 | { |
507 | return NULL; |
508 | } |
509 | |
510 | static inline int add_to_swap(struct page *page, struct list_head *list) |
511 | { |
512 | return 0; |
513 | } |
514 | |
515 | static inline int add_to_swap_cache(struct page *page, swp_entry_t entry, |
516 | gfp_t gfp_mask) |
517 | { |
518 | return -1; |
519 | } |
520 | |
521 | static inline void __delete_from_swap_cache(struct page *page) |
522 | { |
523 | } |
524 | |
525 | static inline void delete_from_swap_cache(struct page *page) |
526 | { |
527 | } |
528 | |
529 | static inline int page_swapcount(struct page *page) |
530 | { |
531 | return 0; |
532 | } |
533 | |
534 | #define reuse_swap_page(page) (page_mapcount(page) == 1) |
535 | |
536 | static inline int try_to_free_swap(struct page *page) |
537 | { |
538 | return 0; |
539 | } |
540 | |
541 | static inline swp_entry_t get_swap_page(void) |
542 | { |
543 | swp_entry_t entry; |
544 | entry.val = 0; |
545 | return entry; |
546 | } |
547 | |
548 | static inline void |
549 | mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent) |
550 | { |
551 | } |
552 | |
553 | #endif /* CONFIG_SWAP */ |
554 | #endif /* __KERNEL__*/ |
555 | #endif /* _LINUX_SWAP_H */ |
556 |
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jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9