Contributors: 23
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Neil Brown |
259 |
33.51% |
5 |
6.25% |
| Matthew Wilcox |
88 |
11.38% |
16 |
20.00% |
| Kairui Song |
78 |
10.09% |
3 |
3.75% |
| JoonSoo Kim |
57 |
7.37% |
2 |
2.50% |
| Hugh Dickins |
56 |
7.24% |
5 |
6.25% |
| Linus Torvalds (pre-git) |
51 |
6.60% |
15 |
18.75% |
| Andrew Morton |
32 |
4.14% |
6 |
7.50% |
| Huang Ying |
27 |
3.49% |
4 |
5.00% |
| Con Kolivas |
25 |
3.23% |
1 |
1.25% |
| Christoph Hellwig |
22 |
2.85% |
5 |
6.25% |
| Linus Torvalds |
13 |
1.68% |
4 |
5.00% |
| MinChan Kim |
10 |
1.29% |
1 |
1.25% |
| Dan Streetman |
10 |
1.29% |
1 |
1.25% |
| Shaohua Li |
8 |
1.03% |
3 |
3.75% |
| Christoph Lameter |
6 |
0.78% |
1 |
1.25% |
| Kamezawa Hiroyuki |
6 |
0.78% |
1 |
1.25% |
| Andi Kleen |
6 |
0.78% |
1 |
1.25% |
| Randy Dunlap |
6 |
0.78% |
1 |
1.25% |
| Tim Chen |
4 |
0.52% |
1 |
1.25% |
| Domenico Cerasuolo |
3 |
0.39% |
1 |
1.25% |
| Tejun Heo |
3 |
0.39% |
1 |
1.25% |
| Michal Hocko |
2 |
0.26% |
1 |
1.25% |
| Greg Kroah-Hartman |
1 |
0.13% |
1 |
1.25% |
| Total |
773 |
|
80 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MM_SWAP_H
#define _MM_SWAP_H
struct mempolicy;
#ifdef CONFIG_SWAP
#include <linux/swapops.h> /* for swp_offset */
#include <linux/blk_types.h> /* for bio_end_io_t */
/* linux/mm/page_io.c */
int sio_pool_init(void);
struct swap_iocb;
void swap_read_folio(struct folio *folio, struct swap_iocb **plug);
void __swap_read_unplug(struct swap_iocb *plug);
static inline void swap_read_unplug(struct swap_iocb *plug)
{
if (unlikely(plug))
__swap_read_unplug(plug);
}
void swap_write_unplug(struct swap_iocb *sio);
int swap_writepage(struct page *page, struct writeback_control *wbc);
void __swap_writepage(struct folio *folio, struct writeback_control *wbc);
/* linux/mm/swap_state.c */
/* One swap address space for each 64M swap space */
#define SWAP_ADDRESS_SPACE_SHIFT 14
#define SWAP_ADDRESS_SPACE_PAGES (1 << SWAP_ADDRESS_SPACE_SHIFT)
#define SWAP_ADDRESS_SPACE_MASK (SWAP_ADDRESS_SPACE_PAGES - 1)
extern struct address_space *swapper_spaces[];
#define swap_address_space(entry) \
(&swapper_spaces[swp_type(entry)][swp_offset(entry) \
>> SWAP_ADDRESS_SPACE_SHIFT])
/*
* Return the swap device position of the swap entry.
*/
static inline loff_t swap_dev_pos(swp_entry_t entry)
{
return ((loff_t)swp_offset(entry)) << PAGE_SHIFT;
}
/*
* Return the swap cache index of the swap entry.
*/
static inline pgoff_t swap_cache_index(swp_entry_t entry)
{
BUILD_BUG_ON((SWP_OFFSET_MASK | SWAP_ADDRESS_SPACE_MASK) != SWP_OFFSET_MASK);
return swp_offset(entry) & SWAP_ADDRESS_SPACE_MASK;
}
void show_swap_cache_info(void);
bool add_to_swap(struct folio *folio);
void *get_shadow_from_swap_cache(swp_entry_t entry);
int add_to_swap_cache(struct folio *folio, swp_entry_t entry,
gfp_t gfp, void **shadowp);
void __delete_from_swap_cache(struct folio *folio,
swp_entry_t entry, void *shadow);
void delete_from_swap_cache(struct folio *folio);
void clear_shadow_from_swap_cache(int type, unsigned long begin,
unsigned long end);
void swapcache_clear(struct swap_info_struct *si, swp_entry_t entry);
struct folio *swap_cache_get_folio(swp_entry_t entry,
struct vm_area_struct *vma, unsigned long addr);
struct folio *filemap_get_incore_folio(struct address_space *mapping,
pgoff_t index);
struct folio *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
struct vm_area_struct *vma, unsigned long addr,
struct swap_iocb **plug);
struct folio *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_flags,
struct mempolicy *mpol, pgoff_t ilx, bool *new_page_allocated,
bool skip_if_exists);
struct folio *swap_cluster_readahead(swp_entry_t entry, gfp_t flag,
struct mempolicy *mpol, pgoff_t ilx);
struct page *swapin_readahead(swp_entry_t entry, gfp_t flag,
struct vm_fault *vmf);
static inline unsigned int folio_swap_flags(struct folio *folio)
{
return swp_swap_info(folio->swap)->flags;
}
#else /* CONFIG_SWAP */
struct swap_iocb;
static inline void swap_read_folio(struct folio *folio, struct swap_iocb **plug)
{
}
static inline void swap_write_unplug(struct swap_iocb *sio)
{
}
static inline struct address_space *swap_address_space(swp_entry_t entry)
{
return NULL;
}
static inline pgoff_t swap_cache_index(swp_entry_t entry)
{
return 0;
}
static inline void show_swap_cache_info(void)
{
}
static inline struct folio *swap_cluster_readahead(swp_entry_t entry,
gfp_t gfp_mask, struct mempolicy *mpol, pgoff_t ilx)
{
return NULL;
}
static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask,
struct vm_fault *vmf)
{
return NULL;
}
static inline int swap_writepage(struct page *p, struct writeback_control *wbc)
{
return 0;
}
static inline void swapcache_clear(struct swap_info_struct *si, swp_entry_t entry)
{
}
static inline struct folio *swap_cache_get_folio(swp_entry_t entry,
struct vm_area_struct *vma, unsigned long addr)
{
return NULL;
}
static inline
struct folio *filemap_get_incore_folio(struct address_space *mapping,
pgoff_t index)
{
return filemap_get_folio(mapping, index);
}
static inline bool add_to_swap(struct folio *folio)
{
return false;
}
static inline void *get_shadow_from_swap_cache(swp_entry_t entry)
{
return NULL;
}
static inline int add_to_swap_cache(struct folio *folio, swp_entry_t entry,
gfp_t gfp_mask, void **shadowp)
{
return -1;
}
static inline void __delete_from_swap_cache(struct folio *folio,
swp_entry_t entry, void *shadow)
{
}
static inline void delete_from_swap_cache(struct folio *folio)
{
}
static inline void clear_shadow_from_swap_cache(int type, unsigned long begin,
unsigned long end)
{
}
static inline unsigned int folio_swap_flags(struct folio *folio)
{
return 0;
}
#endif /* CONFIG_SWAP */
#endif /* _MM_SWAP_H */