swapfile.c (915bae9ebe41e52d71ad8b06d50e4ab26189f964) swapfile.c (3aef83e0ef1ffb8ea3bea97be46821a45c952173)
1/*
2 * linux/mm/swapfile.c
3 *
4 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
5 * Swap reorganised 29.12.95, Stephen Tweedie
6 */
7
8#include <linux/mm.h>

--- 931 unchanged lines hidden (view full) ---

940 if (lh == &sis->extent_list)
941 lh = lh->next;
942 se = list_entry(lh, struct swap_extent, list);
943 sis->curr_swap_extent = se;
944 BUG_ON(se == start_se); /* It *must* be present */
945 }
946}
947
1/*
2 * linux/mm/swapfile.c
3 *
4 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
5 * Swap reorganised 29.12.95, Stephen Tweedie
6 */
7
8#include <linux/mm.h>

--- 931 unchanged lines hidden (view full) ---

940 if (lh == &sis->extent_list)
941 lh = lh->next;
942 se = list_entry(lh, struct swap_extent, list);
943 sis->curr_swap_extent = se;
944 BUG_ON(se == start_se); /* It *must* be present */
945 }
946}
947
948#ifdef CONFIG_SOFTWARE_SUSPEND
948/*
949/*
950 * Get the (PAGE_SIZE) block corresponding to given offset on the swapdev
951 * corresponding to given index in swap_info (swap type).
952 */
953sector_t swapdev_block(int swap_type, pgoff_t offset)
954{
955 struct swap_info_struct *sis;
956
957 if (swap_type >= nr_swapfiles)
958 return 0;
959
960 sis = swap_info + swap_type;
961 return (sis->flags & SWP_WRITEOK) ? map_swap_page(sis, offset) : 0;
962}
963#endif /* CONFIG_SOFTWARE_SUSPEND */
964
965/*
949 * Free all of a swapdev's extent information
950 */
951static void destroy_swap_extents(struct swap_info_struct *sis)
952{
953 while (!list_empty(&sis->extent_list)) {
954 struct swap_extent *se;
955
956 se = list_entry(sis->extent_list.next,

--- 822 unchanged lines hidden --- 		966 * Free all of a swapdev's extent information
967 */
968static void destroy_swap_extents(struct swap_info_struct *sis)
969{
970 while (!list_empty(&sis->extent_list)) {
971 struct swap_extent *se;
972
973 se = list_entry(sis->extent_list.next,

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