mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 04:31:19 +00:00
5db53f3e80
This is a new flash file system. See Documentation/filesystems/logfs.txt Signed-off-by: Joern Engel <joern@logfs.org>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
extern struct btree_geo btree_geo128;
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struct btree_head128 { struct btree_head h; };
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static inline void btree_init_mempool128(struct btree_head128 *head,
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mempool_t *mempool)
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{
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btree_init_mempool(&head->h, mempool);
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}
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static inline int btree_init128(struct btree_head128 *head)
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{
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return btree_init(&head->h);
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}
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static inline void btree_destroy128(struct btree_head128 *head)
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{
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btree_destroy(&head->h);
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}
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static inline void *btree_lookup128(struct btree_head128 *head, u64 k1, u64 k2)
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{
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u64 key[2] = {k1, k2};
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return btree_lookup(&head->h, &btree_geo128, (unsigned long *)&key);
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}
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static inline void *btree_get_prev128(struct btree_head128 *head,
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u64 *k1, u64 *k2)
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{
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u64 key[2] = {*k1, *k2};
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void *val;
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val = btree_get_prev(&head->h, &btree_geo128,
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(unsigned long *)&key);
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*k1 = key[0];
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*k2 = key[1];
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return val;
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}
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static inline int btree_insert128(struct btree_head128 *head, u64 k1, u64 k2,
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void *val, gfp_t gfp)
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{
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u64 key[2] = {k1, k2};
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return btree_insert(&head->h, &btree_geo128,
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(unsigned long *)&key, val, gfp);
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}
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static inline int btree_update128(struct btree_head128 *head, u64 k1, u64 k2,
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void *val)
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{
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u64 key[2] = {k1, k2};
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return btree_update(&head->h, &btree_geo128,
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(unsigned long *)&key, val);
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}
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static inline void *btree_remove128(struct btree_head128 *head, u64 k1, u64 k2)
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{
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u64 key[2] = {k1, k2};
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return btree_remove(&head->h, &btree_geo128, (unsigned long *)&key);
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}
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static inline void *btree_last128(struct btree_head128 *head, u64 *k1, u64 *k2)
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{
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u64 key[2];
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void *val;
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val = btree_last(&head->h, &btree_geo128, (unsigned long *)&key[0]);
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if (val) {
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*k1 = key[0];
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*k2 = key[1];
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}
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return val;
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}
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static inline int btree_merge128(struct btree_head128 *target,
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struct btree_head128 *victim,
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gfp_t gfp)
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{
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return btree_merge(&target->h, &victim->h, &btree_geo128, gfp);
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}
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void visitor128(void *elem, unsigned long opaque, unsigned long *__key,
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size_t index, void *__func);
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typedef void (*visitor128_t)(void *elem, unsigned long opaque,
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u64 key1, u64 key2, size_t index);
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static inline size_t btree_visitor128(struct btree_head128 *head,
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unsigned long opaque,
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visitor128_t func2)
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{
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return btree_visitor(&head->h, &btree_geo128, opaque,
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visitor128, func2);
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}
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static inline size_t btree_grim_visitor128(struct btree_head128 *head,
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unsigned long opaque,
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visitor128_t func2)
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{
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return btree_grim_visitor(&head->h, &btree_geo128, opaque,
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visitor128, func2);
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}
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#define btree_for_each_safe128(head, k1, k2, val) \
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for (val = btree_last128(head, &k1, &k2); \
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val; \
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val = btree_get_prev128(head, &k1, &k2))
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