74 static void qcow2_cache_table_release(Qcow2Cache *c, int i, int num_tables)  in qcow2_cache_table_release()  argument
78     void *t = qcow2_cache_get_table_addr(c, i);  in qcow2_cache_table_release()
89 static inline bool can_clean_entry(Qcow2Cache *c, int i)  in can_clean_entry()  argument
91     Qcow2CachedTable *t = &c->entries[i];  in can_clean_entry()
98     int i = 0;  in qcow2_cache_clean_unused()  local
99     while (i < c->size) {  in qcow2_cache_clean_unused()
103         while (i < c->size && !can_clean_entry(c, i)) {  in qcow2_cache_clean_unused()
104             i++;  in qcow2_cache_clean_unused()
108         while (i < c->size && can_clean_entry(c, i)) {  in qcow2_cache_clean_unused()
109             c->entries[i].offset = 0;  in qcow2_cache_clean_unused()
110             c->entries[i].lru_counter = 0;  in qcow2_cache_clean_unused()
111             i++;  in qcow2_cache_clean_unused()
116             qcow2_cache_table_release(c, i - to_clean, to_clean);  in qcow2_cache_clean_unused()
153     int i;  in qcow2_cache_destroy()  local
155     for (i = 0; i < c->size; i++) {  in qcow2_cache_destroy()
156         assert(c->entries[i].ref == 0);  in qcow2_cache_destroy()
183 qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)  in qcow2_cache_entry_flush()  argument
188     if (!c->entries[i].dirty || !c->entries[i].offset) {  in qcow2_cache_entry_flush()
193                                   c == s->l2_table_cache, i);  in qcow2_cache_entry_flush()
210                 c->entries[i].offset, c->table_size, false);  in qcow2_cache_entry_flush()
213                 c->entries[i].offset, c->table_size, false);  in qcow2_cache_entry_flush()
216                 c->entries[i].offset, c->table_size, false);  in qcow2_cache_entry_flush()
229     ret = bdrv_pwrite(bs->file, c->entries[i].offset, c->table_size,  in qcow2_cache_entry_flush()
230                       qcow2_cache_get_table_addr(c, i), 0);  in qcow2_cache_entry_flush()
235     c->entries[i].dirty = false;  in qcow2_cache_entry_flush()
245     int i;  in qcow2_cache_write()  local
249     for (i = 0; i < c->size; i++) {  in qcow2_cache_write()
250         ret = qcow2_cache_entry_flush(bs, c, i);  in qcow2_cache_write()
303     int ret, i;  in qcow2_cache_empty()  local
310     for (i = 0; i < c->size; i++) {  in qcow2_cache_empty()
311         assert(c->entries[i].ref == 0);  in qcow2_cache_empty()
312         c->entries[i].offset = 0;  in qcow2_cache_empty()
313         c->entries[i].lru_counter = 0;  in qcow2_cache_empty()
328     int i;  in qcow2_cache_do_get()  local
347     i = lookup_index = (offset / c->table_size * 4) % c->size;  in qcow2_cache_do_get()
349         const Qcow2CachedTable *t = &c->entries[i];  in qcow2_cache_do_get()
355             min_lru_index = i;  in qcow2_cache_do_get()
357         if (++i == c->size) {  in qcow2_cache_do_get()
358             i = 0;  in qcow2_cache_do_get()
360     } while (i != lookup_index);  in qcow2_cache_do_get()
369     i = min_lru_index;  in qcow2_cache_do_get()
371                                         c == s->l2_table_cache, i);  in qcow2_cache_do_get()
373     ret = qcow2_cache_entry_flush(bs, c, i);  in qcow2_cache_do_get()
379                                c == s->l2_table_cache, i);  in qcow2_cache_do_get()
380     c->entries[i].offset = 0;  in qcow2_cache_do_get()
387                          qcow2_cache_get_table_addr(c, i), 0);  in qcow2_cache_do_get()
393     c->entries[i].offset = offset;  in qcow2_cache_do_get()
397     c->entries[i].ref++;  in qcow2_cache_do_get()
398     *table = qcow2_cache_get_table_addr(c, i);  in qcow2_cache_do_get()
401                                c == s->l2_table_cache, i);  in qcow2_cache_do_get()
420     int i = qcow2_cache_get_table_idx(c, *table);  in qcow2_cache_put()  local
422     c->entries[i].ref--;  in qcow2_cache_put()
425     if (c->entries[i].ref == 0) {  in qcow2_cache_put()
426         c->entries[i].lru_counter = ++c->lru_counter;  in qcow2_cache_put()
429     assert(c->entries[i].ref >= 0);  in qcow2_cache_put()
434     int i = qcow2_cache_get_table_idx(c, table);  in qcow2_cache_entry_mark_dirty()  local
435     assert(c->entries[i].offset != 0);  in qcow2_cache_entry_mark_dirty()
436     c->entries[i].dirty = true;  in qcow2_cache_entry_mark_dirty()
441     int i;  in qcow2_cache_is_table_offset()  local
443     for (i = 0; i < c->size; i++) {  in qcow2_cache_is_table_offset()
444         if (c->entries[i].offset == offset) {  in qcow2_cache_is_table_offset()
445             return qcow2_cache_get_table_addr(c, i);  in qcow2_cache_is_table_offset()
453     int i = qcow2_cache_get_table_idx(c, table);  in qcow2_cache_discard()  local
455     assert(c->entries[i].ref == 0);  in qcow2_cache_discard()
457     c->entries[i].offset = 0;  in qcow2_cache_discard()
458     c->entries[i].lru_counter = 0;  in qcow2_cache_discard()
459     c->entries[i].dirty = false;  in qcow2_cache_discard()
461     qcow2_cache_table_release(c, i, 1);  in qcow2_cache_discard()