Revision 6af4e9ea block/qcow2-cache.c
| b/block/qcow2-cache.c | ||
|---|---|---|
| 40 | 40 |
struct Qcow2Cache* depends; |
| 41 | 41 |
int size; |
| 42 | 42 |
bool depends_on_flush; |
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bool writethrough; |
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}; |
| 45 | 44 |
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Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables, |
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bool writethrough) |
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Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables) |
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{
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BDRVQcowState *s = bs->opaque; |
| 50 | 48 |
Qcow2Cache *c; |
| ... | ... | |
| 53 | 51 |
c = g_malloc0(sizeof(*c)); |
| 54 | 52 |
c->size = num_tables; |
| 55 | 53 |
c->entries = g_malloc0(sizeof(*c->entries) * num_tables); |
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c->writethrough = writethrough; |
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| 57 | 54 |
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for (i = 0; i < c->size; i++) {
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c->entries[i].table = qemu_blockalign(bs, s->cluster_size); |
| ... | ... | |
| 307 | 304 |
*table = NULL; |
| 308 | 305 |
|
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assert(c->entries[i].ref >= 0); |
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if (c->writethrough) {
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return qcow2_cache_entry_flush(bs, c, i); |
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} else {
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return 0; |
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} |
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return 0; |
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} |
| 317 | 309 |
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void qcow2_cache_entry_mark_dirty(Qcow2Cache *c, void *table) |
| ... | ... | |
| 329 | 321 |
found: |
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c->entries[i].dirty = true; |
| 331 | 323 |
} |
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|
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bool qcow2_cache_set_writethrough(BlockDriverState *bs, Qcow2Cache *c, |
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bool enable) |
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{
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bool old = c->writethrough; |
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if (!old && enable) {
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qcow2_cache_flush(bs, c); |
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} |
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c->writethrough = enable; |
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return old; |
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} |
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