Revision ef72f76e block/qed.c
| b/block/qed.c | ||
|---|---|---|
| 1363 | 1363 |
int nb_sectors) |
| 1364 | 1364 |
{
|
| 1365 | 1365 |
BlockDriverAIOCB *blockacb; |
| 1366 |
BDRVQEDState *s = bs->opaque; |
|
| 1366 | 1367 |
QEDWriteZeroesCB cb = { .done = false };
|
| 1367 | 1368 |
QEMUIOVector qiov; |
| 1368 | 1369 |
struct iovec iov; |
| 1369 | 1370 |
|
| 1371 |
/* Refuse if there are untouched backing file sectors */ |
|
| 1372 |
if (bs->backing_hd) {
|
|
| 1373 |
if (qed_offset_into_cluster(s, sector_num * BDRV_SECTOR_SIZE) != 0) {
|
|
| 1374 |
return -ENOTSUP; |
|
| 1375 |
} |
|
| 1376 |
if (qed_offset_into_cluster(s, nb_sectors * BDRV_SECTOR_SIZE) != 0) {
|
|
| 1377 |
return -ENOTSUP; |
|
| 1378 |
} |
|
| 1379 |
} |
|
| 1380 |
|
|
| 1370 | 1381 |
/* Zero writes start without an I/O buffer. If a buffer becomes necessary |
| 1371 | 1382 |
* then it will be allocated during request processing. |
| 1372 | 1383 |
*/ |
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