Revision 3d1807ac
| b/block/raw-posix.c | ||
|---|---|---|
| 133 | 133 |
int use_aio; |
| 134 | 134 |
void *aio_ctx; |
| 135 | 135 |
#endif |
| 136 |
uint8_t *aligned_buf; |
|
| 137 |
unsigned aligned_buf_size; |
|
| 138 | 136 |
#ifdef CONFIG_XFS |
| 139 | 137 |
bool is_xfs : 1; |
| 140 | 138 |
#endif |
| ... | ... | |
| 259 | 257 |
return ret; |
| 260 | 258 |
} |
| 261 | 259 |
s->fd = fd; |
| 262 |
s->aligned_buf = NULL; |
|
| 263 |
|
|
| 264 |
if ((bdrv_flags & BDRV_O_NOCACHE)) {
|
|
| 265 |
/* |
|
| 266 |
* Allocate a buffer for read/modify/write cycles. Chose the size |
|
| 267 |
* pessimistically as we don't know the block size yet. |
|
| 268 |
*/ |
|
| 269 |
s->aligned_buf_size = 32 * MAX_BLOCKSIZE; |
|
| 270 |
s->aligned_buf = qemu_memalign(MAX_BLOCKSIZE, s->aligned_buf_size); |
|
| 271 |
if (s->aligned_buf == NULL) {
|
|
| 272 |
goto out_close; |
|
| 273 |
} |
|
| 274 |
} |
|
| 275 | 260 |
|
| 276 | 261 |
/* We're falling back to POSIX AIO in some cases so init always */ |
| 277 | 262 |
if (paio_init() < 0) {
|
| 278 |
goto out_free_buf;
|
|
| 263 |
goto out_close;
|
|
| 279 | 264 |
} |
| 280 | 265 |
|
| 281 | 266 |
#ifdef CONFIG_LINUX_AIO |
| ... | ... | |
| 292 | 277 |
|
| 293 | 278 |
return 0; |
| 294 | 279 |
|
| 295 |
out_free_buf: |
|
| 296 |
qemu_vfree(s->aligned_buf); |
|
| 297 | 280 |
out_close: |
| 298 | 281 |
qemu_close(fd); |
| 299 | 282 |
return -errno; |
| ... | ... | |
| 402 | 385 |
if (s->fd >= 0) {
|
| 403 | 386 |
qemu_close(s->fd); |
| 404 | 387 |
s->fd = -1; |
| 405 |
if (s->aligned_buf != NULL) |
|
| 406 |
qemu_vfree(s->aligned_buf); |
|
| 407 | 388 |
} |
| 408 | 389 |
} |
| 409 | 390 |
|
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