| dsl_dir.c (239774) | dsl_dir.c (240133) |
|---|---|
| 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 448 unchanged lines hidden (view full) --- 457 dsl_pool_t *dp = dd->dd_pool; 458 objset_t *mos = dp->dp_meta_objset; 459 int err; 460 uint64_t count; 461 462 /* 463 * There should be exactly two holds, both from 464 * dsl_dataset_destroy: one on the dd directory, and one on its | 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 448 unchanged lines hidden (view full) --- 457 dsl_pool_t *dp = dd->dd_pool; 458 objset_t *mos = dp->dp_meta_objset; 459 int err; 460 uint64_t count; 461 462 /* 463 * There should be exactly two holds, both from 464 * dsl_dataset_destroy: one on the dd directory, and one on its |
| 465 * head ds. Otherwise, someone is trying to lookup something 466 * inside this dir while we want to destroy it. The 467 * config_rwlock ensures that nobody else opens it after we 468 * check. | 465 * head ds. If there are more holds, then a concurrent thread is 466 * performing a lookup inside this dir while we're trying to destroy 467 * it. To minimize this possibility, we perform this check only 468 * in syncing context and fail the operation if we encounter 469 * additional holds. The dp_config_rwlock ensures that nobody else 470 * opens it after we check. |
| 469 */ | 471 */ |
| 470 if (dmu_buf_refcount(dd->dd_dbuf) > 2) | 472 if (dmu_tx_is_syncing(tx) && dmu_buf_refcount(dd->dd_dbuf) > 2) |
| 471 return (EBUSY); 472 473 err = zap_count(mos, dd->dd_phys->dd_child_dir_zapobj, &count); 474 if (err) 475 return (err); 476 if (count != 0) 477 return (EEXIST); 478 --- 945 unchanged lines hidden --- | 473 return (EBUSY); 474 475 err = zap_count(mos, dd->dd_phys->dd_child_dir_zapobj, &count); 476 if (err) 477 return (err); 478 if (count != 0) 479 return (EEXIST); 480 --- 945 unchanged lines hidden --- |