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OpenZFS 7199 - dsl_dataset_rollback_sync may try to free already free blocks

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7200 no blocks must be born in a txg after a snaphot is created
Authored by: Andriy Gapon <andriy.gapon@clusterhq.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Approved by: Gordon Ross <gordon.w.ross@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>

OpenZFS-issue: https://www.illumos.org/issues/7199
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/bfaed0b
Closes #5817
This commit is contained in:
Andriy Gapon
2016-11-21 15:09:54 -08:00
committed by Brian Behlendorf
parent 409b4127ee
commit 0efd97912a
3 changed files with 59 additions and 16 deletions
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include/sys/dsl_dataset.h
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@@ -280,6 +280,7 @@ boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
dsl_dataset_t *snap);
void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx);
void dsl_dataset_sync_done(dsl_dataset_t *os, dmu_tx_t *tx);
void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
dmu_tx_t *tx);