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Use dsl_dataset_snap_lookup()

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Retire the dmu_snapshot_id() function which was introduced in the
initial .zfs control directory implementation.  There is already
an existing dsl_dataset_snap_lookup() which does exactly what we
need, and the dmu_snapshot_id() function as implemented is racy.

https://github.com/zfsonlinux/zfs/issues/1215#issuecomment-12579879

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1238
This commit is contained in:
Brian Behlendorf
2013-01-25 14:57:53 -08:00
parent ba43f4565a
commit 6772fb679a
5 changed files with 8 additions and 35 deletions
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include/sys/dsl_dataset.h
+2
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@@ -251,6 +251,8 @@ int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
boolean_t dsl_dataset_block_freeable(dsl_dataset_t *ds, const blkptr_t *bp,
uint64_t blk_birth);
uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
uint64_t *value);
void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);