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Illumos 6171 - dsl_prop_unregister() slows down dataset eviction.

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6171 dsl_prop_unregister() slows down dataset eviction.
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/6171
  https://github.com/illumos/illumos-gate/commit/03bad06

Porting notes:
  - Conflicts
    - 3558fd7 Prototype/structure update for Linux
    - 2cf7f52 Linux compat 2.6.39: mount_nodev()
    - 13fe019 Illumos #3464
    - 241b541 Illumos 5959 - clean up per-dataset feature count code
  - dsl_prop_unregister() preserved until out of tree consumers
    like Lustre can transition to dsl_prop_unregister_all().
  - Fixing 'space or tab at end of line' in include/sys/dsl_dataset.h

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Justin T. Gibbs
2015-11-05 00:00:58 +01:00
committed by Brian Behlendorf
parent 5a28a9737a
commit 0eb21616fa
8 changed files with 186 additions and 190 deletions
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include/sys/dsl_dataset.h
+3
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@@ -184,6 +184,9 @@ typedef struct dsl_dataset {
kmutex_t ds_sendstream_lock;
list_t ds_sendstreams;
/* Protected by our dsl_dir's dd_lock */
list_t ds_prop_cbs;
/*
* For ZFEATURE_FLAG_PER_DATASET features, set if this dataset
* uses this feature.