dmu_tx kstat cleanup

A few counters in the dmu_tx kstats are obsolete or no longer
bumped properly.

- The sync task restructuring commit
  13fe019870c8779bf2f5b3ff731b512cf89133ef removed the code
  that bumpted dmu_tx_quota. The counter is now bumped in two
  cases, instead of just the one case as before (after the result
  of dsl_dataset_check_quota call). The second case is where
  we check the requested reservation against the actual pool size,
  as this is an implicit quota of sorts.

- The write throttle restructuring commit
  e8b96c6007bf97cdf34869c1ffbd0ce753873a3d makes dmu_tx_how and
  dmu_tx_inflight obsolete, so they are removed.

Signed-off-by: Kohsuke Kawaguchi <[email protected]>
Signed-off-by: Ned Bass <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #1914

1 files changed, 2 insertions, 0 deletions

diff --git a/module/zfs/dsl_dir.c b/module/zfs/dsl_dir.c
index f649bba4c..fb7cd2cd6 100644
--- a/module/zfs/dsl_dir.c
+++ b/module/zfs/dsl_dir.c
@@ -635,6 +635,7 @@ dsl_dir_tempreserve_impl(dsl_dir_t *dd, uint64_t asize, boolean_t netfree,
 		    asize, est_inflight, &used_on_disk, &ref_rsrv);
 		if (error) {
 			mutex_exit(&dd->dd_lock);
+			DMU_TX_STAT_BUMP(dmu_tx_quota);
 			return (error);
 		}
 	}
@@ -683,6 +684,7 @@ dsl_dir_tempreserve_impl(dsl_dir_t *dd, uint64_t asize, boolean_t netfree,
 		    used_on_disk>>10, est_inflight>>10,
 		    quota>>10, asize>>10, retval);
 		mutex_exit(&dd->dd_lock);
+		DMU_TX_STAT_BUMP(dmu_tx_quota);
 		return (SET_ERROR(retval));
 	}