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OpenZFS 7003 - zap_lockdir() should tag hold

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zap_lockdir() / zap_unlockdir() should take a "void *tag" argument which
tags the hold on the zap. This will help diagnose programming errors
which misuse the hold on the ZAP.

Sponsored by: Intel Corp.

Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Pavel Zakharov <pavel.zakha@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/7003
OpenZFS-commit: https://github.com/openzfs/openzfs/pull/108
Closes #4972
This commit is contained in:
Matthew Ahrens
2016-07-20 15:39:55 -07:00
committed by Brian Behlendorf
parent ee6370a7a4
commit 8bea981504
5 changed files with 154 additions and 106 deletions
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include/sys/dmu.h
+2
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@@ -619,6 +619,8 @@ void *dmu_buf_remove_user(dmu_buf_t *db, dmu_buf_user_t *user);
*/
void *dmu_buf_get_user(dmu_buf_t *db);
objset_t *dmu_buf_get_objset(dmu_buf_t *db);
/* Block until any in-progress dmu buf user evictions complete. */
void dmu_buf_user_evict_wait(void);