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3740 Poor ZFS send / receive performance due to snapshot hold / release processing
Submitted by: Steven Hartland <steven.hartland@multiplay.co.uk>

*** 41,52 **** int dsl_dataset_user_hold(nvlist_t *holds, minor_t cleanup_minor, nvlist_t *errlist); int dsl_dataset_user_release(nvlist_t *holds, nvlist_t *errlist); int dsl_dataset_get_holds(const char *dsname, nvlist_t *nvl); ! void dsl_dataset_user_release_tmp(struct dsl_pool *dp, uint64_t dsobj, ! const char *htag); int dsl_dataset_user_hold_check_one(struct dsl_dataset *ds, const char *htag, boolean_t temphold, struct dmu_tx *tx); void dsl_dataset_user_hold_sync_one(struct dsl_dataset *ds, const char *htag, minor_t minor, uint64_t now, struct dmu_tx *tx); --- 41,51 ---- int dsl_dataset_user_hold(nvlist_t *holds, minor_t cleanup_minor, nvlist_t *errlist); int dsl_dataset_user_release(nvlist_t *holds, nvlist_t *errlist); int dsl_dataset_get_holds(const char *dsname, nvlist_t *nvl); ! void dsl_dataset_user_release_tmp(struct dsl_pool *dp, nvlist_t *holds); int dsl_dataset_user_hold_check_one(struct dsl_dataset *ds, const char *htag, boolean_t temphold, struct dmu_tx *tx); void dsl_dataset_user_hold_sync_one(struct dsl_dataset *ds, const char *htag, minor_t minor, uint64_t now, struct dmu_tx *tx);