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ab6f407faa
The dsl_dataset_rollback_check() function is executed in the
txg_sync context. To prevent a potential deadlock due to direct
memory reclaim it must use KM_PUSHPAGE. This was introduced by
the recent 'zfs bookmark' features, commit da53684.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Eric Dillmann <eric@jave.fr>
Closes #2569