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bdb7df4245
In most cases dmu_sync() works with dirty records directly and does not need actual data. The only exception is dmu_sync_late_arrival(). To save some CPU time use dmu_buf_hold_noread*() in z*_get_data() and explicitly call dbuf_read() in dmu_sync_late_arrival(). There is also a chance that by that time TXG will already be synced and we won't have to do it at all. Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15153 |
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