Files
mirror_zfs/module/zfs
Alexander Motin 4fbc524955 Remove lock from dsl_pool_need_dirty_delay()
Torn reads/writes of dp_dirty_total are unlikely: on 64-bit systems
due to register size, while on 32-bit due to memory constraints.
And even if we hit some race, the code implementing the delay takes
the lock any way.

Removal of the poll-wide lock acquisition saves ~1% of CPU time on
8-thread 8KB write workload.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #15390
2023-10-20 12:37:16 -07:00
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