Matthew Ahrens 20f287855a zvol_write() can use dmu_tx_hold_write_by_dnode() ... We can improve the performance of writes to zvols by using dmu_tx_hold_write_by_dnode() instead of dmu_tx_hold_write(). This reduces lock contention on the first block of the dnode object, and also reduces the amount of CPU needed. The benefit will be highest with multi-threaded async writes (i.e. writes that don't call zil_commit()). Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Signed-off-by: Matthew Ahrens <mahrens@delphix.com> Closes #10184		2020-04-10 21:14:01 -07:00
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linux	zvol_write() can use dmu_tx_hold_write_by_dnode()	2020-04-10 21:14:01 -07:00
Makefile.in	OpenZFS restructuring - move platform specific sources	2019-09-06 11:26:26 -07:00