Brian Atkinson 187f931372 Update ABD stats for linear page Linux ... a10e552 updated abd_free_linear_page() to no longer call abd_update_scatter_stat(). This meant that linear pages that were not attached to Direct I/O requests were not doing waste accounting for the ARC. This led to performance issues due to incorrect ARC accounting that resulted in 100% of CPU time being spent in arc_evict() during prolonged I/O workloads with the ARC. The call to abd_update_scatter_stats() is now conditionally called in abd_free_linear_page() when the ABD is not from a Direct I/O request. Reviewed-by: Mark Maybee <mmaybee@delphix.com> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Brian Atkinson <batkinson@lanl.gov> Closes #16729		2024-11-07 11:11:05 -08:00
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spl	config: fix dequeue_signal check for kernels <4.20	2024-10-20 19:50:13 -07:00
zfs	Update ABD stats for linear page Linux	2024-11-07 11:11:05 -08:00