Matt Macy 9f3a171221 Enable balanced arc pruning ... Taken from: ommit f604673836 Author: Brian Behlendorf <behlendorf1@llnl.gov> Date: Sat May 30 09:57:53 2015 -0500 Make arc_prune() asynchronous As described in the comment above arc_adapt_thread() it is critical that the arc_adapt_thread() function never sleep while holding a hash lock. This behavior was possible in the Linux implementation because the arc_prune() logic was implemented to be synchronous. Under illumos the analogous dnlc_reduce_cache() function is asynchronous. To address this the arc_do_user_prune() function is has been reworked in to two new functions as follows: * arc_prune_async() is an asynchronous implementation which dispatches the prune callback to be run by the system taskq. This makes it suitable to use in the context of the arc_adapt_thread(). * arc_prune() is a synchronous implementation which depends on the arc_prune_async() implementation but blocks until the outstanding callbacks complete. This is used in arc_kmem_reap_now() where it is safe, and expected, that memory will be freed. This patch additionally adds the zfs_arc_meta_strategy module option while allows the meta reclaim strategy to be configured. It defaults to a balanced strategy which has been proved to work well under Linux but the illumos meta-only strategy can be enabled. Signed-off-by: Tim Chase <tim@chase2k.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>		2018-08-11 22:01:52 +00:00
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boot/zfs	Mark two things as unused (since they are only sometimes used) and	2017-12-03 04:55:33 +00:00
compat/opensolaris	opensolaris compat: fix compile error	2018-07-03 23:45:02 +00:00
contrib/opensolaris	Enable balanced arc pruning	2018-08-11 22:01:52 +00:00
dev	dtrace/powerpc: Correct register indices for non-indexed registers in the trapframe	2018-07-16 19:47:29 +00:00