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Fix for ARC sysctls ignored at runtime

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This change leverage module_param_call() to run arc_tuning_update()
immediately after the ARC tunable has been updated as suggested in
cffa8372 code review.

A simple test case is added to the ZFS Test Suite to prevent future
regressions in functionality.

Reviewed-by: Matt Macy <mmacy@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #9487  
Closes #9489
This commit is contained in:
loli10K
2019-10-27 00:22:19 +02:00
committed by Brian Behlendorf
parent 6963414d70
commit e35704647e
10 changed files with 178 additions and 42 deletions
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include/sys/arc_impl.h
+4
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@@ -611,6 +611,10 @@ extern void arc_prune_async(int64_t);
extern int arc_memory_throttle(spa_t *spa, uint64_t reserve, uint64_t txg);
extern uint64_t arc_free_memory(void);
extern int64_t arc_available_memory(void);
extern void arc_tuning_update(void);
extern int param_set_arc_long(const char *buf, zfs_kernel_param_t *kp);
extern int param_set_arc_int(const char *buf, zfs_kernel_param_t *kp);
#ifdef __cplusplus
}