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Register callbacks for reclaiming kvm kernel space to arc. Unregister both

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kvm address space and memory callbacks from kernel during arc_fini call.
This commit is contained in:
haad 2009-08-12 21:52:41 +00:00
parent e46010532d
commit 732a349764
1 changed files with 29 additions and 3 deletions
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32
external/cddl/osnet/dist/uts/common/fs/zfs/arc.c vendored
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@ -167,6 +167,12 @@ vmem_size(struct vm_map *map, int flag)
}
}
static void *zio_arena;
#include <sys/callback.h>
/* Structures used for memory and kva space reclaim. */
static struct callback_entry arc_kva_reclaim_entry;
static struct uvm_reclaim_hook arc_hook;
#endif /* __NetBSD__ */
static kmutex_t arc_reclaim_thr_lock;
@ -3380,6 +3386,19 @@ arc_uvm_reclaim_hook(void)
}
}
static int
arc_kva_reclaim_callback(struct callback_entry *ce, void *obj, void *arg)
{
if (mutex_tryenter(&arc_reclaim_thr_lock)) {
cv_broadcast(&arc_reclaim_thr_cv);
mutex_exit(&arc_reclaim_thr_lock);
}
return CALLBACK_CHAIN_CONTINUE;
}
#endif /* __NetBSD__ */
void
@ -3495,11 +3514,12 @@ arc_init(void)
TS_RUN, maxclsyspri);
#if defined(__NetBSD__) && defined(_KERNEL)
static struct uvm_reclaim_hook hook;
arc_hook.uvm_reclaim_hook = &arc_uvm_reclaim_hook;
hook.uvm_reclaim_hook = &arc_uvm_reclaim_hook;
uvm_reclaim_hook_add(&arc_hook);
callback_register(&vm_map_to_kernel(kernel_map)->vmk_reclaim_callback,
&arc_kva_reclaim_entry, NULL, arc_kva_reclaim_callback);
uvm_reclaim_hook_add(&hook);
#endif
arc_dead = FALSE;
@ -3552,6 +3572,12 @@ arc_fini(void)
mutex_destroy(&zfs_write_limit_lock);
#if defined(__NetBSD__) && defined(_KERNEL)
uvm_reclaim_hook_del(&arc_hook);
callback_unregister(&vm_map_to_kernel(kernel_map)->vmk_reclaim_callback,
&arc_kva_reclaim_entry);
#endif
buf_fini();
}