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When calculating the number of reserved nodes, discount the pages that will

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be used to store the nodes.

Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
alc 2013-04-18 05:34:33 +00:00
parent 05a4fb8c6e
commit aaf865752d
1 changed files with 9 additions and 2 deletions
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11
sys/vm/vm_radix.c
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@ -360,10 +360,17 @@ vm_radix_node_zone_init(void *mem, int size __unused, int flags __unused)
static void
vm_radix_prealloc(void *arg __unused)
{
int nodes;
if (!uma_zone_reserve_kva(vm_radix_node_zone, cnt.v_page_count))
/*
* Calculate the number of reserved nodes, discounting the pages that
* are needed to store them.
*/
nodes = ((vm_paddr_t)cnt.v_page_count * PAGE_SIZE) / (PAGE_SIZE +
sizeof(struct vm_radix_node));
if (!uma_zone_reserve_kva(vm_radix_node_zone, nodes))
panic("%s: unable to create new zone", __func__);
uma_prealloc(vm_radix_node_zone, cnt.v_page_count);
uma_prealloc(vm_radix_node_zone, nodes);
}
SYSINIT(vm_radix_prealloc, SI_SUB_KMEM, SI_ORDER_SECOND, vm_radix_prealloc,
NULL);