d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
be used to store the nodes.

Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
Alan Cox 2013-04-18 05:34:33 +00:00
parent acad2b1e22
commit 880659fe81
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=249605
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
sys/vm/vm_radix.c
View File

@ -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);