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| author | alc <alc@FreeBSD.org> | 2013-04-18 05:34:33 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2013-04-18 05:34:33 +0000 |
| commit | aaf865752d7ec3c065524e8a254d5cd38cd2dbc2 (patch) | |
| tree | 520d396b7993ef86ab8915049785f4b9b47a3e56 /sys/vm/vm_radix.c | |
| parent | 05a4fb8c6e2d4ef9d563419c0af6b81ab5bfd6c0 (diff) | |
| download | FreeBSD-src-aaf865752d7ec3c065524e8a254d5cd38cd2dbc2.zip FreeBSD-src-aaf865752d7ec3c065524e8a254d5cd38cd2dbc2.tar.gz | |
When calculating the number of reserved nodes, discount the pages that will
be used to store the nodes.
Sponsored by: EMC / Isilon Storage Division
Diffstat (limited to 'sys/vm/vm_radix.c')
| -rw-r--r-- | sys/vm/vm_radix.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/vm/vm_radix.c b/sys/vm/vm_radix.c index 30869de..970bc66 100644 --- a/sys/vm/vm_radix.c +++ b/sys/vm/vm_radix.c @@ -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); |
