Hi,
I just added an NFS mount to a ppc64 box that had been up for a while.
This required inserting the nfsd module. Unfortunately it failed:
modprobe: page allocation failure. order:5, mode:0xd0
Trace:
[c0000000000ba0f8] alloc_pages_current+0xc0/0xe4
[c0000000000941fc] __get_free_pages+0x54/0x1e0
[d00000000046f7d8] nfsd_cache_init+0x54/0x1a4 [nfsd]
[d0000000004782cc] init_nfsd+0x30/0x2564 [nfsd]
[c000000000084bec] sys_init_module+0x23c/0x5ac
[c00000000001045c] ret_from_syscall_1+0x0/0xa4
nfsd: cannot allocate 98304 bytes for reply cache
An order 5 allocation. Replace it with a vmalloc.
Anton
Signed-off-by: Anton Blanchard <[EMAIL PROTECTED]>
diff -puN fs/nfsd/nfscache.c~fix_nfsd_allocation fs/nfsd/nfscache.c
--- foobar2/fs/nfsd/nfscache.c~fix_nfsd_allocation 2005-01-27
13:56:14.248445552 +1100
+++ foobar2-anton/fs/nfsd/nfscache.c 2005-01-27 14:22:52.764642869 +1100
@@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/spinlock.h>
+#include <linux/vmalloc.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
@@ -56,14 +57,10 @@ nfsd_cache_init(void)
struct svc_cacherep *rp;
struct nfscache_head *rh;
size_t i;
- unsigned long order;
-
i = CACHESIZE * sizeof (struct svc_cacherep);
- for (order = 0; (PAGE_SIZE << order) < i; order++)
- ;
- nfscache = (struct svc_cacherep *)
- __get_free_pages(GFP_KERNEL, order);
+
+ nfscache = vmalloc(i);
if (!nfscache) {
printk (KERN_ERR "nfsd: cannot allocate %Zd bytes for reply
cache\n", i);
return;
@@ -73,7 +70,7 @@ nfsd_cache_init(void)
i = HASHSIZE * sizeof (struct nfscache_head);
hash_list = kmalloc (i, GFP_KERNEL);
if (!hash_list) {
- free_pages ((unsigned long)nfscache, order);
+ vfree(nfscache);
nfscache = NULL;
printk (KERN_ERR "nfsd: cannot allocate %Zd bytes for hash
list\n", i);
return;
@@ -102,8 +99,6 @@ void
nfsd_cache_shutdown(void)
{
struct svc_cacherep *rp;
- size_t i;
- unsigned long order;
for (rp = lru_head; rp; rp = rp->c_lru_next) {
if (rp->c_state == RC_DONE && rp->c_type == RC_REPLBUFF)
@@ -112,10 +107,7 @@ nfsd_cache_shutdown(void)
cache_disabled = 1;
- i = CACHESIZE * sizeof (struct svc_cacherep);
- for (order = 0; (PAGE_SIZE << order) < i; order++)
- ;
- free_pages ((unsigned long)nfscache, order);
+ vfree(nfscache);
nfscache = NULL;
kfree (hash_list);
hash_list = NULL;
_
-
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