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authorStanislav Kinsbursky <skinsbursky@parallels.com>2012-04-11 15:13:28 +0400
committerJ. Bruce Fields <bfields@redhat.com>2012-04-12 09:11:46 -0400
commite5f06f720eff24e32f1cc08ec03bcc8c4b2d2934 (patch)
tree9afeda20ea7ea07f6c1bbcc9dc5979c98cc62def /fs/nfsd
parentb3853e0ea1f2ef58f7e7c03e47819e2ae3766dea (diff)
downloadlinux-e5f06f720eff24e32f1cc08ec03bcc8c4b2d2934.tar.bz2
nfsd: make expkey cache allocated per network namespace context
This patch also changes svcauth_unix_purge() function: added network namespace as a parameter and thus loop over all networks was replaced by only one call for ip map cache purge. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/export.c28
-rw-r--r--fs/nfsd/netns.h1
-rw-r--r--fs/nfsd/nfsctl.c3
3 files changed, 20 insertions, 12 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 84d020fc0e37..dcb52b884519 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -40,7 +40,6 @@ typedef struct svc_export svc_export;
#define EXPKEY_HASHBITS 8
#define EXPKEY_HASHMAX (1 << EXPKEY_HASHBITS)
#define EXPKEY_HASHMASK (EXPKEY_HASHMAX -1)
-static struct cache_head *expkey_table[EXPKEY_HASHMAX];
static void expkey_put(struct kref *ref)
{
@@ -241,10 +240,9 @@ static struct cache_head *expkey_alloc(void)
return NULL;
}
-static struct cache_detail svc_expkey_cache = {
+static struct cache_detail svc_expkey_cache_template = {
.owner = THIS_MODULE,
.hash_size = EXPKEY_HASHMAX,
- .hash_table = expkey_table,
.name = "nfsd.fh",
.cache_put = expkey_put,
.cache_upcall = expkey_upcall,
@@ -883,12 +881,13 @@ static struct svc_export *exp_find(struct cache_detail *cd,
u32 *fsidv, struct cache_req *reqp)
{
struct svc_export *exp;
- struct svc_expkey *ek = exp_find_key(&svc_expkey_cache, clp, fsid_type, fsidv, reqp);
+ struct nfsd_net *nn = net_generic(cd->net, nfsd_net_id);
+ struct svc_expkey *ek = exp_find_key(nn->svc_expkey_cache, clp, fsid_type, fsidv, reqp);
if (IS_ERR(ek))
return ERR_CAST(ek);
exp = exp_get_by_name(cd, clp, &ek->ek_path, reqp);
- cache_put(&ek->h, &svc_expkey_cache);
+ cache_put(&ek->h, nn->svc_expkey_cache);
if (IS_ERR(exp))
return ERR_CAST(exp);
@@ -1232,7 +1231,6 @@ const struct seq_operations nfs_exports_op = {
.show = e_show,
};
-
/*
* Initialize the exports module.
*/
@@ -1251,11 +1249,18 @@ nfsd_export_init(struct net *net)
if (rv)
goto destroy_export_cache;
- rv = cache_register_net(&svc_expkey_cache, net);
- if (rv)
+ nn->svc_expkey_cache = cache_create_net(&svc_expkey_cache_template, net);
+ if (IS_ERR(nn->svc_expkey_cache)) {
+ rv = PTR_ERR(nn->svc_expkey_cache);
goto unregister_export_cache;
+ }
+ rv = cache_register_net(nn->svc_expkey_cache, net);
+ if (rv)
+ goto destroy_expkey_cache;
return 0;
+destroy_expkey_cache:
+ cache_destroy_net(nn->svc_expkey_cache, net);
unregister_export_cache:
cache_unregister_net(nn->svc_export_cache, net);
destroy_export_cache:
@@ -1271,7 +1276,7 @@ nfsd_export_flush(struct net *net)
{
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
- cache_purge(&svc_expkey_cache);
+ cache_purge(nn->svc_expkey_cache);
cache_purge(nn->svc_export_cache);
}
@@ -1285,10 +1290,11 @@ nfsd_export_shutdown(struct net *net)
dprintk("nfsd: shutting down export module (net: %p).\n", net);
- cache_unregister_net(&svc_expkey_cache, net);
+ cache_unregister_net(nn->svc_expkey_cache, net);
cache_unregister_net(nn->svc_export_cache, net);
+ cache_destroy_net(nn->svc_expkey_cache, net);
cache_destroy_net(nn->svc_export_cache, net);
- svcauth_unix_purge();
+ svcauth_unix_purge(net);
dprintk("nfsd: export shutdown complete (net: %p).\n", net);
}
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index c1c6242942a9..9794c6c7d133 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -29,6 +29,7 @@ struct cld_net;
struct nfsd_net {
struct cld_net *cld_net;
+ struct cache_detail *svc_expkey_cache;
struct cache_detail *svc_export_cache;
};
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index ddb9f8787379..b14417740816 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -129,13 +129,14 @@ static int exports_open(struct inode *inode, struct file *file)
{
int err;
struct seq_file *seq;
+ struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
err = seq_open(file, &nfs_exports_op);
if (err)
return err;
seq = file->private_data;
- seq->private = &svc_export_cache;
+ seq->private = nn->svc_export_cache;
return 0;
}