diff options
Diffstat (limited to 'fs/nfs/sysfs.c')
| -rw-r--r-- | fs/nfs/sysfs.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c index c489496b5659..a6f740366963 100644 --- a/fs/nfs/sysfs.c +++ b/fs/nfs/sysfs.c @@ -79,7 +79,12 @@ static ssize_t nfs_netns_identifier_show(struct kobject *kobj, struct nfs_netns_client *c = container_of(kobj, struct nfs_netns_client, kobject); - return scnprintf(buf, PAGE_SIZE, "%s\n", c->identifier); + ssize_t ret; + + rcu_read_lock(); + ret = scnprintf(buf, PAGE_SIZE, "%s\n", rcu_dereference(c->identifier)); + rcu_read_unlock(); + return ret; } /* Strip trailing '\n' */ @@ -107,7 +112,7 @@ static ssize_t nfs_netns_identifier_store(struct kobject *kobj, p = kmemdup_nul(buf, len, GFP_KERNEL); if (!p) return -ENOMEM; - old = xchg(&c->identifier, p); + old = rcu_dereference_protected(xchg(&c->identifier, (char __rcu *)p), 1); if (old) { synchronize_rcu(); kfree(old); @@ -121,7 +126,7 @@ static void nfs_netns_client_release(struct kobject *kobj) struct nfs_netns_client, kobject); - kfree(c->identifier); + kfree(rcu_dereference_raw(c->identifier)); kfree(c); } @@ -137,10 +142,11 @@ static struct attribute *nfs_netns_client_attrs[] = { &nfs_netns_client_id.attr, NULL, }; +ATTRIBUTE_GROUPS(nfs_netns_client); static struct kobj_type nfs_netns_client_type = { .release = nfs_netns_client_release, - .default_attrs = nfs_netns_client_attrs, + .default_groups = nfs_netns_client_groups, .sysfs_ops = &kobj_sysfs_ops, .namespace = nfs_netns_client_namespace, }; |