diff options
| -rw-r--r-- | net/sunrpc/cache.c | 99 |
1 files changed, 54 insertions, 45 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 365586a999ea..f41a7cc4cf62 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -290,44 +290,63 @@ static const struct file_operations cache_flush_operations; static void do_cache_clean(struct work_struct *work); static DECLARE_DELAYED_WORK(cache_cleaner, do_cache_clean); -void cache_register(struct cache_detail *cd) +static void remove_cache_proc_entries(struct cache_detail *cd) { - cd->proc_ent = proc_mkdir(cd->name, proc_net_rpc); - if (cd->proc_ent) { - struct proc_dir_entry *p; - cd->proc_ent->owner = cd->owner; - cd->channel_ent = cd->content_ent = NULL; + if (cd->proc_ent == NULL) + return; + if (cd->flush_ent) + remove_proc_entry("flush", cd->proc_ent); + if (cd->channel_ent) + remove_proc_entry("channel", cd->proc_ent); + if (cd->content_ent) + remove_proc_entry("content", cd->proc_ent); + cd->proc_ent = NULL; + remove_proc_entry(cd->name, proc_net_rpc); +} - p = create_proc_entry("flush", S_IFREG|S_IRUSR|S_IWUSR, - cd->proc_ent); - cd->flush_ent = p; - if (p) { - p->proc_fops = &cache_flush_operations; - p->owner = cd->owner; - p->data = cd; - } +static void create_cache_proc_entries(struct cache_detail *cd) +{ + struct proc_dir_entry *p; - if (cd->cache_request || cd->cache_parse) { - p = create_proc_entry("channel", S_IFREG|S_IRUSR|S_IWUSR, - cd->proc_ent); - cd->channel_ent = p; - if (p) { - p->proc_fops = &cache_file_operations; - p->owner = cd->owner; - p->data = cd; - } - } - if (cd->cache_show) { - p = create_proc_entry("content", S_IFREG|S_IRUSR|S_IWUSR, - cd->proc_ent); - cd->content_ent = p; - if (p) { - p->proc_fops = &content_file_operations; - p->owner = cd->owner; - p->data = cd; - } - } + cd->proc_ent = proc_mkdir(cd->name, proc_net_rpc); + if (cd->proc_ent == NULL) + return; + cd->proc_ent->owner = cd->owner; + cd->channel_ent = cd->content_ent = NULL; + + p = create_proc_entry("flush", S_IFREG|S_IRUSR|S_IWUSR, cd->proc_ent); + cd->flush_ent = p; + if (p == NULL) + return; + p->proc_fops = &cache_flush_operations; + p->owner = cd->owner; + p->data = cd; + + if (cd->cache_request || cd->cache_parse) { + p = create_proc_entry("channel", S_IFREG|S_IRUSR|S_IWUSR, + cd->proc_ent); + cd->channel_ent = p; + if (p == NULL) + return; + p->proc_fops = &cache_file_operations; + p->owner = cd->owner; + p->data = cd; + } + if (cd->cache_show) { + p = create_proc_entry("content", S_IFREG|S_IRUSR|S_IWUSR, + cd->proc_ent); + cd->content_ent = p; + if (p == NULL) + return; + p->proc_fops = &content_file_operations; + p->owner = cd->owner; + p->data = cd; } +} + +void cache_register(struct cache_detail *cd) +{ + create_cache_proc_entries(cd); rwlock_init(&cd->hash_lock); INIT_LIST_HEAD(&cd->queue); spin_lock(&cache_list_lock); @@ -358,17 +377,7 @@ void cache_unregister(struct cache_detail *cd) list_del_init(&cd->others); write_unlock(&cd->hash_lock); spin_unlock(&cache_list_lock); - if (cd->proc_ent) { - if (cd->flush_ent) - remove_proc_entry("flush", cd->proc_ent); - if (cd->channel_ent) - remove_proc_entry("channel", cd->proc_ent); - if (cd->content_ent) - remove_proc_entry("content", cd->proc_ent); - - cd->proc_ent = NULL; - remove_proc_entry(cd->name, proc_net_rpc); - } + remove_cache_proc_entries(cd); if (list_empty(&cache_list)) { /* module must be being unloaded so its safe to kill the worker */ cancel_delayed_work_sync(&cache_cleaner); |