Use WARN() in fs/proc/

[linux-2.6-omap-h63xx.git] / fs / proc / generic.c

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 0f3d97d41b0f9ffc03ba9002e95aaa59d53786c4..cb4096cc3fb7456f96a5a4e30dc1957e0707b10e 100644 (file)
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -597,6 +597,7 @@ static struct proc_dir_entry *__proc_create(struct proc_dir_entry **parent,
        ent->pde_users = 0;
        spin_lock_init(&ent->pde_unload_lock);
        ent->pde_unload_completion = NULL;
+       INIT_LIST_HEAD(&ent->pde_openers);
  out:
        return ent;
 }
@@ -641,6 +642,23 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
        return ent;
 }
 
+struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
+               struct proc_dir_entry *parent)
+{
+       struct proc_dir_entry *ent;
+
+       ent = __proc_create(&parent, name, S_IFDIR | S_IRUGO | S_IXUGO, 2);
+       if (ent) {
+               ent->data = net;
+               if (proc_register(parent, ent) < 0) {
+                       kfree(ent);
+                       ent = NULL;
+               }
+       }
+       return ent;
+}
+EXPORT_SYMBOL_GPL(proc_net_mkdir);
+
 struct proc_dir_entry *proc_mkdir(const char *name,
                struct proc_dir_entry *parent)
 {
@@ -675,9 +693,10 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
        return ent;
 }
 
-struct proc_dir_entry *proc_create(const char *name, mode_t mode,
-                                  struct proc_dir_entry *parent,
-                                  const struct file_operations *proc_fops)
+struct proc_dir_entry *proc_create_data(const char *name, mode_t mode,
+                                       struct proc_dir_entry *parent,
+                                       const struct file_operations *proc_fops,
+                                       void *data)
 {
        struct proc_dir_entry *pde;
        nlink_t nlink;
@@ -698,6 +717,7 @@ struct proc_dir_entry *proc_create(const char *name, mode_t mode,
        if (!pde)
                goto out;
        pde->proc_fops = proc_fops;
+       pde->data = data;
        if (proc_register(parent, pde) < 0)
                goto out_free;
        return pde;
@@ -770,15 +790,25 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent)
        spin_unlock(&de->pde_unload_lock);
 
 continue_removing:
+       spin_lock(&de->pde_unload_lock);
+       while (!list_empty(&de->pde_openers)) {
+               struct pde_opener *pdeo;
+
+               pdeo = list_first_entry(&de->pde_openers, struct pde_opener, lh);
+               list_del(&pdeo->lh);
+               spin_unlock(&de->pde_unload_lock);
+               pdeo->release(pdeo->inode, pdeo->file);
+               kfree(pdeo);
+               spin_lock(&de->pde_unload_lock);
+       }
+       spin_unlock(&de->pde_unload_lock);
+
        if (S_ISDIR(de->mode))
                parent->nlink--;
        de->nlink = 0;
-       if (de->subdir) {
-               printk(KERN_WARNING "%s: removing non-empty directory "
+       WARN(de->subdir, KERN_WARNING "%s: removing non-empty directory "
                        "'%s/%s', leaking at least '%s'\n", __func__,
                        de->parent->name, de->name, de->subdir->name);
-               WARN_ON(1);
-       }
        if (atomic_dec_and_test(&de->count))
                free_proc_entry(de);
 }