Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

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

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 39f3d65190353cf08604a8765ed47946f1cf6b8e..8d49838e5554bd96e5b9106aafd6f03383cba890 100644 (file)
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -374,9 +374,16 @@ static int proc_delete_dentry(struct dentry * dentry)
        return 1;
 }
 
+static int proc_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
+{
+       d_drop(dentry);
+       return 0;
+}
+
 static struct dentry_operations proc_dentry_operations =
 {
        .d_delete       = proc_delete_dentry,
+       .d_revalidate   = proc_revalidate_dentry,
 };
 
 /*
@@ -397,8 +404,11 @@ struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nam
                        if (de->namelen != dentry->d_name.len)
                                continue;
                        if (!memcmp(dentry->d_name.name, de->name, de->namelen)) {
-                               unsigned int ino = de->low_ino;
+                               unsigned int ino;
 
+                               if (de->shadow_proc)
+                                       de = de->shadow_proc(current, de);
+                               ino = de->low_ino;
                                de_get(de);
                                spin_unlock(&proc_subdir_lock);
                                error = -EINVAL;
@@ -585,6 +595,7 @@ static struct proc_dir_entry *proc_create(struct proc_dir_entry **parent,
        ent->namelen = len;
        ent->mode = mode;
        ent->nlink = nlink;
+       atomic_set(&ent->count, 1);
        ent->pde_users = 0;
        spin_lock_init(&ent->pde_unload_lock);
        ent->pde_unload_completion = NULL;
@@ -682,7 +693,6 @@ void free_proc_entry(struct proc_dir_entry *de)
 
 /*
  * Remove a /proc entry and free it if it's not currently in use.
- * If it is in use, we set the 'deleted' flag.
  */
 void remove_proc_entry(const char *name, struct proc_dir_entry *parent)
 {
@@ -731,13 +741,8 @@ continue_removing:
                        parent->nlink--;
                de->nlink = 0;
                WARN_ON(de->subdir);
-               if (!atomic_read(&de->count))
+               if (atomic_dec_and_test(&de->count))
                        free_proc_entry(de);
-               else {
-                       de->deleted = 1;
-                       printk("remove_proc_entry: %s/%s busy, count=%d\n",
-                               parent->name, de->name, atomic_read(&de->count));
-               }
                break;
        }
        spin_unlock(&proc_subdir_lock);