lustre/kernel_patches/patches/dcache_refcount_debug.patch

   1 --- ./fs/dcache.c.orig  2004-01-30 14:54:45.000000000 -0700
   2 +++ ./fs/dcache.c       2004-02-20 14:49:18.000000000 -0700
   3 @@ -348,8 +348,20 @@
   4                 dentry_stat.nr_unused--;
   5
   6                 /* Unused dentry with a count? */
   7 -               if (atomic_read(&dentry->d_count))
   8 +               if (atomic_read(&dentry->d_count)) {
   9 +                       struct inode *inode = dentry->d_inode;
  10 +                       printk(KERN_CRIT "dentry %*s %p->%lu/%u(%p/%s) ct %d\n",
  11 +                              dentry->d_name.len, dentry->d_name.name, dentry,
  12 +                              inode ? inode->i_ino : 0,
  13 +                              inode ? inode->i_generation : 0, inode,
  14 +                              inode ? inode->i_sb ?
  15 +                                       inode->i_sb->s_type->name : "" : "",
  16 +                              atomic_read(&dentry->d_count));
  17 +                       spin_unlock(&dcache_lock);
  18 +                       set_task_state(current, TASK_UNINTERRUPTIBLE);
  19 +                       schedule();
  20                         BUG();
  21 +               }
  22
  23                 prune_one_dentry(dentry);
  24                 if (!--count)