Re: [PATCH] Fix shrink_dcache_parent() against shrink_dcache_memory() race (3rd updated patch)]

[Jan Blunck <jblunck@suse.de>]

On Mon, Mar 13, Neil Brown wrote:

> No you don't.

Err, you are right. But this brings a new idea to my mind: why don't we use
s_umount to prevent umounting while we prune one dentry? Something like:

  if (down_read_trylock()) {
    if (s_root)
      prune_one_dentry()
    up_read()
  }
  // else just skip it

So maybe our prunes counter isn't the only way to go. Comments?

Regards,
	Jan

-- 
Jan Blunck                                               jblunck@suse.de
SuSE LINUX AG - A Novell company
Maxfeldstr. 5                                          +49-911-74053-608
D-90409 Nürnberg                                      http://www.suse.de
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