tree 18222526565a7fdf44aba30d2861c1f6b75516e3
parent d515e86e639890b33a09390d062b0831664f04a2
author Al Viro <viro@zeniv.linux.org.uk> 1274472664 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1274481072 -0400

clean DCACHE_CANT_MOUNT in d_delete()

We set the "it's dead, don't mount on it" flag _and_ do not remove it if
we turn the damn thing negative and leave it around.  And if it goes
positive afterwards, well...

Fortunately, there's only one place where that needs to be caught:
only d_delete() can turn the sucker negative without immediately freeing
it; all other places that can lead to ->d_iput() call are followed by
unconditionally freeing struct dentry in question.  So the fix is obvious:

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16014
Reported-by: Adam Tkac <vonsch@gmail.com>
Tested-by: Adam Tkac <vonsch@gmail.com>
Cc: <stable@kernel.org>         [2.6.34.x]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>