[PATCH-v3.14.y 0/8] Stable backport for dcache shrink list corruption

["Nicholas A. Bellinger" <nab@linux-iscsi.org>]

From: Nicholas Bellinger <nab@linux-iscsi.org>

Hi Greg-KH, Al, & Co,

So I've recently been repeatedly hitting the same dcache shrink list
corruption bug on v3.14.47 that has been addressed in >= v3.15 code,
but it appears only one of the fixes:

   commit 22213318af7ae265bc6cd8aef2febbc2d69a2440
   Author: Al Viro <viro@zeniv.linux.org.uk>
   Date:   Sat Apr 19 12:30:58 2014 -0400

       fix races between __d_instantiate() and checks of dentry flags

actually made it into v3.14.y code.

The final set of patches from Al, along with the original thread is here:

  https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg637332.html

The series cherry-picked clean into v3.14.y, with the minor exception
of needing to use the older dentry->d_child in __dentry_kill(), instead
of the newer dentry->d_u.d_child present in >= v3.15.y.

If there are no objections and/or concerns from Al, please consider
queueing this series to address the bug for other folks still using
v3.14.y code.

Thank you,

--nab

Al Viro (7):
  fold d_kill() and d_free()
  fold try_prune_one_dentry()
  new helper: dentry_free()
  expand the call of dentry_lru_del() in dentry_kill()
  dentry_kill(): don't try to remove from shrink list
  don't remove from shrink list in select_collect()
  more graceful recovery in umount_collect()

Miklos Szeredi (1):
  dcache: don't need rcu in shrink_dentry_list()

 fs/dcache.c            | 316 ++++++++++++++++---------------------------------
 include/linux/dcache.h |   2 +
 2 files changed, 103 insertions(+), 215 deletions(-)

-- 
1.8.5.3