tree 4986536b92acab05e0ea3faf39f12cdcb573ee0f
parent 1487385edb55a68a629cf3a30fc04958ad798df1
author Linus Torvalds <torvalds@linux-foundation.org> 1401552801 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1401552801 -0700

dcache: add missing lockdep annotation

lock_parent() very much on purpose does nested locking of dentries, and
is careful to maintain the right order (lock parent first).  But because
it didn't annotate the nested locking order, lockdep thought it might be
a deadlock on d_lock, and complained.

Add the proper annotation for the inner locking of the child dentry to
make lockdep happy.

Introduced by commit 046b961b45f9 ("shrink_dentry_list(): take parent's
->d_lock earlier").

Reported-and-tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>