tree 446772602e5944075a6c614db05dd06681f3f3d8
parent bb20c18db6fbb5e6ba499c76473a487d35073467
author Nick Piggin <npiggin@kernel.dk> 1294972579 +0000
committer Nick Piggin <npiggin@hera.kernel.org> 1294972579 +0000

fs: fix dropping of rcu-walk from force_reval_path

As J. R. Okajima noted, force_reval_path passes in the same dentry to
d_revalidate as the one in the nameidata structure (other callers pass in a
child), so the locking breaks. This can oops with a chrooted nfs mount, for
example. Similarly there can be other problems with revalidating a dentry
which is already in nameidata of the path walk.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>