commit 1191a2bdf012147c33e5fa95255974a3f7bf6e2f
author Miklos Szeredi <mszeredi@suse.cz> Thu Sep 05 11:44:39 2013 +0200
committer Al Viro <viro@zeniv.linux.org.uk> Thu Sep 05 16:23:51 2013 -0400
tree 7a048ca9a96611474270e6a158ee0f14496d8572
parent ba81238076d368b9bb78a7fbf6c621b49d4d602f

gfs2: use check_submounts_and_drop()

Do have_submounts(), shrink_dcache_parent() and d_drop() atomically.

check_submounts_and_drop() can deal with negative dentries and
non-directories as well.

Non-directories can also be mounted on.  And just like directories we don't
want these to disappear with invalidation.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>