split __lookup_mnt() in two functions
Instead of passing the direction as argument (and checking it on every
step through the hash chain), just have separate __lookup_mnt() and
__lookup_mnt_last(). And use the standard iterators...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/pnode.c b/fs/pnode.c
index 58933fd..c7221bb 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -310,7 +310,7 @@
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
- child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint, 0);
+ child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint);
if (child && list_empty(&child->mnt_mounts) &&
(ret = do_refcount_check(child, 1)))
break;
@@ -332,8 +332,8 @@
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
- struct mount *child = __lookup_mnt(&m->mnt,
- mnt->mnt_mountpoint, 0);
+ struct mount *child = __lookup_mnt_last(&m->mnt,
+ mnt->mnt_mountpoint);
/*
* umount the child only if the child has no
* other children