diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-08-18 15:09:26 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-17 09:19:22 -0700 |
| commit | c532b9ce36b10a5b34def0870f5bd7dafc4b1384 (patch) | |
| tree | c8d12d90719a264e1cdfe04c73e0566db1d1b3c7 /fs | |
| parent | 93927a247ca105482a9dbaf58a739c5db2546990 (diff) | |
get rid of propagate_umount() mistakenly treating slaves as busy.
commit 88b368f27a094277143d8ecd5a056116f6a41520 upstream.
The check in __propagate_umount() ("has somebody explicitly mounted
something on that slave?") is done *before* taking the already doomed
victims out of the child lists.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namespace.c | 4 | ||||
| -rw-r--r-- | fs/pnode.c | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 9954f6032546..7af0433b79bc 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1253,6 +1253,9 @@ void umount_tree(struct mount *mnt, int how) hlist_add_head(&p->mnt_hash, &tmp_list); } + hlist_for_each_entry(p, &tmp_list, mnt_hash) + list_del_init(&p->mnt_child); + if (how) propagate_umount(&tmp_list); @@ -1263,7 +1266,6 @@ void umount_tree(struct mount *mnt, int how) p->mnt_ns = NULL; if (how < 2) p->mnt.mnt_flags |= MNT_SYNC_UMOUNT; - list_del_init(&p->mnt_child); if (mnt_has_parent(p)) { put_mountpoint(p->mnt_mp); /* move the reference to mountpoint into ->mnt_ex_mountpoint */ diff --git a/fs/pnode.c b/fs/pnode.c index a364a704333b..b7f831089500 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -381,6 +381,7 @@ static void __propagate_umount(struct mount *mnt) * other children */ if (child && list_empty(&child->mnt_mounts)) { + list_del_init(&child->mnt_child); hlist_del_init_rcu(&child->mnt_hash); hlist_add_before_rcu(&child->mnt_hash, &mnt->mnt_hash); } |