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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2014-08-18 15:09:26 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-08-30 18:31:41 -0400 |
| commit | 88b368f27a094277143d8ecd5a056116f6a41520 (patch) | |
| tree | 70dbec3575942bad615cab61ab9061f2b8228128 /fs/namespace.c | |
| parent | Linux 3.17-rc2 (diff) | |
| download | linux-dev-88b368f27a094277143d8ecd5a056116f6a41520.tar.xz linux-dev-88b368f27a094277143d8ecd5a056116f6a41520.zip | |
get rid of propagate_umount() mistakenly treating slaves as busy.
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.
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index a01c7730e9af..3273177873f0 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 */ |