diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-12-23 04:12:07 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2015-04-03 04:34:19 +0300 |
| commit | 411a938b5abc9cb126c41cccf5975ae464fe0f3e (patch) | |
| tree | 730e8410fbeb2ec8190b9b2352abf80ffd56f0ce /fs/pnode.c | |
| parent | 590ce4bcbfb4e0462a720a4ad901e84416080bba (diff) | |
| download | linux-411a938b5abc9cb126c41cccf5975ae464fe0f3e.tar.xz | |
mnt: Delay removal from the mount hash.
- Modify __lookup_mnt_hash_last to ignore mounts that have MNT_UMOUNTED set.
- Don't remove mounts from the mount hash table in propogate_umount
- Don't remove mounts from the mount hash table in umount_tree before
the entire list of mounts to be umounted is selected.
- Remove mounts from the mount hash table as the last thing that
happens in the case where a mount has a parent in umount_tree.
Mounts without parents are not hashed (by definition).
This paves the way for delaying removal from the mount hash table even
farther and fixing the MNT_LOCKED vs MNT_DETACH issue.
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/pnode.c')
| -rw-r--r-- | fs/pnode.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/pnode.c b/fs/pnode.c index ac3aa0d43b90..c27ae38ee250 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -383,7 +383,6 @@ static void __propagate_umount(struct mount *mnt) */ if (child && list_empty(&child->mnt_mounts)) { list_del_init(&child->mnt_child); - hlist_del_init_rcu(&child->mnt_hash); child->mnt.mnt_flags |= MNT_UMOUNT; list_move_tail(&child->mnt_list, &mnt->mnt_list); } |