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| author | Eric W. Biederman | 2014-12-23 01:30:08 +0100 |
|---|---|---|
| committer | Eric W. Biederman | 2015-04-03 03:34:18 +0200 |
| commit | 590ce4bcbfb4e0462a720a4ad901e84416080bba (patch) | |
| tree | e5597263904eda7b9e869e57851c6f5dd6737e47 /fs/namespace.c | |
| parent | mnt: In umount_tree reuse mnt_list instead of mnt_hash (diff) | |
| download | kernel-qcow2-linux-590ce4bcbfb4e0462a720a4ad901e84416080bba.tar.gz kernel-qcow2-linux-590ce4bcbfb4e0462a720a4ad901e84416080bba.tar.xz kernel-qcow2-linux-590ce4bcbfb4e0462a720a4ad901e84416080bba.zip | |
mnt: Add MNT_UMOUNT flag
In some instances it is necessary to know if the the unmounting
process has begun on a mount. Add MNT_UMOUNT to make that reliably
testable.
This fix gets used in fixing locked mounts in MNT_DETACH
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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 54cbef129f4a..d1708147eb45 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1331,8 +1331,10 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how) struct mount *p; /* Gather the mounts to umount */ - for (p = mnt; p; p = next_mnt(p, mnt)) + for (p = mnt; p; p = next_mnt(p, mnt)) { + p->mnt.mnt_flags |= MNT_UMOUNT; list_move(&p->mnt_list, &tmp_list); + } /* Hide the mounts from lookup_mnt and mnt_mounts */ list_for_each_entry(p, &tmp_list, mnt_list) { |