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author | Eric W. Biederman <ebiederm@xmission.com> | 2014-01-20 23:26:15 (GMT) |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-01-26 13:26:42 (GMT) |
commit | 260a459d2e39761fbd39803497205ce1690bc7b1 (patch) | |
tree | 33b18a2cbb1bde334690948c43a107f419be981b /fs/nilfs2/mdt.c | |
parent | 9fe55eea7e4b444bafc42fa0000cc2d1d2847275 (diff) | |
download | linux-260a459d2e39761fbd39803497205ce1690bc7b1.tar.xz |
vfs: Is mounted should be testing mnt_ns for NULL or error.
A bug was introduced with the is_mounted helper function in
commit f7a99c5b7c8bd3d3f533c8b38274e33f3da9096e
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat Jun 9 00:59:08 2012 -0400
get rid of ->mnt_longterm
it's enough to set ->mnt_ns of internal vfsmounts to something
distinct from all struct mnt_namespace out there; then we can
just use the check for ->mnt_ns != NULL in the fast path of
mntput_no_expire()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The intent was to test if the real_mount(vfsmount)->mnt_ns was
NULL_OR_ERR but the code is actually testing real_mount(vfsmount)
and always returning true.
The result is d_absolute_path returning paths it should be hiding.
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nilfs2/mdt.c')
0 files changed, 0 insertions, 0 deletions