diff options
| author |   Ian Kent <ikent@redhat.com> | 2016-11-24 08:03:41 +1100 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2016-12-03 20:51:35 -0500 |
| commit | c6609c0a1c34fc097152b28b496236625673924f (patch) | |
| tree | 864cfb55fd8727e2a475ca44dd8d7df5a8488005 /fs/autofs4/root.c | |
| parent | vfs: change d_manage() to take a struct path (diff) | |
| download | linux-dev-c6609c0a1c34fc097152b28b496236625673924f.tar.xz linux-dev-c6609c0a1c34fc097152b28b496236625673924f.zip | |
vfs: add path_is_mountpoint() helper
d_mountpoint() can only be used reliably to establish if a dentry is
not mounted in any namespace. It isn't aware of the possibility there
may be multiple mounts using a given dentry that may be in a different
namespace.
Add helper functions, path_is_mountpoint(), that checks if a struct path
is a mountpoint for this case.
Link: http://lkml.kernel.org/r/20161011053358.27645.9729.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions