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| author |   Ian Kent <ikent@redhat.com> | 2016-11-24 08:03:41 +1100 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2016-12-03 20:51:47 -0500 |
| commit | 01619491a5f0766014fe863c5ae480665436e7a2 (patch) | |
| tree | e9f8f4fcf30337b805c76f8fcc83baa517779359 /fs/autofs4/autofs_i.h | |
| parent | vfs: add path_is_mountpoint() helper (diff) | |
| download | linux-dev-01619491a5f0766014fe863c5ae480665436e7a2.tar.xz linux-dev-01619491a5f0766014fe863c5ae480665436e7a2.zip | |
vfs: add path_has_submounts()
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 the given dentry, possibly in a different
namespace.
Add function, path_has_submounts(), that checks is a struct path contains
mounts (or is a mountpoint itself) to handle this case.
Link: http://lkml.kernel.org/r/20161011053403.27645.55242.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 'fs/autofs4/autofs_i.h')
0 files changed, 0 insertions, 0 deletions