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author | Ian Kent <ikent@redhat.com> | 2016-11-24 08:03:42 +1100 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-03 20:51:49 -0500 |
commit | 60359741473438f66fef7297d1fa2435640dbe79 (patch) | |
tree | 3316c740550e8bd1ddc441385517e28d96e5468e /include/linux/dcache.h | |
parent | cfaf86ab6ccdf0acf47ebe474a4a844114bc0e10 (diff) | |
download | op-kernel-dev-60359741473438f66fef7297d1fa2435640dbe79.zip op-kernel-dev-60359741473438f66fef7297d1fa2435640dbe79.tar.gz |
autofs: use path_has_submounts() to fix unreliable have_submount() checks
If an automount mount is clone(2)ed into a file system that is propagation
private, when it later expires in the originating namespace, subsequent
calls to autofs ->d_automount() for that dentry in the original namespace
will return ELOOP until the mount is umounted in the cloned namespace.
Now that a struct path is available where needed use path_has_submounts()
instead of have_submounts() so we don't get false positives when checking
if a dentry is a mount point or contains mounts in the current namespace.
Link: http://lkml.kernel.org/r/20161011053423.27645.91233.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 'include/linux/dcache.h')
0 files changed, 0 insertions, 0 deletions