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authorAl Viro <viro@zeniv.linux.org.uk>2011-11-23 19:34:49 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:52:36 -0500
commitafac7cba7ed31968a95e181dc25e204e45009ea8 (patch)
tree282cf7da6bc3915093df622ebfcd39f44f6fd1cd /fs/pnode.h
parentb2dba1af3c4157040303a76d25216b1713d333d0 (diff)
downloadkernel-afac7cba7ed31968a95e181dc25e204e45009ea8.tar.gz
vfs: more mnt_parent cleanups
a) mount --move is checking that ->mnt_parent is non-NULL before looking if that parent happens to be shared; ->mnt_parent is never NULL and it's not even an misspelled !mnt_has_parent() b) pivot_root open-codes is_path_reachable(), poorly. c) so does path_is_under(), while we are at it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pnode.h')
-rw-r--r--fs/pnode.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/pnode.h b/fs/pnode.h
index 7f0c13ae9484..723399e76134 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -42,4 +42,6 @@ void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
void release_mounts(struct list_head *);
void umount_tree(struct vfsmount *, int, struct list_head *);
struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
+bool is_path_reachable(struct vfsmount *, struct dentry *,
+ const struct path *root);
#endif /* _LINUX_PNODE_H */