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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-11-24 01:34:49 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-04 04:52:36 +0100 |
| commit | afac7cba7ed31968a95e181dc25e204e45009ea8 (patch) | |
| tree | 282cf7da6bc3915093df622ebfcd39f44f6fd1cd /fs/pnode.h | |
| parent | vfs: new internal helper: mnt_has_parent(mnt) (diff) | |
| download | linux-afac7cba7ed31968a95e181dc25e204e45009ea8.tar.xz linux-afac7cba7ed31968a95e181dc25e204e45009ea8.zip | |
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.h | 2 |
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 */ |