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authorAl Viro <viro@zeniv.linux.org.uk>2011-11-24 22:00:28 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:57:04 -0500
commit643822b41e5e0f133438883b0be574cdaf168a2a (patch)
tree1b9bbeace5c1078ae6e893e2f826b724411d3a07 /fs/namespace.c
parent676da58df740f325034b8641311413c2393588e1 (diff)
vfs: spread struct mount - is_path_reachable
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index ced3aa53fb3..b117d94fcdc 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2559,21 +2559,21 @@ out_type:
*
* namespace_sem or vfsmount_lock is held
*/
-bool is_path_reachable(struct vfsmount *mnt, struct dentry *dentry,
+bool is_path_reachable(struct mount *mnt, struct dentry *dentry,
const struct path *root)
{
- while (mnt != root->mnt && mnt_has_parent(real_mount(mnt))) {
- dentry = mnt->mnt_mountpoint;
- mnt = mnt->mnt_parent;
+ while (&mnt->mnt != root->mnt && mnt_has_parent(mnt)) {
+ dentry = mnt->mnt.mnt_mountpoint;
+ mnt = real_mount(mnt->mnt.mnt_parent);
}
- return mnt == root->mnt && is_subdir(dentry, root->dentry);
+ return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);
}
int path_is_under(struct path *path1, struct path *path2)
{
int res;
br_read_lock(vfsmount_lock);
- res = is_path_reachable(path1->mnt, path1->dentry, path2);
+ res = is_path_reachable(real_mount(path1->mnt), path1->dentry, path2);
br_read_unlock(vfsmount_lock);
return res;
}
@@ -2659,7 +2659,7 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
if (!mnt_has_parent(new_mnt))
goto out4; /* not attached */
/* make sure we can reach put_old from new_root */
- if (!is_path_reachable(old.mnt, old.dentry, &new))
+ if (!is_path_reachable(real_mount(old.mnt), old.dentry, &new))
goto out4;
br_write_lock(vfsmount_lock);
detach_mnt(new_mnt, &parent_path);