vfs: spread struct mount - clone_mnt/copy_tree result

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2011-11-24 20:55:08 -05:00
parent 0f0afb1dcf
commit cb338d06e9
3 changed files with 30 additions and 26 deletions

View File

@ -221,7 +221,8 @@ static struct vfsmount *get_source(struct vfsmount *dest,
int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
struct vfsmount *source_mnt, struct list_head *tree_list)
{
struct vfsmount *m, *child;
struct vfsmount *m;
struct mount *child;
int ret = 0;
struct vfsmount *prev_dest_mnt = dest_mnt;
struct vfsmount *prev_src_mnt = source_mnt;
@ -245,23 +246,23 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
}
if (is_subdir(dest_dentry, m->mnt_root)) {
mnt_set_mountpoint(m, dest_dentry, child);
list_add_tail(&child->mnt_hash, tree_list);
mnt_set_mountpoint(m, dest_dentry, &child->mnt);
list_add_tail(&child->mnt.mnt_hash, tree_list);
} else {
/*
* This can happen if the parent mount was bind mounted
* on some subdirectory of a shared/slave mount.
*/
list_add_tail(&child->mnt_hash, &tmp_list);
list_add_tail(&child->mnt.mnt_hash, &tmp_list);
}
prev_dest_mnt = m;
prev_src_mnt = child;
prev_src_mnt = &child->mnt;
}
out:
br_write_lock(vfsmount_lock);
while (!list_empty(&tmp_list)) {
child = list_first_entry(&tmp_list, struct vfsmount, mnt_hash);
umount_tree(child, 0, &umount_list);
child = list_first_entry(&tmp_list, struct mount, mnt.mnt_hash);
umount_tree(&child->mnt, 0, &umount_list);
}
br_write_unlock(vfsmount_lock);
release_mounts(&umount_list);