__lookup_mnt

Name:d the first mount at @dentry on vfsmount @mnt.* call under rcu_read_lock()

Proto:struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)

Type:struct mount

Parameter:

Type	Parameter	Name
struct vfsmount *	mnt
struct dentry *	dentry

610

head = m_hash(mnt, dentry)

613

hlist_for_each_entry_rcu - iterate over rcu list of given type*@pos: the type * to use as a loop cursor.*@head: the head for your list.*@member: the name of the hlist_node within the struct.(p, head, mnt_hash)

614

If mnt == mnt && mnt_mountpoint == dentry Then Return p

616

Return NULL

**Caller**
Name	Describe
follow_dotdot_rcu
lookup_mnt	lookup_mnt - Return the first child mount mounted at path* "First" means first mounted chronologically
attach_recursive_mnt	@source_mnt : mount tree to be attached@nd : place the mount tree @source_mnt is attached@parent_nd : if non-null, detach the source_mnt from its parent and* store the parent mount and mountpoint dentry
propagate_mount_busy	heck if the mount 'mnt' can be unmounted successfully.@mnt: the mount to be checked for unmount NOTE: unmounting 'mnt' would naturally propagate to all* other mounts its parent propagates to.* Check if any of these mounts that do not have submounts
propagate_mount_unlock	Clear MNT_LOCKED when it can be shown to be safe.* mount_lock lock must be held for write
propagate_umount	llect all mounts that receive propagation from the mount in @list,* and return these additional mounts in the same list.@list: the list of mounts to be unmounted. vfsmount lock must be held for write

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