op-kernel-dev - Development kernel branch for OpenPOWER systems

	Commit message (Collapse)	Author	Age	Files	Lines
*	vfs: new internal helper: mnt_has_parent(mnt)	Al Viro	2012-01-03	1	-0/+6
	vfsmounts have ->mnt_parent pointing either to a different vfsmount or to itself; it's never NULL and termination condition in loops traversing the tree towards root is mnt == mnt->mnt_parent. At least one place (see the next patch) is confused about what's going on; let's add an explicit helper checking it right way and use it in all places where we need it. Not that there had been too many, but... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>