The last change to alloc_layer in lib/idr.c unnecessarily complicates
the code and depending on the definition of spin_unlock will cause worse
code to be generated than necessary.  The following patch should improve
the situation.
Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>