X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fidr.c;h=1c4f9281f412db349d3a80e0ed51e51f6102027c;hb=refs%2Ftags%2Fv2.6.28-omap1;hp=7a785a0c2ea0fccead72653a0fd66af5111888ea;hpb=437f2f91d6597c67662f847d9ed4c99cb3c440cd;p=linux-2.6-omap-h63xx.git

diff --git a/lib/idr.c b/lib/idr.c
index 7a785a0c2ea..1c4f9281f41 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -220,8 +220,14 @@ build_up:
 	 */
 	while ((layers < (MAX_LEVEL - 1)) && (id >= (1 << (layers*IDR_BITS)))) {
 		layers++;
-		if (!p->count)
+		if (!p->count) {
+			/* special case: if the tree is currently empty,
+			 * then we grow the tree by moving the top node
+			 * upwards.
+			 */
+			p->layer++;
 			continue;
+		}
 		if (!(new = get_from_free_list(idp))) {
 			/*
 			 * The allocation failed.  If we built part of