[XFS] pv 956240, author: nathans, rv: vapo - Minor fixes in

kmem_zalloc_greedy()

SGI-PV: 956240
SGI-Modid: xfs-linux-melb:xfs-kern:26983a
Signed-off-by: NVlad Apostolov <vapo@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

fs/xfs/linux-2.6/kmem.c

@@ -72,15 +72,20 @@ void *
 kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize,
 		   unsigned int __nocast flags)
 {
-	void	*ptr;
+	void		*ptr;
+	size_t		kmsize = maxsize;
+	unsigned int	kmflags = (flags & ~KM_SLEEP) | KM_NOSLEEP;
 
-	while (!(ptr = kmem_zalloc(maxsize, flags))) {
-		if ((maxsize >>= 1) <= minsize) {
-			maxsize = minsize;
-		 	flags = KM_SLEEP;
+	while (!(ptr = kmem_zalloc(kmsize, kmflags))) {
+		if ((kmsize <= minsize) && (flags & KM_NOSLEEP))
+			break;
+		if ((kmsize >>= 1) <= minsize) {
+			kmsize = minsize;
+			kmflags = flags;
 		}
 	}
-	*size = maxsize;
+	if (ptr)
+		*size = kmsize;
 	return ptr;
 }