[XFS] Add a greedy allocation interface, allocating within a min/max size

range.

SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26803a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

fs/xfs/quota/xfs_qm.c

@@ -112,17 +112,16 @@ xfs_Gqm_init(void)
 {
 	xfs_dqhash_t	*udqhash, *gdqhash;
 	xfs_qm_t	*xqm;
-	uint		i, hsize, flags = KM_SLEEP | KM_MAYFAIL | KM_LARGE;
+	uint		i, hsize;
 
 	/*
 	 * Initialize the dquot hash tables.
 	 */
-	hsize = XFS_QM_HASHSIZE_HIGH;
-	while (!(udqhash = kmem_zalloc(hsize * sizeof(*udqhash), flags))) {
-		if ((hsize >>= 1) <= XFS_QM_HASHSIZE_LOW)
-			flags = KM_SLEEP;
-	}
-	gdqhash = kmem_zalloc(hsize * sizeof(*gdqhash), KM_SLEEP | KM_LARGE);
+	udqhash = kmem_zalloc_greedy(&hsize,
+				     XFS_QM_HASHSIZE_LOW, XFS_QM_HASHSIZE_HIGH,
+				     KM_SLEEP | KM_MAYFAIL | KM_LARGE);
+	gdqhash = kmem_zalloc(hsize, KM_SLEEP | KM_LARGE);
+	hsize /= sizeof(xfs_dqhash_t);
 	ndquot = hsize << 8;
 
 	xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP);