Use block layer predefined function.

Signed-off-by: Jan Kara <jack@suse.cz>

diff -rupX /home/jack/.kerndiffexclude linux-2.6.12-1-forgetfix/fs/hfsplus/super.c linux-2.6.12-2-ll_rw_block-fix/fs/hfsplus/super.c
--- linux-2.6.12-1-forgetfix/fs/hfsplus/super.c	2005-06-28 13:26:18.000000000 +0200
+++ linux-2.6.12-2-ll_rw_block-fix/fs/hfsplus/super.c	2005-07-09 01:52:10.000000000 +0200
@@ -217,8 +217,7 @@ static void hfsplus_put_super(struct sup
 		vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_UNMNT);
 		vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_INCNSTNT);
 		mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
-		ll_rw_block(WRITE, 1, &HFSPLUS_SB(sb).s_vhbh);
-		wait_on_buffer(HFSPLUS_SB(sb).s_vhbh);
+		sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
 	}
 
 	hfs_btree_close(HFSPLUS_SB(sb).cat_tree);
@@ -415,8 +414,7 @@ static int hfsplus_fill_super(struct sup
 	vhdr->attributes &= cpu_to_be32(~HFSPLUS_VOL_UNMNT);
 	vhdr->attributes |= cpu_to_be32(HFSPLUS_VOL_INCNSTNT);
 	mark_buffer_dirty(HFSPLUS_SB(sb).s_vhbh);
-	ll_rw_block(WRITE, 1, &HFSPLUS_SB(sb).s_vhbh);
-	wait_on_buffer(HFSPLUS_SB(sb).s_vhbh);
+	sync_dirty_buffer(HFSPLUS_SB(sb).s_vhbh);
 
 	if (!HFSPLUS_SB(sb).hidden_dir) {
 		printk("HFS+: create hidden dir...\n");