2.4.25 MD RAID 1 driver - memory leak?

[Mark Bellon <mbellon@mvista.com>]

If I'm reading things correctly I believe there is a memory leak in the 
RAID 1 driver. A patch is attached for the fix.

The end_sync_read function forwards the read operation (r1_bh) that 
completed by the raid1_reschedule_retry function. The r1_bh->cmd value 
is SPECIAL. If the R1BH_Uptodate bit is not set a message is printed and 
md_done_sync is called - but raid1_free_buf is not called. Look a few 
lines above at the "!sum_bhs" case for comparison.

mark

--- raid1.c.orig	2004-03-23 16:09:48.000000000 -0700
+++ raid1.c	2004-03-23 16:09:18.000000000 -0700
@@ -1252,6 +1252,7 @@
 
 				printk (IO_ERROR, partition_name(bh->b_dev), bh->b_blocknr);
 				md_done_sync(mddev, bh->b_size>>9, 0);
+				raid1_free_buf(r1_bh);
 			}
 
 			break;