Looback bugfix

• Next message: David S. Miller: "Re: [PATCH] inet_ecn.h [2.4.16/2.5.0]"
• Previous message: Richard Gooch: "Re: 2.5.1-pre5 not easy to boot with devfs"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

  Hello,

  I'm sending you a patch which should fix bug in loopback device - it
allows you to setup loopback /dev/loop0 -> /dev/loop0 with very unpleasant
(hard deadlock) results. The patch is against 2.4.16 but should apply well
against 2.5.0 too. Could oth of you apply the patch please?

                                                        Bye

                                                                Honza

--
Jan Kara <jack@suse.cz>
SuSE CR Labs
------- <cut> ---------
diff -ruX /home/jack/.kerndiffexclude linux-2.4.16/drivers/block/loop.c linux-2.4.16-loopfix/drivers/block/loop.c
--- linux-2.4.16/drivers/block/loop.c	Mon Nov 19 23:48:02 2001
+++ linux-2.4.16-loopfix/drivers/block/loop.c	Sat Dec  1 00:07:39 2001
@@ -640,6 +640,10 @@
 
 	if (S_ISBLK(inode->i_mode)) {
 		lo_device = inode->i_rdev;
+		if (lo_device == dev) {
+			error = -EBUSY;
+			goto out;
+		}
 	} else if (S_ISREG(inode->i_mode)) {
 		struct address_space_operations *aops = inode->i_mapping->a_ops;
 		/*
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

• Next message: David S. Miller: "Re: [PATCH] inet_ecn.h [2.4.16/2.5.0]"
• Previous message: Richard Gooch: "Re: 2.5.1-pre5 not easy to boot with devfs"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Fri Dec 07 2001 - 21:00:20 EST