Re: 2.4.4-pre3: lvm.c patch results in "hanging" mount or swapon

[Jens Axboe <axboe@suse.de>]

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On Sun, Apr 15 2001, Arjan Filius wrote:
> Hello,
> 
> While trying kernel 2.4.4-pre3 i found a "hanging" swapon (my swap is on
> LVM), same effect for "mount -a". 2.4.3 works properly.
> 
> I found ./drivers/md/lvm.c is patched, and restoring the lvm.c from 2.4.3
> resulted in normal operation.
> 
> I Found LVM/0.9.1_beta7 makes some notes about the patch, so i tried that
> (beta7), but no luck, only 2.4.3:lvm.c worked ok.

Small buglet in the buffer_IO_error out path, I maybe that's it...

-- 
Jens Axboe


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--- /opt/kernel/linux-2.4.4-pre3/drivers/md/lvm.c	Sun Apr 15 16:24:13 2001
+++ drivers/md/lvm.c	Sun Apr 15 16:23:36 2001
@@ -1675,8 +1675,10 @@
 			       struct buffer_head *bh)
 {
 	int ret = lvm_map(bh, rw);
-	if (ret < 0)
+	if (ret < 0) {
+		ret = 0;
 		buffer_IO_error(bh);
+	}
 	return ret;
 }