Re: [PATCH] Possible EXT2 File System Corruption in Kernel 2.4

David S. Miller (davem@redhat.com)
Mon, 20 May 2002 21:02:20 -0700 (PDT)


From: Andreas Dilger <adilger@clusterfs.com>
Date: Mon, 20 May 2002 21:57:02 -0600

It is likely that block is being set as -EPERM or something like that,
but I'm not sure.

Interesting analysis.

However, I walked over this code a few times and I cannot
find a way that -EPERM can land there.

What might be happening, instead, is that due to some bug
in ext2_alloc_block we end up with -1 as the answer. It
would be useful to add some debugging there to see if the
return value 'j' is ever -1 when we set *err to '0'.
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