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

[David S. Miller]

   From: Andreas Dilger <[e-mail]>
   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'.