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Message-ID: <1e62d1370511071924u4e23c3fdjec82f1713ff8d131@mail.gmail.com>
Date: Tue, 8 Nov 2005 08:24:17 +0500
From: Fawad Lateef <fawadlateef@gmail.com>
To: "ext3crypt@comcast.net" <ext3crypt@comcast.net>
Subject: Re: Am I thinking correctly?
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <110720051724.6127.436F8DDF0006D246000017EF22007348309B9F979D0CCC9B980A@comcast.net>
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On 11/7/05, ext3crypt@comcast.net <ext3crypt@comcast.net> wrote:
>
> Kernel Version:  2.6.13
>
> The API will be used, but I am using a simple xor to test with.
>
> The data is getting written to disk, but NOT the buffer I'm sending to submit_bh().  It is writing the buffers from the page I copied???
>
> No messages.  I just do the following:
>
> mount the filesystem
> cd to it's root
> cp foo foo2
> sync
> (at this point everything looks fine)
>
> cd ..
> umount the filesystem
> mount the filesystem
> cd to it's root
> cat foo2 (which is now the wrong data)
>

Have you tried your code by writing the data with-out performing any
operation on data (like xor) ? This will tell you whether your
__block_write_full_page is working fine or not because you will get
exactly the same data as of the original file !

And are you also taking care of write operation other than
address_space_operations->writepages ? Because there is also
file_operations->write which ext3 is assgining do_sync_write
(http://sosdg.org/~coywolf/lxr/source/fs/ext3/file.c#L111), so are you
handling this too ?

> I'll attach the code tonight when I have access to it.
>

That will be much better !

And Please Don't do Top-Posting !

--
Fawad Lateef
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