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From: freeman.zhang1992@gmail.com (Freeman Zhang)
To: kernelnewbies@lists.kernelnewbies.org
Subject: how to deal with page
Date: Fri, 07 Mar 2014 10:34:18 +0800	[thread overview]
Message-ID: <5319302A.9030409@gmail.com> (raw)
In-Reply-To: <CAHPoDxKFR3Grn0gwQOAJqjBY6jm6hs-tLyzj2sCevsHW5Upo0Q@mail.gmail.com>

Hi,

 2014-03-06 17:20 ???:
> Hi. nowdays i am studing Transparent encryption in linux system. when
> reading file needs do_generic_file_read function decrpty file. but in
> do_generic_file_read Physical data using struct page ,how did i use
> page decrpty.
Maybe you need to do en/decryption in the address_space operations,
which is used with struct page. The do_generic_file_read will evoke the
page->mapping->a_ops->readpage, and the readpage is  one of the
address_space operations. So I guess that's what you want.
Hope this can help!



Regards,
Freeman Zhang

      reply	other threads:[~2014-03-07  2:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-06  9:20 how to deal with page 于运超
2014-03-07  2:34 ` Freeman Zhang [this message]

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