All of lore.kernel.org
 help / color / mirror / Atom feed
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]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=5319302A.9030409@gmail.com \
    --to=freeman.zhang1992@gmail.com \
    --cc=kernelnewbies@lists.kernelnewbies.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.