linux-kernel - [PATCH v3 0/4] introduce sg_pcopy_from_buffer() and sg_pcopy_to

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Message-Id: <1371991061-19437-1-git-send-email-akinobu.mita@gmail.com>
Date:	Sun, 23 Jun 2013 21:37:37 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>, Tejun Heo <tj@...nel.org>,
	Imre Deak <imre.deak@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	Douglas Gilbert <dgilbert@...erlog.com>,
	linux-scsi@...r.kernel.org
Subject: [PATCH v3 0/4] introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer()

This patch set introduces sg_pcopy_from_buffer() and sg_pcopy_to_buffer(),
which copy data between a linear buffer and an SG list.

The only difference between sg_pcopy_{from,to}_buffer() and
sg_copy_{from,to}_buffer() is an additional argument that specifies
the number of bytes to skip the SG list before copying.

The main reason for introducing these functions is to fix a problem
in scsi_debug module.  And there is a local function in crypto/talitos
module, which can be replaced by sg_pcopy_to_buffer().

* Changes from v2
- Add Acked-by line
- Rename sg_miter_seek() to sg_miter_skip()
- Remove the restriction on when sg_miter_skip() can be called

* Changes from v1
- Separate the change that factors out sg_miter_get_next_page() from
  the patch "introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer()"
- Add function comment for internal function sg_miter_seek()
- Simplify the assignment of sdb->resid in fill_from_dev_buffer() in
  scsi_debug

Akinobu Mita (4):
  lib/scatterlist: factor out sg_miter_get_next_page() from
    sg_miter_next()
  lib/scatterlist: introduce sg_pcopy_from_buffer() and
    sg_pcopy_to_buffer()
  crypto: talitos: use sg_pcopy_to_buffer()
  scsi_debug: fix do_device_access() with wrap around range

 drivers/crypto/talitos.c    |  60 +--------------------
 drivers/scsi/scsi_debug.c   |  48 +++++++++++++----
 include/linux/scatterlist.h |   5 ++
 lib/scatterlist.c           | 127 +++++++++++++++++++++++++++++++++++++-------
 4 files changed, 150 insertions(+), 90 deletions(-)

Cc: Tejun Heo <tj@...nel.org>
Cc: Imre Deak <imre.deak@...el.com>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: linux-crypto@...r.kernel.org
Cc: "James E.J. Bottomley" <JBottomley@...allels.com>
Cc: Douglas Gilbert <dgilbert@...erlog.com>
Cc: linux-scsi@...r.kernel.org

-- 
1.8.1.4

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