[PATCH v3 0/4] introduce sg_pcopy_from_buffer() and sg_pcopy_to_buffer()

[Akinobu Mita]

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@xxxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
Cc: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
Cc: linux-scsi@xxxxxxxxxxxxxxx

-- 
1.8.1.4

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