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| author | Mike Snitzer <snitzer@redhat.com> | 2012-12-21 20:23:37 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-12-21 20:23:37 +0000 |
| commit | 23508a96cd2e857d57044a2ed7d305f2d9daf441 (patch) | |
| tree | 149ead46c45a0fdd159fb32a6bfb6439eae3d652 /drivers/md/dm-linear.c | |
| parent | d54eaa5a0fde0a202e4e91f200f818edcef15bee (diff) | |
| download | talos-op-linux-23508a96cd2e857d57044a2ed7d305f2d9daf441.tar.gz talos-op-linux-23508a96cd2e857d57044a2ed7d305f2d9daf441.zip | |
dm: add WRITE SAME support
WRITE SAME bios have a payload that contain a single page. When
cloning WRITE SAME bios DM has no need to modify the bi_io_vec
attributes (and doing so would be detrimental). DM need only alter the
start and end of the WRITE SAME bio accordingly.
Rather than duplicate __clone_and_map_discard, factor out a common
function that is also used by __clone_and_map_write_same.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-linear.c')
0 files changed, 0 insertions, 0 deletions
