tree 82d66c533fb992e6f9f2f7dcc10f8ec0d1057314
parent 6edf7a89260859c5e72861dc4e6e169495f076c8
author Dmitry Kasatkin <d.kasatkin@samsung.com> 1399377267 +0300
committer Mimi Zohar <zohar@linux.vnet.ibm.com> 1405604111 -0400

ima: provide double buffering for hash calculation

The asynchronous hash API allows initiating a hash calculation and
then performing other tasks, while waiting for the hash calculation
to complete.

This patch introduces usage of double buffering for simultaneous
hashing and reading of the next chunk of data from storage.

Changes in v3:
- better comments

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>