Revert "[PATCH] crypto: lzo: try kmalloc() before vmalloc()"

This reverts commit c8f6df362e3857ce1a9849340661024e2a1486b4.

not needed anymore as of: "mm: introduce kvmalloc()/kvfree()"
[PATCH] blk-mq: Avoid race condition with uninitialized requests

This patch should fix the bug reported in https://lkml.org/lkml/2014/9/11/249.

We have to initialize at least the atomic_flags and the cmd_flags when
allocating storage for the requests.

Otherwise blk_mq_timeout_check() might dereference uninitialized pointers when
racing with the creation of a request.

Also move the reset of cmd_flags for the initializing code to the point where a
request is freed. So we will never end up with pending flush request indicators
that might trigger dereferences of invalid pointers in blk_mq_timeout_check().

Cc: stable@vger.kernel.org
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>