torture/ioctl: rework and reduce pattern helper IO sizes

check_pattern() currently attempts to read all data in one go. Fix it to
use a 64K maximum IO size so that it works against Windows Server 2008.

Additionally, rework write_pattern() so that it only allocates a buffer
for the largest IO size (now 64K), rather than for the full write
length.

Finally, assert that callers are correctly performing pattern IO in
8-byte increments - copy_chunk_tiny was not, so fix it.

Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

0 files changed, 0 insertions, 0 deletions