Hi,
There seems to be a regression in BFQ-v7r4,
0002-block-introduce-the-BFQ-v7r4-I-O-sched-for-3.10.patch
bfq_init_queue has the following signature there:
static int bfq_init_queue(struct request_queue *q)
However, it is used as elevator_init_fn callback that requires a
different signature (see linux/elevator.h):
typedef int (elevator_init_fn) (struct request_queue *,
struct elevator_type *e);
The compiler complains when building the kernel 3.10.40-nrj-desktop:
block/bfq-iosched.c:3774:3: warning: initialization from incompatible
pointer type [enabled by default]
block/bfq-iosched.c:3774:3: warning: (near initialization for
‘iosched_bfq.ops.elevator_init_fn’) [enabled by default]
The problem, obviously, may lead to kernel crashes.
As far as I can see, BFQ-v7r2 does not have this problem, it defines
bfq_init_queue() correctly.
Regards,
Eugene
--
Eugene Shatokhin, ROSA
www.rosalab.com
