AcoSail/kernel_optimize_test
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block: Add fallthrough markers to switch statements

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This patch suppresses gcc 7 warnings about falling through in switch
statements when building with W=1. From the gcc documentation: The
-Wimplicit-fallthrough=3 warning is enabled by -Wextra. See also
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/Warning-Options.html.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2017-06-21 09:40:11 -07:00 committed by Jens Axboe
parent 0e9350de2e
commit e29387ebd8
3 changed files with 4 additions and 1 deletions
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1
block/badblocks.c
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@ -533,6 +533,7 @@ ssize_t badblocks_store(struct badblocks *bb, const char *page, size_t len,
case 3: case 3:
if (newline != '\n') if (newline != '\n')
return -EINVAL; return -EINVAL;
/* fall through */
case 2: case 2:
if (length <= 0) if (length <= 0)
return -EINVAL; return -EINVAL;

1
block/elevator.c
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@ -681,6 +681,7 @@ void __elv_add_request(struct request_queue *q, struct request *rq, int where)
*/ */
if (elv_attempt_insert_merge(q, rq)) if (elv_attempt_insert_merge(q, rq))
break; break;
/* fall through */
case ELEVATOR_INSERT_SORT: case ELEVATOR_INSERT_SORT:
BUG_ON(blk_rq_is_passthrough(rq)); BUG_ON(blk_rq_is_passthrough(rq));
rq->rq_flags |= RQF_SORTED; rq->rq_flags |= RQF_SORTED;

3
block/ioprio.c
View File

@ -75,7 +75,8 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
case IOPRIO_CLASS_RT: case IOPRIO_CLASS_RT:
if (!capable(CAP_SYS_ADMIN)) if (!capable(CAP_SYS_ADMIN))
return -EPERM; return -EPERM;
/* fall through, rt has prio field too */ /* fall through */
/* rt has prio field too */
case IOPRIO_CLASS_BE: case IOPRIO_CLASS_BE:
if (data >= IOPRIO_BE_NR || data < 0) if (data >= IOPRIO_BE_NR || data < 0)
return -EINVAL; return -EINVAL;