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SubjectRe: [PATCH 2/5 v2] blk-mq: Support for Open-Channel SSDs
On 04/16/2015 11:10 AM, Paul Bolle wrote:
> A few things I spotted (while actually fiddling with 3/5).

Thanks. I'll fix them up.

>
> On Wed, 2015-04-15 at 14:34 +0200, Matias Bjørling wrote:
>> index f3dd028..58a8a71 100644
>> --- a/block/blk-mq.c
>> +++ b/block/blk-mq.c
>> @@ -221,6 +221,9 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
>> rq->end_io = NULL;
>> rq->end_io_data = NULL;
>> rq->next_rq = NULL;
>> +#if CONFIG_BLK_DEV_NVM
>
> I think you meant
> #ifdef CONFIG_BLK_DEV_NVM
>
>> + rq->phys_sector = 0;
>> +#endif
>>
>> ctx->rq_dispatched[rw_is_sync(rw_flags)]++;
>> }
>
>> --- /dev/null
>> +++ b/block/blk-nvm.c
>
>> +int nvm_register_target(struct nvm_target_type *tt)
>> +{
>> + int ret = 0;
>> +
>> + down_write(&_lock);
>> + if (nvm_find_target_type(tt->name))
>> + ret = -EEXIST;
>> + else
>> + list_add(&tt->list, &_targets);
>> + up_write(&_lock);
>> +
>> + return ret;
>> +}
>> +
>> +void nvm_unregister_target(struct nvm_target_type *tt)
>> +{
>> + if (!tt)
>> + return;
>> +
>> + down_write(&_lock);
>> + list_del(&tt->list);
>> + up_write(&_lock);
>> +}
>
> Trying to build rrpc.ko I saw this
> WARNING: "nvm_unregister_target" [[...]/drivers/lightnvm/rrpc.ko] undefined!
> WARNING: "nvm_register_target" [[...]/drivers/lightnvm/rrpc.ko] undefined!
>
> So I guess you need to export these two functions too.
>
>> --- a/include/linux/blkdev.h
>> +++ b/include/linux/blkdev.h
>> @@ -209,6 +209,9 @@ struct request {
>>
>> /* for bidi */
>> struct request *next_rq;
>> +#if CONFIG_BLK_DEV_NVM
>
> Again, I think
> #ifdef CONFIG_BLK_DEV_NVM
>
>> + sector_t phys_sector;
>> +#endif
>> };
>>
>> static inline unsigned short req_get_ioprio(struct request *req)
>
>
> Paul Bolle
>


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