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blk-mq: update ->init_request and ->exit_request prototypes 

Remove the request_idx parameter, which can't be used safely now that we
support I/O schedulers with blk-mq.  Except for a superflous check in
mtip32xx it was unused anyway.

Also pass the tag_set instead of just the driver data - this allows drivers
to avoid some code duplication in a follow on cleanup.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Christoph Hellwig 2017-05-01 10:19:08 -06:00 committed by Jens Axboe
parent a800ce8ba5
commit d6296d39e9
14 changed files with 74 additions and 99 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
block/blk-mq.c
View File

@ -1655,8 +1655,7 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
if (!rq)
continue;
set->ops->exit_request(set->driver_data, rq,
hctx_idx, i);
set->ops->exit_request(set, rq, hctx_idx);
tags->static_rqs[i] = NULL;
}
}
@ -1787,8 +1786,7 @@ int blk_mq_alloc_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
tags->static_rqs[i] = rq;
if (set->ops->init_request) {
if (set->ops->init_request(set->driver_data,
rq, hctx_idx, i,
if (set->ops->init_request(set, rq, hctx_idx,
node)) {
tags->static_rqs[i] = NULL;
goto fail;
@ -1849,14 +1847,10 @@ static void blk_mq_exit_hctx(struct request_queue *q,
struct blk_mq_tag_set *set,
struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
{
unsigned flush_start_tag = set->queue_depth;
blk_mq_tag_idle(hctx);
if (set->ops->exit_request)
set->ops->exit_request(set->driver_data,
hctx->fq->flush_rq, hctx_idx,
flush_start_tag + hctx_idx);
set->ops->exit_request(set, hctx->fq->flush_rq, hctx_idx);
blk_mq_sched_exit_hctx(q, hctx, hctx_idx);
@ -1889,7 +1883,6 @@ static int blk_mq_init_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx, unsigned hctx_idx)
{
int node;
unsigned flush_start_tag = set->queue_depth;
node = hctx->numa_node;
if (node == NUMA_NO_NODE)
@ -1933,9 +1926,8 @@ static int blk_mq_init_hctx(struct request_queue *q,
goto sched_exit_hctx;
if (set->ops->init_request &&
set->ops->init_request(set->driver_data,
hctx->fq->flush_rq, hctx_idx,
flush_start_tag + hctx_idx, node))
set->ops->init_request(set, hctx->fq->flush_rq, hctx_idx,
node))
goto free_fq;
if (hctx->flags & BLK_MQ_F_BLOCKING)

5
drivers/block/loop.c
View File

@ -1697,9 +1697,8 @@ static void loop_queue_work(struct kthread_work *work)
loop_handle_cmd(cmd);
}
static int loop_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int loop_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct loop_cmd *cmd = blk_mq_rq_to_pdu(rq);

20
drivers/block/mtip32xx/mtip32xx.c
View File

@ -3818,10 +3818,10 @@ static int mtip_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_MQ_RQ_QUEUE_ERROR;
}
static void mtip_free_cmd(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx)
static void mtip_free_cmd(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx)
{
struct driver_data *dd = data;
struct driver_data *dd = set->driver_data;
struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq);
if (!cmd->command)
@ -3831,20 +3831,12 @@ static void mtip_free_cmd(void *data, struct request *rq,
cmd->command, cmd->command_dma);
}
static int mtip_init_cmd(void *data, struct request *rq, unsigned int hctx_idx,
unsigned int request_idx, unsigned int numa_node)
static int mtip_init_cmd(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct driver_data *dd = data;
struct driver_data *dd = set->driver_data;
struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq);
/*
* For flush requests, request_idx starts at the end of the
* tag space. Since we don't support FLUSH/FUA, simply return
* 0 as there's nothing to be done.
*/
if (request_idx >= MTIP_MAX_COMMAND_SLOTS)
return 0;
cmd->command = dmam_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ,
&cmd->command_dma, GFP_KERNEL);
if (!cmd->command)

7
drivers/block/nbd.c
View File

@ -1396,12 +1396,11 @@ static void nbd_dbg_close(void)
#endif
static int nbd_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int nbd_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct nbd_cmd *cmd = blk_mq_rq_to_pdu(rq);
cmd->nbd = data;
cmd->nbd = set->driver_data;
return 0;
}

5
drivers/block/rbd.c
View File

@ -4307,9 +4307,8 @@ out:
return ret;
}
static int rbd_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int rbd_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct work_struct *work = blk_mq_rq_to_pdu(rq);

7
drivers/block/virtio_blk.c
View File

@ -573,11 +573,10 @@ static const struct device_attribute dev_attr_cache_type_rw =
__ATTR(cache_type, S_IRUGO|S_IWUSR,
virtblk_cache_type_show, virtblk_cache_type_store);
static int virtblk_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int virtblk_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct virtio_blk *vblk = data;
struct virtio_blk *vblk = set->driver_data;
struct virtblk_req *vbr = blk_mq_rq_to_pdu(rq);
#ifdef CONFIG_VIRTIO_BLK_SCSI

7
drivers/md/dm-rq.c
View File

@ -719,11 +719,10 @@ int dm_old_init_request_queue(struct mapped_device *md, struct dm_table *t)
return 0;
}
static int dm_mq_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int dm_mq_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
return __dm_rq_init_rq(data, rq);
return __dm_rq_init_rq(set->driver_data, rq);
}
static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx,

7
drivers/mtd/ubi/block.c
View File

@ -334,10 +334,9 @@ static int ubiblock_queue_rq(struct blk_mq_hw_ctx *hctx,
}
static int ubiblock_init_request(void *data, struct request *req,
unsigned int hctx_idx,
unsigned int request_idx,
unsigned int numa_node)
static int ubiblock_init_request(struct blk_mq_tag_set *set,
struct request *req, unsigned int hctx_idx,
unsigned int numa_node)
{
struct ubiblock_pdu *pdu = blk_mq_rq_to_pdu(req);

20
drivers/nvme/host/fc.c
View File

@ -1172,12 +1172,12 @@ __nvme_fc_exit_request(struct nvme_fc_ctrl *ctrl,
}
static void
nvme_fc_exit_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx)
nvme_fc_exit_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx)
{
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
return __nvme_fc_exit_request(data, op);
return __nvme_fc_exit_request(set->driver_data, op);
}
static int
@ -1434,11 +1434,10 @@ out_on_error:
}
static int
nvme_fc_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
nvme_fc_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct nvme_fc_ctrl *ctrl = data;
struct nvme_fc_ctrl *ctrl = set->driver_data;
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_queue *queue = &ctrl->queues[hctx_idx+1];
@ -1446,11 +1445,10 @@ nvme_fc_init_request(void *data, struct request *rq,
}
static int
nvme_fc_init_admin_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
nvme_fc_init_admin_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct nvme_fc_ctrl *ctrl = data;
struct nvme_fc_ctrl *ctrl = set->driver_data;
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_queue *queue = &ctrl->queues[0];

15
drivers/nvme/host/pci.c
View File

@ -356,11 +356,11 @@ static void nvme_admin_exit_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_i
nvmeq->tags = NULL;
}
static int nvme_admin_init_request(void *data, struct request *req,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_admin_init_request(struct blk_mq_tag_set *set,
struct request *req, unsigned int hctx_idx,
unsigned int numa_node)
{
struct nvme_dev *dev = data;
struct nvme_dev *dev = set->driver_data;
struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
struct nvme_queue *nvmeq = dev->queues[0];
@ -383,11 +383,10 @@ static int nvme_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
return 0;
}
static int nvme_init_request(void *data, struct request *req,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_init_request(struct blk_mq_tag_set *set, struct request *req,
unsigned int hctx_idx, unsigned int numa_node)
{
struct nvme_dev *dev = data;
struct nvme_dev *dev = set->driver_data;
struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
struct nvme_queue *nvmeq = dev->queues[hctx_idx + 1];

28
drivers/nvme/host/rdma.c
View File

@ -315,16 +315,16 @@ static void __nvme_rdma_exit_request(struct nvme_rdma_ctrl *ctrl,
DMA_TO_DEVICE);
}
static void nvme_rdma_exit_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx)
static void nvme_rdma_exit_request(struct blk_mq_tag_set *set,
struct request *rq, unsigned int hctx_idx)
{
return __nvme_rdma_exit_request(data, rq, hctx_idx + 1);
return __nvme_rdma_exit_request(set->driver_data, rq, hctx_idx + 1);
}
static void nvme_rdma_exit_admin_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx)
static void nvme_rdma_exit_admin_request(struct blk_mq_tag_set *set,
struct request *rq, unsigned int hctx_idx)
{
return __nvme_rdma_exit_request(data, rq, 0);
return __nvme_rdma_exit_request(set->driver_data, rq, 0);
}
static int __nvme_rdma_init_request(struct nvme_rdma_ctrl *ctrl,
@ -358,18 +358,18 @@ out_free_qe:
return -ENOMEM;
}
static int nvme_rdma_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_rdma_init_request(struct blk_mq_tag_set *set,
struct request *rq, unsigned int hctx_idx,
unsigned int numa_node)
{
return __nvme_rdma_init_request(data, rq, hctx_idx + 1);
return __nvme_rdma_init_request(set->driver_data, rq, hctx_idx + 1);
}
static int nvme_rdma_init_admin_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_rdma_init_admin_request(struct blk_mq_tag_set *set,
struct request *rq, unsigned int hctx_idx,
unsigned int numa_node)
{
return __nvme_rdma_init_request(data, rq, 0);
return __nvme_rdma_init_request(set->driver_data, rq, 0);
}
static int nvme_rdma_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,

17
drivers/nvme/target/loop.c
View File

@ -230,18 +230,19 @@ static int nvme_loop_init_iod(struct nvme_loop_ctrl *ctrl,
return 0;
}
static int nvme_loop_init_request(void *data, struct request *req,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_loop_init_request(struct blk_mq_tag_set *set,
struct request *req, unsigned int hctx_idx,
unsigned int numa_node)
{
return nvme_loop_init_iod(data, blk_mq_rq_to_pdu(req), hctx_idx + 1);
return nvme_loop_init_iod(set->driver_data, blk_mq_rq_to_pdu(req),
hctx_idx + 1);
}
static int nvme_loop_init_admin_request(void *data, struct request *req,
unsigned int hctx_idx, unsigned int rq_idx,
unsigned int numa_node)
static int nvme_loop_init_admin_request(struct blk_mq_tag_set *set,
struct request *req, unsigned int hctx_idx,
unsigned int numa_node)
{
return nvme_loop_init_iod(data, blk_mq_rq_to_pdu(req), 0);
return nvme_loop_init_iod(set->driver_data, blk_mq_rq_to_pdu(req), 0);
}
static int nvme_loop_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,

13
drivers/scsi/scsi_lib.c
View File

@ -1999,11 +1999,10 @@ static enum blk_eh_timer_return scsi_timeout(struct request *req,
return scsi_times_out(req);
}
static int scsi_init_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx,
unsigned int numa_node)
static int scsi_init_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx, unsigned int numa_node)
{
struct Scsi_Host *shost = data;
struct Scsi_Host *shost = set->driver_data;
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
cmd->sense_buffer =
@ -2014,10 +2013,10 @@ static int scsi_init_request(void *data, struct request *rq,
return 0;
}
static void scsi_exit_request(void *data, struct request *rq,
unsigned int hctx_idx, unsigned int request_idx)
static void scsi_exit_request(struct blk_mq_tag_set *set, struct request *rq,
unsigned int hctx_idx)
{
struct Scsi_Host *shost = data;
struct Scsi_Host *shost = set->driver_data;
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
scsi_free_sense_buffer(shost, cmd->sense_buffer);

4
include/linux/blk-mq.h
View File

@ -86,9 +86,9 @@ typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data
typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool);
typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int);
typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int);
typedef int (init_request_fn)(void *, struct request *, unsigned int,
typedef int (init_request_fn)(struct blk_mq_tag_set *set, struct request *,
unsigned int, unsigned int);
typedef void (exit_request_fn)(void *, struct request *, unsigned int,
typedef void (exit_request_fn)(struct blk_mq_tag_set *set, struct request *,
unsigned int);
typedef int (reinit_request_fn)(void *, struct request *);