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Commit f89ca166 authored by Jens Axboe's avatar Jens Axboe
Browse files

Merge branch 'for-3.16/core' into for-3.16/drivers 



Pulled in for the blk_mq_tag_to_rq() change, which impacts
mtip32xx.

Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parents 879466e6 22302375

block/blk-core.c

+0 −5
Original line number Diff line number Diff line
@@ -2957,8 +2957,6 @@ int kblockd_schedule_delayed_work_on(int cpu, struct delayed_work *dwork, 
}

EXPORT_SYMBOL(kblockd_schedule_delayed_work_on);



#define PLUG_MAGIC	0x91827364



/**

 * blk_start_plug - initialize blk_plug and track it inside the task_struct

 * @plug:	The &struct blk_plug that needs to be initialized
@@ -2977,7 +2975,6 @@ void blk_start_plug(struct blk_plug *plug) 
{

	struct task_struct *tsk = current;



	plug->magic = PLUG_MAGIC;

	INIT_LIST_HEAD(&plug->list);

	INIT_LIST_HEAD(&plug->mq_list);

	INIT_LIST_HEAD(&plug->cb_list);
@@ -3074,8 +3071,6 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule) 
	LIST_HEAD(list);

	unsigned int depth;



	BUG_ON(plug->magic != PLUG_MAGIC);



	flush_plug_callbacks(plug, from_schedule);



	if (!list_empty(&plug->mq_list))

block/blk-flush.c

+3 −1
Original line number Diff line number Diff line
@@ -223,8 +223,10 @@ static void flush_end_io(struct request *flush_rq, int error) 
	struct request *rq, *n;

	unsigned long flags = 0;



	if (q->mq_ops)

	if (q->mq_ops) {

		spin_lock_irqsave(&q->mq_flush_lock, flags);

		q->flush_rq->cmd_flags = 0;

	}



	running = &q->flush_queue[q->flush_running_idx];

	BUG_ON(q->flush_pending_idx == q->flush_running_idx);

block/blk-merge.c

+21 −7
Original line number Diff line number Diff line
@@ -13,7 +13,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, 
					     struct bio *bio)

{

	struct bio_vec bv, bvprv = { NULL };

	int cluster, high, highprv = 1;

	int cluster, high, highprv = 1, no_sg_merge;

	unsigned int seg_size, nr_phys_segs;

	struct bio *fbio, *bbio;

	struct bvec_iter iter;
@@ -35,12 +35,21 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, 
	cluster = blk_queue_cluster(q);

	seg_size = 0;

	nr_phys_segs = 0;

	no_sg_merge = test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags);

	high = 0;

	for_each_bio(bio) {

		bio_for_each_segment(bv, bio, iter) {

			/*

			 * If SG merging is disabled, each bio vector is

			 * a segment

			 */

			if (no_sg_merge)

				goto new_segment;



			/*

			 * the trick here is making sure that a high page is

			 * never considered part of another segment, since that

			 * might change with the bounce page.

			 * never considered part of another segment, since

			 * that might change with the bounce page.

			 */

			high = page_to_pfn(bv.bv_page) > queue_bounce_pfn(q);

			if (!high && !highprv && cluster) {
@@ -84,11 +93,16 @@ void blk_recalc_rq_segments(struct request *rq) 


void blk_recount_segments(struct request_queue *q, struct bio *bio)

{

	if (test_bit(QUEUE_FLAG_NO_SG_MERGE, &q->queue_flags))

		bio->bi_phys_segments = bio->bi_vcnt;

	else {

		struct bio *nxt = bio->bi_next;



		bio->bi_next = NULL;

		bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio);

		bio->bi_next = nxt;

	}



	bio->bi_flags |= (1 << BIO_SEG_VALID);

}

EXPORT_SYMBOL(blk_recount_segments);

block/blk-mq.c

+21 −20
Original line number Diff line number Diff line
@@ -199,19 +199,12 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx, 
	rq->q = q;

	rq->mq_ctx = ctx;

	rq->cmd_flags |= rw_flags;

	rq->cmd_type = 0;

	/* do not touch atomic flags, it needs atomic ops against the timer */

	rq->cpu = -1;

	rq->__data_len = 0;

	rq->__sector = (sector_t) -1;

	rq->bio = NULL;

	rq->biotail = NULL;

	INIT_HLIST_NODE(&rq->hash);

	RB_CLEAR_NODE(&rq->rb_node);

	memset(&rq->flush, 0, max(sizeof(rq->flush), sizeof(rq->elv)));

	rq->rq_disk = NULL;

	rq->part = NULL;

	rq->start_time = jiffies;

#ifdef CONFIG_BLK_CGROUP

	rq->rl = NULL;

	set_start_time_ns(rq);
@@ -221,23 +214,16 @@ static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx, 
#if defined(CONFIG_BLK_DEV_INTEGRITY)

	rq->nr_integrity_segments = 0;

#endif

	rq->ioprio = 0;

	rq->special = NULL;

	/* tag was already set */

	rq->errors = 0;

	memset(rq->__cmd, 0, sizeof(rq->__cmd));

	rq->cmd = rq->__cmd;

	rq->cmd_len = BLK_MAX_CDB;



	rq->extra_len = 0;

	rq->sense_len = 0;

	rq->resid_len = 0;

	rq->sense = NULL;



	rq->deadline = 0;

	INIT_LIST_HEAD(&rq->timeout_list);

	rq->timeout = 0;

	rq->retries = 0;

	rq->end_io = NULL;

	rq->end_io_data = NULL;

	rq->next_rq = NULL;
@@ -449,7 +435,9 @@ static void blk_mq_start_request(struct request *rq, bool last) 
	 * complete. So be sure to clear complete again when we start

	 * the request, otherwise we'll ignore the completion event.

	 */

	if (!test_bit(REQ_ATOM_STARTED, &rq->atomic_flags))

		set_bit(REQ_ATOM_STARTED, &rq->atomic_flags);

	if (test_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags))

		clear_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags);



	if (q->dma_drain_size && blk_rq_bytes(rq)) {
@@ -553,9 +541,15 @@ void blk_mq_kick_requeue_list(struct request_queue *q) 
}

EXPORT_SYMBOL(blk_mq_kick_requeue_list);



struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag)

struct request *blk_mq_tag_to_rq(struct blk_mq_hw_ctx *hctx, unsigned int tag)

{

	return tags->rqs[tag];

	struct request_queue *q = hctx->queue;



	if ((q->flush_rq->cmd_flags & REQ_FLUSH_SEQ) &&

	    q->flush_rq->tag == tag)

		return q->flush_rq;



	return hctx->tags->rqs[tag];

}

EXPORT_SYMBOL(blk_mq_tag_to_rq);
@@ -584,7 +578,7 @@ static void blk_mq_timeout_check(void *__data, unsigned long *free_tags) 
		if (tag >= hctx->tags->nr_tags)

			break;



		rq = blk_mq_tag_to_rq(hctx->tags, tag++);

		rq = blk_mq_tag_to_rq(hctx, tag++);

		if (rq->q != hctx->queue)

			continue;

		if (!test_bit(REQ_ATOM_STARTED, &rq->atomic_flags))
@@ -1112,8 +1106,12 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule) 
static void blk_mq_bio_to_request(struct request *rq, struct bio *bio)

{

	init_request_from_bio(rq, bio);



	if (blk_do_io_stat(rq)) {

		rq->start_time = jiffies;

		blk_account_io_start(rq, 1);

	}

}



static inline bool blk_mq_merge_queue_io(struct blk_mq_hw_ctx *hctx,

					 struct blk_mq_ctx *ctx,
@@ -1829,6 +1827,9 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) 
	q->mq_ops = set->ops;

	q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT;



	if (!(set->flags & BLK_MQ_F_SG_MERGE))

		q->queue_flags |= 1 << QUEUE_FLAG_NO_SG_MERGE;



	q->sg_reserved_size = INT_MAX;



	INIT_WORK(&q->requeue_work, blk_mq_requeue_work);

block/scsi_ioctl.c

+0 −4
Original line number Diff line number Diff line
@@ -205,10 +205,6 @@ int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm) 
	if (capable(CAP_SYS_RAWIO))

		return 0;



	/* if there's no filter set, assume we're filtering everything out */

	if (!filter)

		return -EPERM;



	/* Anybody who can open the device can do a read-safe command */

	if (test_bit(cmd[0], filter->read_ok))

		return 0;