QUEUE_FLAG_NO_SG_MERGE has been killed, so kill BLK_MQ_F_SG_MERGE too.

Cc: Christoph Hellwig <[email protected]>
Cc: Mike Snitzer <[email protected]>
Cc: Kent Overstreet <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
---
 block/blk-mq-debugfs.c       | 1 -
 drivers/block/loop.c         | 2 +-
 drivers/block/nbd.c          | 2 +-
 drivers/block/rbd.c          | 2 +-
 drivers/block/skd_main.c     | 1 -
 drivers/block/xen-blkfront.c | 2 +-
 drivers/md/dm-rq.c           | 2 +-
 drivers/mmc/core/queue.c     | 3 +--
 drivers/scsi/scsi_lib.c      | 2 +-
 include/linux/blk-mq.h       | 1 -
 10 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index e590f9495d25..cf1b83b4b737 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -243,7 +243,6 @@ static const char *const alloc_policy_name[] = {
 static const char *const hctx_flag_name[] = {
        HCTX_FLAG_NAME(SHOULD_MERGE),
        HCTX_FLAG_NAME(TAG_SHARED),
-       HCTX_FLAG_NAME(SG_MERGE),
        HCTX_FLAG_NAME(BLOCKING),
        HCTX_FLAG_NAME(NO_SCHED),
 };
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ea9debf59b22..50769942f38e 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1846,7 +1846,7 @@ static int loop_add(struct loop_device **l, int i)
        lo->tag_set.queue_depth = 128;
        lo->tag_set.numa_node = NUMA_NO_NODE;
        lo->tag_set.cmd_size = sizeof(struct loop_cmd);
-       lo->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+       lo->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
        lo->tag_set.driver_data = lo;
 
        err = blk_mq_alloc_tag_set(&lo->tag_set);
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 74a05561b620..71a66894b941 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1506,7 +1506,7 @@ static int nbd_dev_add(int index)
        nbd->tag_set.numa_node = NUMA_NO_NODE;
        nbd->tag_set.cmd_size = sizeof(struct nbd_cmd);
        nbd->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
-               BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
+               BLK_MQ_F_BLOCKING;
        nbd->tag_set.driver_data = nbd;
 
        err = blk_mq_alloc_tag_set(&nbd->tag_set);
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index fa0729c1e776..0bd0b2e7db75 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3964,7 +3964,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
        rbd_dev->tag_set.ops = &rbd_mq_ops;
        rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth;
        rbd_dev->tag_set.numa_node = NUMA_NO_NODE;
-       rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+       rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
        rbd_dev->tag_set.nr_hw_queues = 1;
        rbd_dev->tag_set.cmd_size = sizeof(struct work_struct);
 
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 87b9e7fbf062..91ba954fcbd3 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -2834,7 +2834,6 @@ static int skd_cons_disk(struct skd_device *skdev)
                skdev->sgs_per_request * sizeof(struct scatterlist);
        skdev->tag_set.numa_node = NUMA_NO_NODE;
        skdev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
-               BLK_MQ_F_SG_MERGE |
                BLK_ALLOC_POLICY_TO_MQ_FLAG(BLK_TAG_ALLOC_FIFO);
        skdev->tag_set.driver_data = skdev;
        rc = blk_mq_alloc_tag_set(&skdev->tag_set);
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 94300dbe358b..e0723c63fe6a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -973,7 +973,7 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 
sector_size,
        } else
                info->tag_set.queue_depth = BLK_RING_SIZE(info);
        info->tag_set.numa_node = NUMA_NO_NODE;
-       info->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+       info->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
        info->tag_set.cmd_size = sizeof(struct blkif_req);
        info->tag_set.driver_data = info;
 
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 6e547b8dd298..5d45adb81d0e 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -802,7 +802,7 @@ int dm_mq_init_request_queue(struct mapped_device *md, 
struct dm_table *t)
        md->tag_set->ops = &dm_mq_ops;
        md->tag_set->queue_depth = dm_get_blk_mq_queue_depth();
        md->tag_set->numa_node = md->numa_node_id;
-       md->tag_set->flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+       md->tag_set->flags = BLK_MQ_F_SHOULD_MERGE;
        md->tag_set->nr_hw_queues = dm_get_blk_mq_nr_hw_queues();
        md->tag_set->driver_data = md;
 
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 648eb6743ed5..b38ef099e19f 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -385,8 +385,7 @@ static int mmc_mq_init_queue(struct mmc_queue *mq, int 
q_depth,
        mq->tag_set.ops = mq_ops;
        mq->tag_set.queue_depth = q_depth;
        mq->tag_set.numa_node = NUMA_NO_NODE;
-       mq->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE |
-                           BLK_MQ_F_BLOCKING;
+       mq->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING;
        mq->tag_set.nr_hw_queues = 1;
        mq->tag_set.cmd_size = sizeof(struct mmc_queue_req);
        mq->tag_set.driver_data = mq;
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 41e9ac9fc138..0759ead2683d 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2306,7 +2306,7 @@ int scsi_mq_setup_tags(struct Scsi_Host *shost)
        shost->tag_set.queue_depth = shost->can_queue;
        shost->tag_set.cmd_size = cmd_size;
        shost->tag_set.numa_node = NUMA_NO_NODE;
-       shost->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+       shost->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
        shost->tag_set.flags |=
                BLK_ALLOC_POLICY_TO_MQ_FLAG(shost->hostt->tag_alloc_policy);
        shost->tag_set.driver_data = shost;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index d710e92874cc..98f3b239c561 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -179,7 +179,6 @@ struct blk_mq_ops {
 enum {
        BLK_MQ_F_SHOULD_MERGE   = 1 << 0,
        BLK_MQ_F_TAG_SHARED     = 1 << 1,
-       BLK_MQ_F_SG_MERGE       = 1 << 2,
        BLK_MQ_F_BLOCKING       = 1 << 5,
        BLK_MQ_F_NO_SCHED       = 1 << 6,
        BLK_MQ_F_ALLOC_POLICY_START_BIT = 8,
-- 
2.9.5

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